| Version |
2.5 |
| Creation Date |
2005-11-16 15:48:42 |
| Update Date |
2009-05-05 20:57:45 |
| Accession Number |
HMDB00186 |
| Secondary Accession Numbers |
HMDB05761 |
| Common Name |
Alpha-Lactose |
| Description |
alpha-Lactose is the major sugar present in milk and the main source of energy supplied to the newborn mammalian in its mother's milk. Lactose is also an important osmotic regulator of lactation. It is digested by the intestinal lactase (EC 3.2.1.108), an enzyme expressed in newborns. Its activity declines following weaning. As a result, adult mammals are normally lactose-intolerant and more than 75% of the human adult population suffers from lactase deficiency. Lactase deficiency is present in up to 80 percent of blacks and Latinos, and up to 100 percent of American Indians and Asians. Persons with lactose intolerance are unable to digest significant amounts of lactose. Common symptoms include abdominal pain and bloating, excessive flatus, and watery stool following the ingestion of foods containing lactose. A sizable number of adults believe they are lactose intolerant but do not actually have impaired lactose digestion, and some persons with lactase deficiency can tolerate moderate amounts of ingested lactose. A diagnosis of lactose intolerance can usually be made with a careful history supported by dietary manipulation. If necessary, diagnosis can be confirmed by using a breath hydrogen or lactose tolerance test. These mostly uncomfortable symptoms of lactose maldigestion are blamed for a variably dairy consumption. There is, however, emerging evidence that certain lactic acid-producing bacteria, which selectively consume prebiotics, may be beneficial against some lower intestinal diseases. Lactose maldigestion and lactose should perhaps be re-evaluated as a potential provider of such a prebiotic. Treatment consists primarily of avoiding lactose-containing foods. Lactase enzyme supplements may be helpful. The degree of lactose malabsorption varies greatly among patients with lactose intolerance, but most of them can ingest up to 350 mL of milk daily without symptoms. Lactose-intolerant patients must ensure adequate calcium intake. (PMID: 13130292, 12216958, 12197838, 12018807) |
| Synonyms |
- (+)-lactose
- 1-beta-D-Galactopyranosyl-4-alpha-D-glucopyranose
- 4-O-Hexopyranosylhexose
- Aletobiose
- Anhydrous lactose
- Lactin
- Lactobiose
- Lactose
- Milk sugar
- Osmolactan
- Saccharum lactin
- 1-beta-delta-Galactopyranosyl-4-alpha-delta-glucopyranose
- a-Lactose
- Dilactose
- Fast-Flo Lactose
- Flowlac 100
- Galactinum
- Granulac 140M
- Lactin (carbohydrate)
- Lactohale 300
- Lactose Fast-flo
- Lactose anhydride
- Pharmatosa DCL 21
- Pharmatose 21
- Pharmatose 325M
- Pharmatose DCL 15
- Prismalac
- Respitose ML 003
- Respitose SV 003
- Sachelac
- Sorbalac 400
- Sorbolac 400
- Spherolac
- Super-Tab
- Tablettose
- Tablettose 70
- Tablettose 80
- Zeparox EP
- Glc-(4-1)Gal
- alpha-Lactose
|
| Chemical IUPAC Name |
(2R,3S,4S,5R,6S)-2-(hydroxymethyl)-6-[(2R,3R,4S,5R,6S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-oxane-3,4,5-triol |
| Chemical Formula |
C12H22O11 |
| Chemical Structure |
 |
| Chemical Taxonomy |
| Kingdom |
|
| Super Class |
- Carbohydrates and Carbohydrate conjugates
|
| Class |
|
| Sub Class |
|
| Family |
|
| Species |
- hemiacetal
- acetal
- primary alcohol
- secondary alcohol
- 1,2-diol
- heterocyclic compound
|
| Biofunction |
- Component of Galactose metabolism
- Component of Glycerolipid metabolism
- Component of Glycosphingolipid metabolism
- Component of Keratan sulfate biosynthesis
- Component of N-Glycan biosynthesis
|
| Application |
| — |
| Source |
|
|
| Average Molecular Weight |
342.297 |
| Monoisotopic Molecular Weight |
342.116211 |
| Isomeric SMILES |
OC[C@H]1O[C@@H](O[C@@H]2[C@@H](CO)O[C@H](O)[C@H](O)[C@H]2O)[C@H](O)[C@@H](O)[C@H]1O |
| Canonical SMILES |
OCC1OC(OC2C(CO)OC(O)C(O)C2O)C(O)C(O)C1O |
| KEGG Compound ID |
C00243  |
| BioCyc ID |
LACTOSE  |
| BiGG ID |
34366  |
| Wikipedia Link |
Lactose  |
| NuGOwiki Link |
HMDB00186  |
| Metagene Link |
HMDB00186  |
| METLIN ID |
267  |
| PubChem Compound |
84571  |
| PubChem Substance |
10220749  |
| ChEBI ID |
36219  |
| CAS Registry Number |
63-42-3 |
| InChI Identifier |
InChI=1/C12H22O11/c13-1-3-5(15)6(16)9(19)12(22-3)23-10-4(2-14)21-11(20)8(18)7(10)17/h3-20H,1-2H2/t3-,4-,5+,6+,7-,8-,9-,10-,11+,12+/m1/s1 |
| Synthesis Reference |
Ruffing, Anne; Mao, Zichao; Ruizhen Chen, Rachel. Metabolic engineering of Agrobacterium sp. for UDP-galactose regeneration and oligosaccharide synthesis. Metabolic Engineering (2006), 8(5), 465-473. |
| Melting Point (Experimental) |
201-202 oC |
| Experimental Water Solubility |
195 mg/mL at 20 oC [YALKOWSKY,SH & DANNENFELSER,RM (1992)]
Source: PhysProp
|
| Predicted Water Solubility |
586.0 mg/mL [Predicted by ALOGPS]
Calculated using ALOGPS
|
| Physiological Charge |
0 |
| State |
Solid |
| Experimental LogP/Hydrophobicity |
Not Available
Source: PhysProp
|
| Predicted LogP/Hydrophobicity |
-5.03 [MEYLAN,WM & HOWARD,PH (1995)]; -4.3 [Predicted by PubChem via XLOGP]; -3.01 [Predicted by ALOGPS]
Calculated using ALOGPS
|
| Material Safety Data Sheet (MSDS) |
|
| MOL File |
Show |
| SDF File |
Show |
| PDB File |
Show |
| 2D Structure |
|
| 3D Structure |
|
| Experimental PDB ID |
1DLL  |
| Experimental PDB File |
Show |
| Experimental PDB Structure |
|
| Experimental 1H NMR Spectrum |
Download Spectrum Download FID (Varian) Show Experimental Conditions  |
| Experimental 13C NMR Spectrum |
Download Spectrum Download FID (Bruker) Show Experimental Conditions  |
| Experimental 13C HSQC Spectrum |
Download Spectrum Download FID (Bruker) Show Experimental Conditions  |
| Predicted 1H NMR Spectrum |
Show Image Show Peaklist
|
| Predicted 13C NMR Spectrum |
Show Image Show Peaklist
|
| Mass Spectrum |
|
| Simplified TOCSY Spectrum |
Show Image Show Peaklist |
| BMRB Spectrum |
Show Image Show Peaklist |
| Cellular Location |
- Cytoplasm
- Extracellular
- golgi apparatus
- lysosome
|
| Biofluid Location |
|
| Tissue Location |
| Tissue |
References |
| Bladder |
— |
| Gut |
— |
| Intestine |
— |
| Muscle |
— |
| Platelet |
— |
| Skin |
— |
| Spleen |
— |
|
| Concentrations (Normal) |
| Biofluid |
Urine |
| Value |
6.08 +/- 6.07 umol/mmol creatinine |
| Age |
Infant:0-1 yr old |
| Sex |
Both |
| Patient information |
Normal |
| Comments |
Not Available |
| References |
- Shoemaker JD, Elliott WH: Automated screening of urine samples for carbohydrates, organic and amino acids after treatment with urease. J Chromatogr. 1991 Jan 2;562(1-2):125-38. [PubMed
]
|
| Biofluid |
Urine |
| Value |
30.0 (13.0-49.0) umol/mmol creatinine |
| Age |
Infant:0-1 yr old |
| Sex |
Both |
| Patient information |
Normal |
| Comments |
Not Available |
| References |
- Geigy Scientific Tables, 8th Rev edition, pp. 130. Edited by C. Lentner, West Cadwell, N.J.: Medical education Div., Ciba-Geigy Corp. Basel, Switzerland c1981-1992.
|
| Biofluid |
Urine |
| Value |
1.45 (0.63-3.45) umol/mmol creatinine |
| Age |
Adult:>18 yrs old |
| Sex |
Both |
| Patient information |
Normal |
| Comments |
Not Available |
| References |
- Geigy Scientific Tables, 8th Rev edition, pp. 130. Edited by C. Lentner, West Cadwell, N.J.: Medical education Div., Ciba-Geigy Corp. Basel, Switzerland c1981-1992.
|
|
| Concentrations (Abnormal) |
Not Available |
| Associated Disorders |
Not Available |
| OMIM ID |
Not Available |
| Pathways |
|
| General References |
- Jung SK, Fujimoto D: A novel beta-galactoside-binding lectin in adult rat kidney. J Biochem (Tokyo). 1994 Sep;116(3):547-53. [PubMed
]
- Oozeer R, Furet JP, Goupil-Feuillerat N, Anba J, Mengaud J, Corthier G: Differential activities of four Lactobacillus casei promoters during bacterial transit through the gastrointestinal tracts of human-microbiota-associated mice. Appl Environ Microbiol. 2005 Mar;71(3):1356-63. [PubMed
]
- Dimopoulos MA, Anagnostopoulos A: Thalidomide in relapsed/refractory multiple myeloma: pivotal trials conducted outside the United States. Semin Hematol. 2003 Oct;40(4 Suppl 4):8-16. [PubMed
]
- Muthusamy A, Erickson DR, Sheykhnazari M, Bhavanandan VP: Enhanced binding of modified pentosan polysulfate and heparin to bladder--a strategy for improved treatment of interstitial cystitis. Urology. 2006 Jan;67(1):209-13. [PubMed
]
- Johnson JD, Simoons FJ, Hurwitz R, Grange A, Mitchell CH, Sinatra FR, Sunshine P, Robertson WV, Bennett PH, Kretchmer N: Lactose malabsorption among the Pima indians of Arizona. Gastroenterology. 1977 Dec;73(6):1299-304. [PubMed
]
- Lustenberger RW: [A 23-year old patient with chronic diarrhea. Celiac disease and lactose intolerance] Schweiz Rundsch Med Prax. 2005 Feb 2;94(5):163-4. [PubMed
]
- Sharma A, DiCioccio RA, Allen HJ: Identification and synthesis of a novel 15 kDa beta-galactoside-binding lectin in human leukocytes. Glycobiology. 1992 Aug;2(4):285-92. [PubMed
]
- Rana SV, Bhasin DK, Vinayak VK: Lactose hydrogen breath test in Giardia lamblia-positive patients. Dig Dis Sci. 2005 Feb;50(2):259-61. [PubMed
]
- Mitchell JD, Brand J, Halbisch J: Weight-gain inhibition by lactose in Australian Aboriginal children. A controlled trial of normal and lactose hydrolysed milk. Lancet. 1977 Mar 5;1(8010):500-2. [PubMed
]
- Soupene E, van Heeswijk WC, Plumbridge J, Stewart V, Bertenthal D, Lee H, Prasad G, Paliy O, Charernnoppakul P, Kustu S: Physiological studies of Escherichia coli strain MG1655: growth defects and apparent cross-regulation of gene expression. J Bacteriol. 2003 Sep;185(18):5611-26. [PubMed
]
- Yeoh E, Horowitz M, Russo A, Muecke T, Robb T, Chatterton B: The effects of abdominal irradiation for seminoma of the testis on gastrointestinal function. J Gastroenterol Hepatol. 1995 Mar-Apr;10(2):125-30. [PubMed
]
- Bondesson E, Bengtsson T, Borgstrom L, Nilsson LE, Norrgren K, Olsson B, Svensson M, Wollmer P: Dose delivery late in the breath can increase dry powder aerosol penetration into the lungs. J Aerosol Med. 2005 Spring;18(1):23-33. [PubMed
]
- Roberson CM: Lactose intolerance. Ala Nurse. 2004 Dec-2005 Feb;31(4):23-4; quiz 24. [PubMed
]
- Kim KI, Lee WS, Benevenga NJ: Feeding diets containing high levels of milk products or cellulose decrease urease activity and ammonia production in rat intestine. J Nutr. 1998 Jul;128(7):1186-91. [PubMed
]
- Gunther S, Patterson RE, Kristal AR, Stratton KL, White E: Demographic and health-related correlates of herbal and specialty supplement use. J Am Diet Assoc. 2004 Jan;104(1):27-34. [PubMed
]
- Wikipedia

|
| Metabolic Enzymes |
- Lactase-phlorizin hydrolase precursor
- Alpha-lactalbumin precursor
- Beta-1,4-galactosyltransferase 1
- Beta-galactosidase precursor
- cDNA, FLJ93218, Homo sapiens UDP-Gal:betaGlcNAc beta 1,4- galactosyltransferase,polypeptide 1 (B4GALT1), mRNA (UDP-Gal:betaGlcNAc beta 1,4-galactosyltransferase, polypeptide 1, isoform CRA_a)
- cDNA FLJ38554 fis, clone HCHON2002496, highly similar to Beta-1,4-galactosyltransferase 2 (EC 2.4.1.-)
|
|
Enzyme 1
[top]
|
| Enzyme 1 ID |
5601 |
| Enzyme 1 Name |
Lactase-phlorizin hydrolase precursor |
| Enzyme 1 Synonyms |
- Lactase-glycosylceramidase[Includes: Lactase
|
| Enzyme 1 Gene Name |
LCT |
| Enzyme 1 Protein Sequence |
>Lactase-phlorizin hydrolase precursor
MELSWHVVFIALLSFSCWGSDWESDRNFISTAGPLTNDLLHNLSGLLGDQSSNFVAGDKD
MYVCHQPLPTFLPEYFSSLHASQITHYKVFLSWAQLLPAGSTQNPDEKTVQCYRRLLKAL
KTARLQPMVILHHQTLPASTLRRTEAFADLFADYATFAFHSFGDLVGIWFTFSDLEEVIK
ELPHQESRASQLQTLSDAHRKAYEIYHESYAFQGGKLSVVLRAEDIPELLLEPPISALAQ
DTVDFLSLDLSYECQNEASLRQKLSKLQTIEPKVKVFIFNLKLPDCPSTMKNPASLLFSL
FEAINKDQVLTIGFDINEFLSCSSSSKKSMSCSLTGSLALQPDQQQDHETTDSSPASAYQ
RVWEAFANQSRAERDAFLQDTFPEGFLWGASTGAFNVEGGWAEGGRGVSIWDPRRPLNTT
EGQATLEVASDSYHKVASDVALLCGLRAQVYKFSISWSRIFPMGHGSSPSLPGVAYYNKL
IDRLQDAGIEPMATLFHWDLPQALQDHGGWQNESVVDAFLDYAAFCFSTFGDRVKLWVTF
HEPWVMSYAGYGTGQHPPGISDPGVASFKVAHLVLKAHARTWHHYNSHHRPQQQGHVGIV
LNSDWAEPLSPERPEDLRASERFLHFMLGWFAHPVFVDGDYPATLRTQIQQMNRQCSHPV
AQLPEFTEAEKQLLKGSADFLGLSHYTSRLISNAPQNTCIPSYDTIGGFSQHVNHVWPQT
SSSWIRVVPWGIRRLLQFVSLEYTRGKVPIYLAGNGMPIGESENLFDDSLRVDYFNQYIN
EVLKAIKEDSVDVRSYIARSLIDGFEGPSGYSQRFGLHHVNFSDSSKSRTPRKSAYFFTS
IIEKNGFLTKGAKRLLPPNTVNLPSKVRAFTFPSEVPSKAKVVWEKFSSQPKFERDLFYH
GTFRDDFLWGVSSSAYQIEGAWDADGKGPSIWDNFTHTPGSNVKDNATGDIACDSYHQLD
ADLNMLRALKVKAYRFSISWSRIFPTGRNSSINSHGVDYYNRLINGLVASNIFPMVTLFH
WDLPQALQDIGGWENPALIDLFDSYADFCFQTFGDRVKFWMTFNEPMYLAWLGYGSGEFP
PGVKDPGWAPYRIAHTVIKAHARVYHTYDEKYRQEQKGVISLSLSTHWAEPKSPGVPRDV
EAADRMLQFSLGWFAHPIFRNGDYPDTMKWKVGNRSELQHLATSRLPSFTEEEKRFIRAT
ADVFCLNTYYSRIVQHKTPRLNPPSYEDDQEMAEEEDPSWPSTAMNRAAPWGTRRLLNWI
KEEYGDIPIYITENGVGLTNPNTEDTDRIFYHKTYINEALKAYRLDGIDLRGYVAWSLMD
NFEWLNGYTVKFGLYHVDFNNTNRPRTARASARYYTEVITNNGMPLAREDEFLYGRFPEG
FIWSAASAAYQIEGAWRADGKGLSIWDTFSHTPLRVENDAIGDVACDSYHKIAEDLVTLQ
NLGVSHYRFSISWSRILPDGTTRYINEAGLNYYVRLIDTLLAASIQPQVTIYHWDLPQTL
QDVGGWENETIVQRFKEYADVLFQRLGDKVKFWITLNEPFVIAYQGYGYGTAAPGVSNRP
GTAPYIVGHNLIKAHAEAWHLYNDVYRASQGGVISITISSDWAEPRDPSNQEDVEAARRY
VQFMGGWFAHPIFKNGDYNEVMKTRIRDRSLAAGLNKSRLPEFTESEKRRINGTYDFFGF
NHYTTVLAYNLNYATAISSFDADRGVASIADRSWPDSGSFWLKMTPFGFRRILNWLKEEY
NDPPIYVTENGVSQREETDLNDTARIYYLRTYINEALKAVQDKVDLRGYTVWSAMDNFEW
ATGFSERFGLHFVNYSDPSLPRIPKASAKFYASVVRCNGFPDPATGPHACLHQPDAGPTI
SPVRQEEVQFLGLMLGTTEAQTALYVLFSLVLLGVCGLAFLSYKYCKRSKQGKTQRSQQE
LSPVSSF
|
| Enzyme 1 Number of Residues |
1927 |
| Enzyme 1 Molecular Weight |
218604 |
| Enzyme 1 Theoretical pI |
6.30 |
| Enzyme 1 GO Classification |
| Function |
- catalytic activity
- glucosidase activity
- hydrolase activity
- hydrolase activity, acting on glycosyl bonds
- hydrolase activity, hydrolyzing O-glycosyl compounds
|
| Process |
- carbohydrate metabolism
- macromolecule metabolism
- metabolism
- physiological process
|
| Component |
| — |
|
| Enzyme 1 General Function |
Carbohydrate transport and metabolism |
| Enzyme 1 Specific Function |
LPH splits lactose in the small intestine |
| Enzyme 1 Pathways |
|
| Enzyme 1 Reactions |
- lactose + H2O = D-galactose + D-glucose
|
| Enzyme 1 Pfam Domain Function |
|
| Enzyme 1 Signals |
|
| Enzyme 1 Transmembrane Regions |
|
| Enzyme 1 Essentiality |
Not Available |
| Enzyme 1 GenBank ID Protein |
34400  |
| Enzyme 1 UniProtKB/Swiss-Prot ID |
P09848  |
| Enzyme 1 UniProtKB/Swiss-Prot Entry Name |
LPH_HUMAN  |
| Enzyme 1 PDB ID |
Not Available |
| Enzyme 1 Cellular Location |
Not Available |
| Enzyme 1 Gene Sequence |
>5784 bp
ATGGAGCTGTCTTGGCATGTAGTCTTTATTGCCCTGCTAAGTTTTTCATGCTGGGGGTCA
GACTGGGAGTCTGATAGAAATTTCATTTCCACCGCTGGTCCTCTAACCAATGACTTGCTG
CACAACCTGAGTGGTCTCCTGGGAGACCAGAGTTCTAACTTTGTAGCAGGGGACAAAGAC
ATGTATGTTTGTCACCAGCCACTGCCCACTTTCCTGCCAGAATACTTCAGCAGTCTCCAT
GCCAGTCAGATCACCCATTATAAGGTATTTCTGTCATGGGCACAGCTCCTCCCAGCAGGA
AGCACCCAGAATCCAGACGAGAAAACAGTGCAGTGCTACCGGCGACTCCTCAAGGCCCTC
AAGACTGCACGGCTTCAGCCCATGGTCATCCTGCACCACCAGACCCTCCCTGCCAGCACC
CTCCGGAGAACCGAAGCCTTTGCTGACCTCTTCGCCGACTATGCCACATTCGCCTTCCAC
TCCTTCGGGGACCTAGTTGGGATCTGGTTCACCTTCAGTGACTTGGAGGAAGTGATCAAG
GAGCTTCCCCACCAGGAATCAAGAGCGTCACAACTCCAGACCCTCAGTGATGCCCACAGA
AAAGCCTATGAGATTTACCACGAAAGCTATGCTTTTCAGGGCGGAAAACTCTCTGTTGTC
CTGCGAGCTGAAGATATCCCGGAGCTCCTGCTAGAACCACCCATATCTGCGCTTGCCCAG
GACACGGTCGATTTCCTCTCTCTTGATTTGTCTTATGAATGCCAAAATGAGGCAAGTCTG
CGGCAGAAGCTGAGTAAATTGCAGACCATTGAGCCAAAAGTGAAAGTTTTCATCTTCAAC
CTAAAACTCCCAGACTGCCCCTCCACCATGAAGAACCCAGCCAGTCTGCTCTTCAGCCTT
TTTGAAGCCATAAATAAAGACCAAGTGCTCACCATTGGGTTTGATATTAATGAGTTTCTG
AGTTGTTCATCAAGTTCCAAGAAAAGCATGTCTTGTTCTCTGACTGGCAGCCTGGCCCTT
CAGCCTGACCAGCAGCAGGACCACGAGACCACGGACTCCTCTCCTGCCTCTGCCTATCAG
AGAGTCTGGGAAGCATTTGCCAATCAGTCCAGAGCGGAAAGGGATGCCTTCCTGCAGGAT
ACTTTCCCTGAAGGCTTCCTCTGGGGTGCCTCCACAGGAGCCTTTAACGTGGAAGGAGGC
TGGGCCGAGGGTGGGAGAGGGGTGAGCATCTGGGATCCACGCAGGCCCCTGAACACCACT
GAGGGCCAAGCGACGCTGGAGGTGGCCAGCGACAGTTACCACAAGGTAGCCTCTGACGTC
GCCCTGCTTTGCGGCCTCCGGGCTCAGGTGTACAAGTTCTCCATCTCCTGGTCCCGGATC
TTCCCCATGGGGCACGGGAGCAGCCCCAGCCTCCCAGGCGTTGCCTACTACAACAAGCTG
ATTGACAGGCTACAGGATGCGGGCATCGAGCCCATGGCCACGCTGTTCCACTGGGACCTG
CCTCAGGCCCTGCAGGATCATGGTGGATGGCAGAATGAGAGCGTGGTGGATGCCTTCCTG
GACTATGCGGCCTTCTGCTTCTCCACATTTGGGGACCGTGTGAAGCTGTGGGTGACCTTC
CATGAGCCGTGGGTGATGAGCTACGCAGGCTATGGCACCGGCCAGCACCCTCCCGGCATC
TCTGACCCAGGAGTGGCCTCTTTTAAGGTGGCTCACTTGGTCCTCAAGGCTCATGCCAGA
ACTTGGCACCACTACAACAGCCATCATCGCCCACAGCAGCAGGGGCACGTGGGCATTGTG
CTGAACTCAGACTGGGCAGAACCCCTGTCTCCAGAGAGGCCTGAGGACCTGAGAGCCTCT
GAGCGCTTCTTGCACTTCATGCTGGGCTGGTTTGCACACCCCGTCTTTGTGGATGGAGAC
TACCCAGCCACCCTGAGGACCCAGATCCAACAGATGAACAGACAGTGCTCCCATCCTGTG
GCTCAACTCCCCGAGTTCACAGAGGCAGAGAAGCAGCTCCTGAAAGGCTCTGCTGATTTT
CTGGGTCTGTCGCATTACACCTCCCGCCTCATCAGCAACGCCCCACAAAACACCTGCATC
CCTAGCTATGATACCATTGGAGGCTTCTCCCAACACGTGAACCATGTGTGGCCCCAGACC
TCATCCTCTTGGATTCGTGTGGTGCCCTGGGGGATAAGGAGGCTGTTGCAGTTTGTATCC
CTGGAATACACAAGAGGAAAAGTTCCAATATACCTTGCCGGGAATGGCATGCCCATAGGG
GAAAGTGAAAATCTCTTTGATGATTCCTTAAGAGTAGACTACTTCAATCAATATATCAAT
GAGGTGCTCAAGGCTATCAAGGAAGACTCTGTGGATGTTCGTTCCTACATTGCTCGTTCC
CTCATTGATGGCTTCGAAGGCCCTTCTGGTTACAGCCAGCGGTTTGGCCTGCACCACGTC
AACTTCAGCGACAGCAGCAAGTCAAGGACTCCCAGGAAATCTGCCTACTTTTTCACTAGC
ATCATAGAAAAGAACGGTTTCCTCACCAAGGGGGCAAAAAGACTGCTACCACCTAATACA
GTAAACCTCCCCTCCAAAGTCAGAGCCTTCACTTTTCCATCTGAGGTGCCCTCCAAGGCT
AAAGTCGTTTGGGAAAAGTTCTCCAGCCAACCCAAGTTCGAAAGAGATTTGTTCTACCAC
GGGACGTTTCGGGATGACTTTCTGTGGGGCGTGTCCTCTTCCGCTTATCAGATTGAAGGC
GCGTGGGATGCCGATGGCAAAGGCCCCAGCATCTGGGATAACTTTACCCACACACCAGGG
AGCAATGTGAAAGACAATGCCACTGGAGACATCGCCTGTGACAGCTATCACCAGCTGGAT
GCCGATCTGAATATGCTCCGAGCTTTGAAGGTGAAGGCCTACCGCTTCTCTATCTCCTGG
TCTCGGATTTTCCCAACTGGGAGAAACAGCTCTATCAACAGTCATGGGGTTGATTATTAC
AACAGGCTGATCAATGGCTTGGTGGCAAGCAACATCTTTCCCATGGTGACATTGTTCCAT
TGGGACCTGCCCCAGGCCCTCCAGGATATCGGAGGCTGGGAGAATCCTGCCTTGATTGAC
TTGTTTGACAGCTACGCAGACTTTTGTTTCCAGACCTTTGGTGATAGAGTCAAGTTTTGG
ATGACTTTTAATGAGCCCATGTACCTGGCATGGCTAGGTTATGGCTCAGGGGAATTTCCC
CCAGGGGTGAAGGACCCAGGCTGGGCACCATATAGGATAGCCCACACCGTCATCAAAGCC
CATGCCAGAGTCTATCACACGTACGATGAGAAATACAGGCAGGAGCAGAAGGGGGTCATC
TCGCTGAGCCTCAGTACACACTGGGCAGAGCCCAAGTCACCAGGGGTCCCCAGAGATGTG
GAAGCCGCTGACCGAATGCTGCAGTTCTCCCTGGGCTGGTTTGCTCACCCCATTTTTAGA
AACGGAGACTATCCTGACACCATGAAGTGGAAAGTGGGGAACAGGAGTGAACTGCAGCAC
TTAGCCACCTCCCGCCTGCCAAGCTTCACTGAGGAAGAGAAGAGGTTCATCAGGGCGACG
GCCGACGTCTTCTGCCTCAACACGTACTACTCCAGAATCGTGCAGCACAAAACACCCAGG
CTAAACCCACCCTCCTACGAAGACGACCAGGAGATGGCTGAGGAGGAGGACCCTTCGTGG
CCTTCCACGGCAATGAACAGAGCTGCGCCCTGGGGGACGCGAAGGCTGCTGAACTGGATC
AAGGAAGAGTATGGTGACATCCCCATTTACATCACCGAAAACGGAGTGGGGCTGACCAAT
CCGAACACGGAGGATACTGATAGGATATTTTACCACAAAACCTACATCAATGAGGCTTTG
AAAGCCTACAGGCTCGATGGTATAGACCTTCGAGGGTATGTCGCCTGGTCTCTGATGGAC
AACTTTGAGTGGCTAAATGGCTACACGGTCAAGTTTGGACTGTACCATGTTGATTTCAAC
AACACGAACAGGCCTCGCACAGCAAGAGCCTCCGCCAGGTACTACACAGAGGTCATTACC
AACAACGGCATGCCACTGGCCAGGGAGGATGAGTTTCTGTACGGACGGTTTCCTGAGGGC
TTCATCTGGAGTGCAGCTTCTGCTGCATATCAGATTGAAGGTGCGTGGAGAGCAGATGGC
AAAGGACTCAGCATTTGGGACACGTTTTCTCACACACCACTGAGGGTTGAGAACGATGCC
ATTGGAGACGTGGCCTGTGACAGTTATCACAAGATTGCTGAGGATCTGGTCACCCTGCAG
AACCTGGGTGTGTCCCACTACCGTTTTTCCATCTCCTGGTCTCGCATCCTCCCTGATGGA
ACCACCAGGTACATCAATGAAGCGGGCCTGAACTACTACGTGAGGCTCATCGATACACTG
CTGGCCGCCAGCATCCAGCCCCAGGTGACCATTTACCACTGGGACCTACCACAGACGCTC
CAAGATGTAGGAGGCTGGGAGAATGAGACCATCGTGCAGCGGTTTAAGGAGTATGCAGAT
GTGCTCTTCCAGAGGCTGGGAGACAAGGTGAAGTTTTGGATCACGTTGAATGAGCCCTTT
GTCATTGCTTACCAGGGCTATGGCTACGGAACAGCAGCTCCAGGAGTCTCCAATAGGCCT
GGCACTGCCCCCTACATTGTTGGCCACAATCTAATAAAGGCTCATGCTGAGGCCTGGCAT
CTGTACAACGATGTGTACCGCGCCAGTCAAGGTGGCGTGATTTCCATCACCATCAGCAGT
GACTGGGCTGAACCCAGAGATCCCTCTAACCAGGAGGATGTGGAGGCAGCCAGGAGATAT
GTTCAGTTCATGGGAGGCTGGTTTGCACATCCTATTTTCAAGAATGGAGATTACAATGAG
GTGATGAAGACGCGGATCCGTGACAGGAGCTTGGCTGCAGGCCTCAACAAGTCTCGGCTG
CCAGAATTTACAGAGAGTGAGAAGAGGAGGATCAACGGCACCTATGACTTTTTTGGGTTC
AATCACTACACCACTGTCCTCGCCTACAACCTCAACTATGCCACTGCCATCTCTTCTTTT
GATGCAGACAGAGGAGTTGCTTCCATCGCAGATCGCTCGTGGCCAGACTCTGGCTCCTTC
TGGCTGAAGATGACGCCTTTTGGCTTCAGGAGGATCCTGAACTGGTTAAAGGAGGAATAC
AATGACCCTCCAATTTATGTCACAGAGAATGGAGTGTCCCAGCGGGAAGAAACAGACCTC
AATGACACTGCAAGGATCTACTACCTTCGGACTTACATCAATGAGGCCCTCAAAGCTGTG
CAGGACAAGGTGGACCTTCGAGGATACACAGTTTGGAGTGCGATGGACAATTTTGAGTGG
GCCACAGGCTTTTCAGAGAGATTTGGTCTGCATTTTGTGAACTACAGTGACCCTTCTCTG
CCAAGGATCCCCAAAGCATCAGCGAAGTTCTACGCCTCTGTGGTCCGATGCAATGGCTTC
CCTGACCCCGCTACAGGGCCTCACGCTTGTCTCCACCAGCCAGATGCTGGACCCACCATC
AGCCCCGTGAGACAGGAGGAGGTGCAGTTCCTGGGGCTAATGCTCGGCACCACAGAAGCA
CAGACAGCTTTGTACGTTCTCTTTTCTCTTGTGCTTCTTGGAGTCTGTGGCTTGGCATTT
CTGTCATACAAGTACTGCAAGCGCTCTAAGCAAGGGAAAACACAACGAAGCCAACAGGAA
TTGAGCCCGGTGTCTTCATTCTGA
|
| Enzyme 1 GenBank Gene ID |
X07994  |
| Enzyme 1 GeneCard ID |
LCT  |
| Enzyme 1 GenAtlas ID |
LCT  |
| Enzyme 1 HGNC ID |
HGNC:6530  |
| Enzyme 1 Chromosome Location |
Not Available |
| Enzyme 1 Locus |
Not Available |
| Enzyme 1 SNPs |
SNPJam Report  |
| Enzyme 1 General References |
- Mantei N, Villa M, Enzler T, Wacker H, Boll W, James P, Hunziker W, Semenza G: Complete primary structure of human and rabbit lactase-phlorizin hydrolase: implications for biosynthesis, membrane anchoring and evolution of the enzyme. EMBO J. 1988 Sep;7(9):2705-13. [PubMed
]
- Boll W, Wagner P, Mantei N: Structure of the chromosomal gene and cDNAs coding for lactase-phlorizin hydrolase in humans with adult-type hypolactasia or persistence of lactase. Am J Hum Genet. 1991 May;48(5):889-902. [PubMed
]
|
| Enzyme 1 Metabolite References |
Not Available |
|
Enzyme 2
[top]
|
| Enzyme 2 ID |
5608 |
| Enzyme 2 Name |
Alpha-lactalbumin precursor |
| Enzyme 2 Synonyms |
- Lactose synthase B protein
- Lysozyme- like protein 7
|
| Enzyme 2 Gene Name |
LALBA |
| Enzyme 2 Protein Sequence |
>Alpha-lactalbumin precursor
MRFFVPLFLVGILFPAILAKQFTKCELSQLLKDIDGYGGIALPELICTMFHTSGYDTQAI
VENNESTEYGLFQISNKLWCKSSQVPQSRNICDISCDKFLDDDITDDIMCAKKILDIKGI
DYWLAHKALCTEKLEQWLCEKL
|
| Enzyme 2 Number of Residues |
142 |
| Enzyme 2 Molecular Weight |
16225 |
| Enzyme 2 Theoretical pI |
4.60 |
| Enzyme 2 GO Classification |
| Function |
- UDP-galactosyltransferase activity
- UDP-glycosyltransferase activity
- binding
- calcium ion binding
- catalytic activity
- cation binding
- ion binding
- lactose synthase activity
- transferase activity
- transferase activity, transferring glycosyl groups
|
| Process |
- carbohydrate metabolism
- cellular carbohydrate metabolism
- disaccharide metabolism
- lactose biosynthesis
- lactose metabolism
- macromolecule metabolism
- metabolism
- physiological process
|
| Component |
|
|
| Enzyme 2 General Function |
Not Available |
| Enzyme 2 Specific Function |
Regulatory subunit of lactose synthase, changes the substrate specificity of galactosyltransferase in the mammary gland making glucose a good acceptor substrate for this enzyme. This enables LS to synthesize lactose, the major carbohydrate component of milk. In other tissues, galactosyltransferase transfers galactose onto the N-acetylglucosamine of the oligosaccharide chains in glycoproteins |
| Enzyme 2 Pathways |
Not Available |
| Enzyme 2 Reactions |
Not Available |
| Enzyme 2 Pfam Domain Function |
|
| Enzyme 2 Signals |
|
| Enzyme 2 Transmembrane Regions |
Not Available |
| Enzyme 2 Essentiality |
Not Available |
| Enzyme 2 GenBank ID Protein |
307104  |
| Enzyme 2 UniProtKB/Swiss-Prot ID |
P00709  |
| Enzyme 2 UniProtKB/Swiss-Prot Entry Name |
LALBA_HUMAN  |
| Enzyme 2 PDB ID |
1HML  |
| Enzyme 2 PDB File |
Show |
| Enzyme 2 3D Structure |
|
| Enzyme 2 Cellular Location |
Not Available |
| Enzyme 2 Gene Sequence |
>429 bp
ATGAGGTTCTTTGTCCCTCTGTTCCTGGTGGGCATCCTGTTCCCTGCCATCCTGGCCAAG
CAATTCACAAAATGTGAGCTGTCCCAGCTGCTGAAAGACATAGATGGTTATGGAGGCATC
GCTTTGCCTGAATTGATCTGTACCATGTTTCACACCAGTGGTTATGACACACAAGCCATA
GTTGAAAACAATGAAAGCACGGAATATGGACTCTTCCAGATCAGTAATAAGCTTTGGTGC
AAGAGCAGCCAGGTCCCTCAGTCAAGGAACATCTGTGACATCTCCTGTGACAAGTTCCTG
GATGATGACATTACTGATGACATAATGTGTGCCAAGAAGATCCTGGATATTAAAGGAATT
GACTACTGGTTGGCCCATAAAGCCCTCTGCACTGAGAAGCTGGAACAGTGGCTTTGTGAG
AAGTTGTGA
|
| Enzyme 2 GenBank Gene ID |
J00270  |
| Enzyme 2 GeneCard ID |
LALBA  |
| Enzyme 2 GenAtlas ID |
LALBA  |
| Enzyme 2 HGNC ID |
HGNC:6480  |
| Enzyme 2 Chromosome Location |
12 |
| Enzyme 2 Locus |
12q13 |
| Enzyme 2 SNPs |
SNPJam Report  |
| Enzyme 2 General References |
- Hall L, Craig RK, Edbrooke MR, Campbell PN: Comparison of the nucleotide sequence of cloned human and guinea-pig pre-alpha-lactalbumin cDNA with that of chick pre-lysozyme cDNA suggests evolution from a common ancestral gene. Nucleic Acids Res. 1982 Jun 11;10(11):3503-15. [PubMed
]
- Hall L, Emery DC, Davies MS, Parker D, Craig RK: Organization and sequence of the human alpha-lactalbumin gene. Biochem J. 1987 Mar 15;242(3):735-42. [PubMed
]
- Findlay JB, Brew K: The complete amino-acid sequence of human -lactalbumin. Eur J Biochem. 1972 May;27(1):65-86. [PubMed
]
- Acharya KR, Ren JS, Stuart DI, Phillips DC, Fenna RE: Crystal structure of human alpha-lactalbumin at 1.7 A resolution. J Mol Biol. 1991 Sep 20;221(2):571-81. [PubMed
]
- Ren J, Stuart DI, Acharya KR: Alpha-lactalbumin possesses a distinct zinc binding site. J Biol Chem. 1993 Sep 15;268(26):19292-8. [PubMed
]
- Chandra N, Brew K, Acharya KR: Structural evidence for the presence of a secondary calcium binding site in human alpha-lactalbumin. Biochemistry. 1998 Apr 7;37(14):4767-72. [PubMed
]
- Harata K, Abe Y, Muraki M: Crystallographic evaluation of internal motion of human alpha-lactalbumin refined by full-matrix least-squares method. J Mol Biol. 1999 Mar 26;287(2):347-58. [PubMed
]
|
| Enzyme 2 Metabolite References |
Not Available |
|
Enzyme 3
[top]
|
| Enzyme 3 ID |
5614 |
| Enzyme 3 Name |
Beta-1,4-galactosyltransferase 1 |
| Enzyme 3 Synonyms |
- Beta-1,4-GalTase 1
- Beta4Gal-T1
- b4Gal-T1
- UDP-galactose:beta-N-acetylglucosamine beta- 1,4-galactosyltransferase 1
- UDP-Gal:beta-GlcNAc beta-1,4- galactosyltransferase 1[Includes: Lactose synthase A protein
- Nal synthetase
- Beta-N-acetylglucosaminylglycopeptide beta-1,4- galactosyltransferase
|
| Enzyme 3 Gene Name |
B4GALT1 |
| Enzyme 3 Protein Sequence |
>Beta-1,4-galactosyltransferase 1
MRLREPLLSGSAAMPGASLQRACRLLVAVCALHLGVTLVYYLAGRDLSRLPQLVGVSTPL
QGGSNSAAAIGQSSGELRTGGARPPPPLGASSQPRPGGDSSPVVDSGPGPASNLTSVPVP
HTTALSLPACPEESPLLVGPMLIEFNMPVDLELVAKQNPNVKMGGRYAPRDCVSPHKVAI
IIPFRNRQEHLKYWLYYLHPVLQRQQLDYGIYVINQAGDTIFNRAKLLNVGFQEALKDYD
YTCFVFSDVDLIPMNDHNAYRCFSQPRHISVAMDKFGFSLPYVQYFGGVSALSKQQFLTI
NGFPNNYWGWGGEDDDIFNRLVFRGMSISRPNAVVGRCRMIRHSRDKKNEPNPQRFDRIA
HTKETMLSDGLNSLTYQVLDVQRYPLYTQITVDIGTPS
|
| Enzyme 3 Number of Residues |
398 |
| Enzyme 3 Molecular Weight |
43921 |
| Enzyme 3 Theoretical pI |
8.77 |
| Enzyme 3 GO Classification |
| Function |
- catalytic activity
- transferase activity
- transferase activity, transferring glycosyl groups
|
| Process |
- carbohydrate metabolism
- macromolecule metabolism
- metabolism
- physiological process
|
| Component |
| — |
|
| Enzyme 3 General Function |
Not Available |
| Enzyme 3 Specific Function |
The cell surface form functions as a recognition molecule during a variety of cell to cell and cell to matrix interactions, as those occurring during development and egg fertilization, by binding to specific oligosaccharide ligands on opposing cells or in the extracellular matrix |
| Enzyme 3 Pathways |
|
| Enzyme 3 Reactions |
- UDP-galactose + N-acetyl-D-glucosamine = UDP + N-acetyllactosamine
|
| Enzyme 3 Pfam Domain Function |
|
| Enzyme 3 Signals |
|
| Enzyme 3 Transmembrane Regions |
Not Available |
| Enzyme 3 Essentiality |
Not Available |
| Enzyme 3 GenBank ID Protein |
29424  |
| Enzyme 3 UniProtKB/Swiss-Prot ID |
P15291  |
| Enzyme 3 UniProtKB/Swiss-Prot Entry Name |
B4GT1_HUMAN  |
| Enzyme 3 PDB ID |
Not Available |
| Enzyme 3 Cellular Location |
Not Available |
| Enzyme 3 Gene Sequence |
>1203 bp
ATGAGGCTTCGGGAGCCGCTCCTGAGCGGCGCCGCGATGCCAGGCGCGTCCCTACAGCGG
GCCTGCCGCCTGCTCGTGGCCGTCTGCGCTCTGCACCTTGGCGTCACCCTCGTTTACTAC
CTGGCTGGCCGCGACCTGAGCCGCCTGCCCCAACTGGTCGGAGTCTCCACACCGCTGCAG
GGCGGCTCGAACAGTGCCGCCGCCATCGGGCAGTCCTCCGGGGAGCTCCGGACCGGAGGG
GCCCGGCCGCCGCCTCCTCTAGGCGCCTCCTCCCAGCCGCGCCCGGGTGGCGACTCCAGC
CCAGTCGTGGATTCTGGCCCTGGCCCCGCTAGCAACTTGACCTCGGTCCCAGTGCCCCAC
ACCACCGCACTGTCGCTGCCCGCCTGCCCTGAGGAGTCCCCGCTGCTTGTGGGCCCCATG
CTGATTGAGTTTAACATGCCTGTGGACCTGGAGCTCGTGGCAAAGCAGAACCCAAATGTG
AAGATGGGCGGCCGCTATGCCCCCAGGGACTGCGTCTCTCCTCACAAAGTGGCCATCATC
ATTCCATTCCGCAACCGGCAGGAGCACCTCAAGTACTGGCTATATTATTTGCACCCAGTC
CTGCAGCGCCAGCAGCTGGACTATGGCATCTATGGCATCTATGTTATCAACCAGGCGGGA
GACACTATATTCAATCGTGCTAAGCTCCTCAATGTTGGCTTTCAAGAAGCCTTGAAGGAC
TATGACTACACCTGCTTTGTGTTTAGTGACGTGGACCTCATCCCAATGAATGACCATAAT
GCGTACAGGTGTTTTTCACAGCCACGGCACATTTCCGTTGCAATGGATAAGTTTGGATTC
AGCCTACCTTATGTTCAGTATTTTGGAGGTGTCTCTGCTCTAAGTAAACAACAGTTTCTA
ACCATCAATGGATTTCCTAATAATTATTGGGGCTGGGGAGGAGAAGATGATGACATTTTT
AACAGATTAGTTTTTAGAGGCATGTCTATATCTCGCCCAAATGCTGTGGTCGGGAGGTGT
CGCATGATCCGCCACTCAAGAGACAAAAAAAATGAACCCAATCCTCAGAGGTTTGACCGA
ATTGCACACACAAAGGAGACAATGCTCTCTGATGGTTTGAACTCACTCACCTACCAGGTG
CTGGATGTACAGAGATACCCATTGTATACCCAAATCACAGTGGACATCGGGACACCGAGC
TAG
|
| Enzyme 3 GenBank Gene ID |
X14085  |
| Enzyme 3 GeneCard ID |
B4GALT1  |
| Enzyme 3 GenAtlas ID |
B4GALT1  |
| Enzyme 3 HGNC ID |
HGNC:924  |
| Enzyme 3 Chromosome Location |
9 |
| Enzyme 3 Locus |
9p13 |
| Enzyme 3 SNPs |
SNPJam Report  |
| Enzyme 3 General References |
- Masri KA, Appert HE, Fukuda MN: Identification of the full-length coding sequence for human galactosyltransferase (beta-N-acetylglucosaminide: beta 1,4-galactosyltransferase). Biochem Biophys Res Commun. 1988 Dec 15;157(2):657-63. [PubMed
]
- Watzele G, Berger EG: Near identity of HeLa cell galactosyltransferase with the human placental enzyme. Nucleic Acids Res. 1990 Dec 11;18(23):7174. [PubMed
]
- Mengle-Gaw L, McCoy-Haman MF, Tiemeier DC: Genomic structure and expression of human beta-1,4-galactosyltransferase. Biochem Biophys Res Commun. 1991 May 15;176(3):1269-76. [PubMed
]
- Uejima T, Uemura M, Nozawa S, Narimatsu H: Complementary DNA cloning for galactosyltransferase associated with tumor and determination of antigenic epitopes recognized by specific monoclonal antibodies. Cancer Res. 1992 Nov 15;52(22):6158-63. [PubMed
]
- Kudo T, Narimatsu H: The beta 1,4-galactosyltransferase gene is post-transcriptionally regulated during differentiation of mouse F9 teratocarcinoma cells. Glycobiology. 1995 Jun;5(4):397-403. [PubMed
]
- Chatterjee SK, Mukerjee S, Tripathi PK: Analysis of the sequences of human beta-1,4-galactosyltransferase cDNA clones. Int J Biochem Cell Biol. 1995 Mar;27(3):329-36. [PubMed
]
- Appert HE, Rutherford TJ, Tarr GE, Wiest JS, Thomford NR, McCorquodale DJ: Isolation of a cDNA coding for human galactosyltransferase. Biochem Biophys Res Commun. 1986 Aug 29;139(1):163-8. [PubMed
]
- Appert HE, Rutherford TJ, Tarr GE, Thomford NR, McCorquodale DJ: Isolation of galactosyltransferase from human milk and the determination of its N-terminal amino acid sequence. Biochem Biophys Res Commun. 1986 Jul 16;138(1):224-9. [PubMed
]
- Aoki D, Appert HE, Johnson D, Wong SS, Fukuda MN: Analysis of the substrate binding sites of human galactosyltransferase by protein engineering. EMBO J. 1990 Oct;9(10):3171-8. [PubMed
]
- Lopez LC, Youakim A, Evans SC, Shur BD: Evidence for a molecular distinction between Golgi and cell surface forms of beta 1,4-galactosyltransferase. J Biol Chem. 1991 Aug 25;266(24):15984-91. [PubMed
]
- Yamaguchi N, Fukuda MN: Golgi retention mechanism of beta-1,4-galactosyltransferase. Membrane-spanning domain-dependent homodimerization and association with alpha- and beta-tubulins. J Biol Chem. 1995 May 19;270(20):12170-6. [PubMed
]
- Amado M, Almeida R, Schwientek T, Clausen H: Identification and characterization of large galactosyltransferase gene families: galactosyltransferases for all functions. Biochim Biophys Acta. 1999 Dec 6;1473(1):35-53. [PubMed
]
|
| Enzyme 3 Metabolite References |
Not Available |
|
Enzyme 4
[top]
|
| Enzyme 4 ID |
6124 |
| Enzyme 4 Name |
Beta-galactosidase precursor |
| Enzyme 4 Synonyms |
- Lactase
- Acid beta- galactosidase
|
| Enzyme 4 Gene Name |
GLB1 |
| Enzyme 4 Protein Sequence |
>Beta-galactosidase precursor
MPGFLVRILLLLLVLLLLGPTRGLRNATQRMFEIDYSRDSFLKDGQPFRYISGSIHYSRV
PRFYWKDRLLKMKMAGLNAIQTYVPWNFHEPWPGQYQFSEDHDVEYFLRLAHELGLLVIL
RPGPYICAEWEMGGLPAWLLEKESILLRSSDPDYLAAVDKWLGVLLPKMKPLLYQNGGPV
ITVQVENEYGSYFACDFDYLRFLQKRFRHHLGDDVVLFTTDGAHKTFLKCGALQGLYTTV
DFGTGSNITDAFLSQRKCEPKGPLINSEFYTGWLDHWGQPHSTIKTEAVASSLYDILARG
ASVNLYMFIGGTNFAYWNGANSPYAAQPTSYDYDAPLSEAGDLTEKYFALRNIIQKFEKV
PEGPIPPSTPKFAYGKVTLEKLKTVGAALDILCPSGPIKSLYPLTFIQVKQHYGFVLYRT
TLPQDCSNPAPLSSPLNGVHDRAYVAVDGIPQGVLERNNVITLNITGKAGATLDLLVENM
GRVNYGAYINDFKGLVSNLTLSSNILTDWTIFPLDTEDAVRSHLGGWGHRDSGHHDEAWA
HNSSNYTLPAFYMGNFSIPSGIPDLPQDTFIQFPGWTKGQVWINGFNLGRYWPARGPQLT
LFVPQHILMTSAPNTITVLELEWAPCSSDDPELCAVTFVDRPVIGSSVTYDHPSKPVEKR
LMPPPPQKNKDSWLDHV
|
| Enzyme 4 Number of Residues |
677 |
| Enzyme 4 Molecular Weight |
76092 |
| Enzyme 4 Theoretical pI |
6.55 |
| Enzyme 4 GO Classification |
| Function |
- beta-galactosidase activity
- catalytic activity
- galactosidase activity
- hydrolase activity
- hydrolase activity, acting on glycosyl bonds
- hydrolase activity, hydrolyzing O-glycosyl compounds
|
| Process |
- carbohydrate metabolism
- macromolecule metabolism
- metabolism
- physiological process
|
| Component |
- beta-galactosidase complex
- protein complex
- unlocalized protein complex
|
|
| Enzyme 4 General Function |
Carbohydrate transport and metabolism |
| Enzyme 4 Specific Function |
Cleaves beta-linked terminal galactosyl residues from gangliosides, glycoproteins, and glycosaminoglycans |
| Enzyme 4 Pathways |
|
| Enzyme 4 Reactions |
- Hydrolysis of terminal non-reducing beta-D-galactose residues in beta-D-galactosides
|
| Enzyme 4 Pfam Domain Function |
|
| Enzyme 4 Signals |
|
| Enzyme 4 Transmembrane Regions |
Not Available |
| Enzyme 4 Essentiality |
Not Available |
| Enzyme 4 GenBank ID Protein |
179401  |
| Enzyme 4 UniProtKB/Swiss-Prot ID |
P16278  |
| Enzyme 4 UniProtKB/Swiss-Prot Entry Name |
BGAL_HUMAN  |
| Enzyme 4 PDB ID |
Not Available |
| Enzyme 4 Cellular Location |
Not Available |
| Enzyme 4 Gene Sequence |
>2034 bp
ATGCCGGGGTTCCTGGTTCGCATCCTCCTTCTGCTGCTGGTTCTGCTGCTTCTGGGCCCT
ACGCGCGGCTTGCGCAATGCCACCCAGAGGATGTTTGAAATTGACTATAGCCGGGACTCC
TTCCTCAAGGATGGCCAGCCATTTCGCTACATCTCAGGAAGCATTCACTACTCCCGTGTG
CCCCGCTTCTACTGGAAGGACCGGCTGCTGAAGATGAAGATGGCTGGGCTGAACGCCATC
CAGACGTATGTGCCCTGGAACTTTCATGAGCCCTGGCCAGGACAGTACCAGTTTTCTGAG
GACCATGATGTGGAATATTTTCTTCGGCTGGCTCATGAGCTGGGACTGCTGGTTATCCTG
AGGCCCGGGCCCTACATCTGTGCAGAGTGGGAAATGGGAGGATTACCTGCTTGGCTGCTA
GAGAAAGAGTCTATTCTTCTCCGCTCCTCCGACCCAGATTACCTGGCAGCTGTGGACAAG
TGGTTGGGAGTCCTTCTGCCCAAGATGAAGCCTCTCCTCTATCAGAATGGAGGGCCAGTT
ATAACAGTGCAGGTTGAAAATGAATATGGCAGCTACTTTGCCTGTGATTTTGACTACCTG
CGCTTCCTGCAGAAGCGCTTTCGCCACCATCTGGGGGATGATGTGGTTCTGTTTACCACT
GATGGAGCACATAAAACATTCCTGAAATGTGGGGCCCTGCAGGGCCTCTACACCACGGTG
GACTTTGGAACAGGCAGCAACATCACAGATGCTTTCCTAAGCCAGAGGAAGTGTGAGCCC
AAAGGACCCTTGATCAATTCTGAATTCTATACTGGCTGGCTAGATCACTGGGGCCAACCT
CACTCCACAATCAAGACCGAAGCAGTGGCTTCCTCCCTCTATGATATACTTGCCCGTGGG
GCGAGTGTGAACTTGTACATGTTTATAGGTGGGACCAATTTTGCCTATTGGAATGGGGCC
AACTCACCCTATGCAGCACAGCCCACCAGCTACGACTATGATGCCCCACTGAGTGAGGCT
GGGGACCTCACTGAGAAGTATTTTGCTCTGCGAAACATCATCCAGAAGTTTGAAAAAGTA
CCAGAAGGTCCTATCCCTCCATCTACACCAAAGTTTGCATATGGAAAGGTCACTTTGGAA
AAGTTAAAGACAGTGGGAGCAGCTCTGGACATTCTGTGTCCCTCTGGGCCCATCAAAAGC
CTTTATCCCTTGACATTTATCCAGGTGAAACAGCATTATGGGTTTGTGCTGTACCGGACA
ACACTTCCTCAAGATTGCAGCAACCCAGCACCTCTCTCTTCACCCCTCAATGGAGTCCAC
GATCGAGCATATGTTGCTGTGGATGGGATCCCCCAGGGAGTCCTTGAGCGAAACAATGTG
ATCACTCTGAACATAACAGGGAAAGCTGGAGCCACTCTGGACCTTCTGGTAGAGAACATG
GGACGTGTGAACTATGGTGCATATATCAACGATTTTAAGGGTTTGGTTTCTAACCTGACT
CTCAGTTCCAATATCCTCACGGACTGGACGATCTTTCCACTGGACACTGAGGATGCAGTG
CGCAGCCACCTGGGGGGCTGGGGACACCGTGACAGTGGCCACCATGATGAAGCCTGGGCC
CACAACTCATCCAACTACACGCTCCCGGCCTTTTATATGGGGAACTTCTCCATTCCCAGT
GGGATCCCAGACTTGCCCCAGGACACCTTTATCCAGTTTCCTGGATGGACCAAGGGCCAG
GTCTGGATTAATGGCTTTAACCTTGGCCGCTATTGGCCAGCCCGGGGCCCTCAGTTGACC
TTGTTTGTGCCCCAGCACATCCTGATGACCTCGGCCCCAAACACCATCACCGTGCTGGAA
CTGGAGTGGGCACCCTGCAGCAGTGATGATCCAGAACTATGTGCTGTGACGTTCGTGGAC
AGGCCAGTTATTGGCTCATCTGTGACCTACGATCATCCCTCCAAACCTGTTGAAAAAAGA
CTCATGCCCCCACCCCCGCAAAAAAACAAAGATTCATGGCTGGACCATGTATGA
|
| Enzyme 4 GenBank Gene ID |
M27507  |
| Enzyme 4 GeneCard ID |
GLB1  |
| Enzyme 4 GenAtlas ID |
GLB1  |
| Enzyme 4 HGNC ID |
HGNC:4298  |
| Enzyme 4 Chromosome Location |
3 |
| Enzyme 4 Locus |
3p21.33 |
| Enzyme 4 SNPs |
SNPJam Report  |
| Enzyme 4 General References |
- Morreau H, Galjart NJ, Gillemans N, Willemsen R, van der Horst GT, d'Azzo A: Alternative splicing of beta-galactosidase mRNA generates the classic lysosomal enzyme and a beta-galactosidase-related protein. J Biol Chem. 1989 Dec 5;264(34):20655-63. [PubMed
]
- Yamamoto Y, Hake CA, Martin BM, Kretz KA, Ahern-Rindell AJ, Naylor SL, Mudd M, O'Brien JS: Isolation, characterization, and mapping of a human acid beta-galactosidase cDNA. DNA Cell Biol. 1990 Mar;9(2):119-27. [PubMed
]
- Oshima A, Tsuji A, Nagao Y, Sakuraba H, Suzuki Y: Cloning, sequencing, and expression of cDNA for human beta-galactosidase. Biochem Biophys Res Commun. 1988 Nov 30;157(1):238-44. [PubMed
]
- Hinek A, Zhang S, Smith AC, Callahan JW: Impaired elastic-fiber assembly by fibroblasts from patients with either Morquio B disease or infantile GM1-gangliosidosis is linked to deficiency in the 67-kD spliced variant of beta-galactosidase. Am J Hum Genet. 2000 Jul;67(1):23-36. Epub 2000 Jun 6. [PubMed
]
- Callahan JW: Molecular basis of GM1 gangliosidosis and Morquio disease, type B. Structure-function studies of lysosomal beta-galactosidase and the non-lysosomal beta-galactosidase-like protein. Biochim Biophys Acta. 1999 Oct 8;1455(2-3):85-103. [PubMed
]
- Oshima A, Yoshida K, Shimmoto M, Fukuhara Y, Sakuraba H, Suzuki Y: Human beta-galactosidase gene mutations in morquio B disease. Am J Hum Genet. 1991 Nov;49(5):1091-3. [PubMed
]
- Nishimoto J, Nanba E, Inui K, Okada S, Suzuki K: GM1-gangliosidosis (genetic beta-galactosidase deficiency): identification of four mutations in different clinical phenotypes among Japanese patients. Am J Hum Genet. 1991 Sep;49(3):566-74. [PubMed
]
- Yoshida K, Oshima A, Shimmoto M, Fukuhara Y, Sakuraba H, Yanagisawa N, Suzuki Y: Human beta-galactosidase gene mutations in GM1-gangliosidosis: a common mutation among Japanese adult/chronic cases. Am J Hum Genet. 1991 Aug;49(2):435-42. [PubMed
]
- Mosna G, Fattore S, Tubiello G, Brocca S, Trubia M, Gianazza E, Gatti R, Danesino C, Minelli A, Piantanida M: A homozygous missense arginine to histidine substitution at position 482 of the beta-galactosidase in an Italian infantile GM1-gangliosidosis patient. Hum Genet. 1992 Nov;90(3):247-50. [PubMed
]
- Boustany RM, Qian WH, Suzuki K: Mutations in acid beta-galactosidase cause GM1-gangliosidosis in American patients. Am J Hum Genet. 1993 Oct;53(4):881-8. [PubMed
]
- Chakraborty S, Rafi MA, Wenger DA: Mutations in the lysosomal beta-galactosidase gene that cause the adult form of GM1 gangliosidosis. Am J Hum Genet. 1994 Jun;54(6):1004-13. [PubMed
]
- Ishii N, Oohira T, Oshima A, Sakuraba H, Endo F, Matsuda I, Sukegawa K, Orii T, Suzuki Y: Clinical and molecular analysis of a Japanese boy with Morquio B disease. Clin Genet. 1995 Aug;48(2):103-8. [PubMed
]
- Kaye EM, Shalish C, Livermore J, Taylor HA, Stevenson RE, Breakefield XO: beta-Galactosidase gene mutations in patients with slowly progressive GM1 gangliosidosis. J Child Neurol. 1997 Jun;12(4):242-7. [PubMed
]
- Bagshaw RD, Zhang S, Hinek A, Skomorowski MA, Whelan D, Clarke JT, Callahan JW: Novel mutations (Asn 484 Lys, Thr 500 Ala, Gly 438 Glu) in Morquio B disease. Biochim Biophys Acta. 2002 Dec 12;1588(3):247-53. [PubMed
]
- Silva CM, Severini MH, Sopelsa A, Coelho JC, Zaha A, d'Azzo A, Giugliani R: Six novel beta-galactosidase gene mutations in Brazilian patients with GM1-gangliosidosis. Hum Mutat. 1999;13(5):401-9. [PubMed
]
- Zhang S, Bagshaw R, Hilson W, Oho Y, Hinek A, Clarke JT, Callahan JW: Characterization of beta-galactosidase mutations Asp332-->Asn and Arg148-->Ser, and a polymorphism, Ser532-->Gly, in a case of GM1 gangliosidosis. Biochem J. 2000 Jun 15;348 Pt 3:621-32. [PubMed
]
- Morrone A, Bardelli T, Donati MA, Giorgi M, Di Rocco M, Gatti R, Parini R, Ricci R, Taddeucci G, D'Azzo A, Zammarchi E: beta-galactosidase gene mutations affecting the lysosomal enzyme and the elastin-binding protein in GM1-gangliosidosis patients with cardiac involvement. Hum Mutat. 2000;15(4):354-66. [PubMed
]
- Paschke E, Milos I, Kreimer-Erlacher H, Hoefler G, Beck M, Hoeltzenbein M, Kleijer W, Levade T, Michelakakis H, Radeva B: Mutation analyses in 17 patients with deficiency in acid beta-galactosidase: three novel point mutations and high correlation of mutation W273L with Morquio disease type B. Hum Genet. 2001 Aug;109(2):159-66. [PubMed
]
|
| Enzyme 4 Metabolite References |
Not Available |
|
Enzyme 5
[top]
|
| Enzyme 5 ID |
16488 |
| Enzyme 5 Name |
cDNA, FLJ93218, Homo sapiens UDP-Gal:betaGlcNAc beta 1,4- galactosyltransferase,polypeptide 1 (B4GALT1), mRNA (UDP-Gal:betaGlcNAc beta 1,4-galactosyltransferase, polypeptide 1, isoform CRA_a) |
| Enzyme 5 Synonyms |
Not Available |
| Enzyme 5 Gene Name |
B4GALT1 |
| Enzyme 5 Protein Sequence |
>cDNA, FLJ93218, Homo sapiens UDP-Gal:betaGlcNAc beta 1,4- galactosyltransferase,polypeptide 1 (B4GALT1), mRNA (UDP-Gal:betaGlcNAc beta 1,4-galactosyltransferase, polypeptide 1, isoform CRA_a)
MRLREPLLSGSAAMPGASLQRACRLLVAVCALHLGVTLVYYLAGRDLSRLPQLVGVSTPL
QGGSNSAAAIGQSSGELRTGGARPPPPLGASSQPRPGGDSSPVVDSGPGPASNLTSVPVP
HTTALSLPACPEESPLLVGPMLIEFNMPVDLELVAKQNPNVKMGGRYAPRDCVSPHKVAI
IIPFRNRQEHLKYWLYYLHPVLQRQQLDYGIYVINQAGDTIFNRAKLLNVGFQEALKDYD
YTCFVFSDVDLIPMNDHNAYRCFSQPRHISVAMDKFGFSLPYVQYFGGVSALSKQQFLTI
NGFPNNYWGWGGEDDDIFNRLVFRGMSISRPNAVVGRCRMIRHSRDKKNEPNPQRFDRIA
HTKETMLSDGLNSLTYQVLDVQRYPLYTQITVDIGTPS
|
| Enzyme 5 Number of Residues |
398 |
| Enzyme 5 Molecular Weight |
43921 |
| Enzyme 5 Theoretical pI |
8.77 |
| Enzyme 5 GO Classification |
| Function |
- catalytic activity
- transferase activity
- transferase activity, transferring glycosyl groups
|
| Process |
- carbohydrate metabolism
- macromolecule metabolism
- metabolism
- physiological process
|
| Component |
| — |
|
| Enzyme 5 General Function |
Not Available |
| Enzyme 5 Specific Function |
Not Available |
| Enzyme 5 Pathways |
Not Available |
| Enzyme 5 Reactions |
Not Available |
| Enzyme 5 Pfam Domain Function |
|
| Enzyme 5 Signals |
|
| Enzyme 5 Transmembrane Regions |
|
| Enzyme 5 Essentiality |
Not Available |
| Enzyme 5 GenBank ID Protein |
Not Available |
| Enzyme 5 UniProtKB/Swiss-Prot ID |
B2R710  |
| Enzyme 5 UniProtKB/Swiss-Prot Entry Name |
B2R710_HUMAN  |
| Enzyme 5 PDB ID |
1FR8  |
| Enzyme 5 PDB File |
Show |
| Enzyme 5 3D Structure |
|
| Enzyme 5 Cellular Location |
Not Available |
| Enzyme 5 Gene Sequence |
Not Available |
| Enzyme 5 GenBank Gene ID |
AK312797  |
| Enzyme 5 GeneCard ID |
B2R710  |
| Enzyme 5 GenAtlas ID |
Not Available |
| Enzyme 5 HGNC ID |
Not Available |
| Enzyme 5 Chromosome Location |
Not Available |
| Enzyme 5 Locus |
Not Available |
| Enzyme 5 SNPs |
SNPJam Report  |
| Enzyme 5 General References |
Not Available |
| Enzyme 5 Metabolite References |
Not Available |
|
Enzyme 6
[top]
|
| Enzyme 6 ID |
16489 |
| Enzyme 6 Name |
cDNA FLJ38554 fis, clone HCHON2002496, highly similar to Beta-1,4-galactosyltransferase 2 (EC 2.4.1.-) |
| Enzyme 6 Synonyms |
- SubName: UDP-Gal:betaGlcNAc beta 1,4-galactosyltransferase, polypeptide 2, isoform CRA_a
|
| Enzyme 6 Gene Name |
B4GALT2 |
| Enzyme 6 Protein Sequence |
>cDNA FLJ38554 fis, clone HCHON2002496, highly similar to Beta-1,4-galactosyltransferase 2 (EC 2.4.1.-)
MSRLLGGTLERVCKAVLLLCLLHFLVAVILYFDVYAQHLAFFSRFSARGPAHALHPAASS
SSSSSNCSRPNATASSSGLPEVPSALPGPTAPTLPPCPDSPPGLVGRLLIEFTSPMPLER
VQRENPGVLMGGRYTPPDCTPAQTVAVIIPFRHREHHLRYWLHYLHPILRRQRLRYGVYV
INQHGEDTFNRAKLLNVGFLEALKEDAAYDCFIFSDVDLVPMDDRNLYRCGDQPRHFAIA
MDKFGFRLPYAGYFGGVSGLSKAQFLRINGFPNEYWGWGGEDDDIFNRISLTGMKISRPD
IRIGRYRMIKHDRDKHNEPNPQRFTKIQNTKLTMKRDGIGSVRYQVLEVSRQPLFTNITV
DIGRPPSWPPRG
|
| Enzyme 6 Number of Residues |
372 |
| Enzyme 6 Molecular Weight |
41973 |
| Enzyme 6 Theoretical pI |
9.66 |
| Enzyme 6 GO Classification |
| Function |
- catalytic activity
- transferase activity
- transferase activity, transferring glycosyl groups
|
| Process |
- carbohydrate metabolism
- macromolecule metabolism
- metabolism
- physiological process
|
| Component |
| — |
|
| Enzyme 6 General Function |
Not Available |
| Enzyme 6 Specific Function |
Not Available |
| Enzyme 6 Pathways |
Not Available |
| Enzyme 6 Reactions |
Not Available |
| Enzyme 6 Pfam Domain Function |
|
| Enzyme 6 Signals |
|
| Enzyme 6 Transmembrane Regions |
|
| Enzyme 6 Essentiality |
Not Available |
| Enzyme 6 GenBank ID Protein |
Not Available |
| Enzyme 6 UniProtKB/Swiss-Prot ID |
B3KTP0  |
| Enzyme 6 UniProtKB/Swiss-Prot Entry Name |
B3KTP0_HUMAN  |
| Enzyme 6 PDB ID |
Not Available |
| Enzyme 6 Cellular Location |
Not Available |
| Enzyme 6 Gene Sequence |
Not Available |
| Enzyme 6 GenBank Gene ID |
AK095873  |
| Enzyme 6 GeneCard ID |
B3KTP0  |
| Enzyme 6 GenAtlas ID |
Not Available |
| Enzyme 6 HGNC ID |
Not Available |
| Enzyme 6 Chromosome Location |
Not Available |
| Enzyme 6 Locus |
Not Available |
| Enzyme 6 SNPs |
SNPJam Report  |
| Enzyme 6 General References |
Not Available |
| Enzyme 6 Metabolite References |
Not Available |