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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2005-11-16 15:48:42 UTC
Update Date2021-09-14 15:18:07 UTC
HMDB IDHMDB0001081
Secondary Accession Numbers
Metabolite Identification
Common Name(N-acetylneuraminosyl(a2-6)lactosamine)
Description

(N-acetylneuraminosyl(alpha2-6)lactosamine) is widely distributed among tissues and is involved in biological processes such as the regulation of the immune response and the progression of colon cancer. Sialylation represents one of the most frequently occurring terminations of the oligosaccharide chains of glycoproteins and glycolipids. Sialic acid is commonly found alpha,6-linked to N-acetylgalactosamine (GalNAc). The biosynthesis of the linkage is mediated by a member of the sialyltransferase family, the beta-galactoside alpha,6-sialyltransferase (EC 2.4.99.1, ST6Gal.I). Although expressed by a single gene, this enzyme shows a complex pattern of regulation which allows its tissue- and stage-specific modulation. (PMID 11425186 )

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6'-Sialyllactosamine is an oligosaccharide found in human milk. Oligosaccharides in human milk inhibit enteric pathogens in vitro and in vivo. (PMID:10683228 )

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Structure
Thumb
Synonyms
Chemical FormulaC25H42N2O19
Average Molecular Weight674.603
Monoisotopic Molecular Weight674.238177172
IUPAC Name(2R,4S,5R,6R)-5-acetamido-2-{[(2R,3R,4S,5R,6S)-6-{[(2R,3S,4R,5R,6R)-5-acetamido-4,6-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy}-3,4,5-trihydroxyoxan-2-yl]methoxy}-4-hydroxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylic acid
Traditional Name6-sialyllactosamine
CAS Registry Number64364-50-7
SMILES
[H][C@]1(O[C@@](C[C@H](O)[C@H]1NC(C)=O)(OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](NC(C)=O)[C@H](O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@H]1O)C(O)=O)[C@H](O)[C@H](O)CO
InChI Identifier
InChI=1S/C25H42N2O19/c1-7(30)26-13-9(32)3-25(24(40)41,46-21(13)15(34)10(33)4-28)42-6-12-16(35)18(37)19(38)23(44-12)45-20-11(5-29)43-22(39)14(17(20)36)27-8(2)31/h9-23,28-29,32-39H,3-6H2,1-2H3,(H,26,30)(H,27,31)(H,40,41)/t9-,10+,11+,12+,13+,14+,15+,16-,17+,18-,19+,20+,21+,22+,23-,25+/m0/s1
InChI KeyRPSBVJXBTXEJJG-LURNZOHQSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as neuraminic acids. These are carbohydrate derivatives containing a neuraminic acid moiety.
KingdomOrganic compounds
Super ClassOrganic oxygen compounds
ClassOrganooxygen compounds
Sub ClassCarbohydrates and carbohydrate conjugates
Direct ParentNeuraminic acids
Alternative Parents
Substituents
  • Neuraminic acid
  • N-acyl-alpha-hexosamine
  • C-glucuronide
  • C-glycosyl compound
  • Disaccharide
  • Glycosyl compound
  • O-glycosyl compound
  • Ketal
  • Pyran
  • Oxane
  • Hemiacetal
  • Secondary alcohol
  • Acetal
  • Carboximidic acid
  • Carboximidic acid derivative
  • Carboxylic acid derivative
  • Carboxylic acid
  • Oxacycle
  • Monocarboxylic acid or derivatives
  • Organoheterocyclic compound
  • Organic 1,3-dipolar compound
  • Polyol
  • Propargyl-type 1,3-dipolar organic compound
  • Hydrocarbon derivative
  • Carbonyl group
  • Alcohol
  • Organic nitrogen compound
  • Organopnictogen compound
  • Organonitrogen compound
  • Primary alcohol
  • Organic oxide
  • Aliphatic heteromonocyclic compound
Molecular FrameworkAliphatic heteromonocyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot Available
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
Predicted Chromatographic Properties
Spectra
Biological Properties
Cellular Locations
  • Cytoplasm (predicted from logP)
Biospecimen Locations
  • Breast Milk
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
Breast MilkDetected and Quantified250.2962012 uMAdult (>18 years old)FemaleNormal details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB022413
KNApSAcK IDNot Available
Chemspider ID111381
KEGG Compound IDC04886
BioCyc IDALPHA-N-ACETYLNEURAMINYL-26-BETA
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem CompoundNot Available
PDB IDNot Available
ChEBI ID17725
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceDall'Olio F The sialyl-alpha2,6-lactosaminyl-structure: biosynthesis and functional role. Glycoconjugate journal (2000), 17(10), 669-76.
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Dall'Olio F: The sialyl-alpha2,6-lactosaminyl-structure: biosynthesis and functional role. Glycoconj J. 2000 Oct;17(10):669-76. [PubMed:11425186 ]
  2. Huynh QK, Shailubhai K, Boddupalli H, Yu HH, Broschat KO, Jacob GS: Isolation and characterization from porcine serum of a soluble sulfotransferase responsible for 6-O-sulfation of the galactose residue in 2'-fucosyllactose: implications in the synthesis of the ligand for L-selectin. Glycoconj J. 1999 Jul;16(7):357-63. [PubMed:10619708 ]
  3. Manzella SM, Dharmesh SM, Cohick CB, Soares MJ, Baenziger JU: Developmental regulation of a pregnancy-specific oligosaccharide structure, NeuAcalpha2,6GalNAcbeta1,4GlcNAc, on select members of the rat placental prolactin family. J Biol Chem. 1997 Feb 21;272(8):4775-82. [PubMed:9030532 ]
  4. Britten CJ, McDowell W, Kelly VA, De Vries T, Van den Eijnden DH, Bird MI: Fucosylation of sialyllactosamine chains by the human leukocyte alpha 3 fucosyltransferase; FucT-VII. Biochem Soc Trans. 1997 Aug;25(3):425S. [PubMed:9388652 ]
  5. Muthing J, Meisen I, Bulau P, Langer M, Witthohn K, Lentzen H, Neumann U, Peter-Katalinic J: Mistletoe lectin I is a sialic acid-specific lectin with strict preference to gangliosides and glycoproteins with terminal Neu5Ac alpha 2-6Gal beta 1-4GlcNAc residues. Biochemistry. 2004 Mar 23;43(11):2996-3007. [PubMed:15023051 ]
  6. Toma V, Zuber C, Winter HC, Goldstein IJ, Roth J: Application of a lectin from the mushroom Polysporus squamosus for the histochemical detection of the NeuAcalpha2,6Galbeta1,4Glc/GlcNAc sequence of N-linked oligosaccharides: a comparison with the Sambucus nigra lectin. Histochem Cell Biol. 2001 Aug;116(2):183-93. [PubMed:11685546 ]
  7. Shen Z, Warren CD, Newburg DS: High-performance capillary electrophoresis of sialylated oligosaccharides of human milk. Anal Biochem. 2000 Mar 1;279(1):37-45. [PubMed:10683228 ]

Enzymes

General function:
Not Available
Specific function:
Transfers sialic acid from the donor of substrate CMP-sialic acid to galactose containing acceptor substrates.
Gene Name:
ST6GAL1
Uniprot ID:
P15907
Molecular weight:
46604.235
Reactions
Cytidine 5'-monophosphate-N-acetylneuraminic acid + beta-D-galactosyl-1,4-N-acetyl-beta-D-glucosamine → Cytidine monophosphate + (N-acetylneuraminosyl(a2-6)lactosamine)details
General function:
Not Available
Specific function:
Transfers sialic acid from the donor of substrate CMP-sialic acid to galactose containing acceptor substrates. Has alpha-2,6-sialyltransferase activity toward oligosaccharides that have the Gal-beta-1,4-GlcNAc sequence at the non-reducing end of their carbohydrate groups, but it has weak or no activities toward glycoproteins and glycolipids.
Gene Name:
ST6GAL2
Uniprot ID:
Q96JF0
Molecular weight:
60157.39
Reactions
Cytidine 5'-monophosphate-N-acetylneuraminic acid + beta-D-galactosyl-1,4-N-acetyl-beta-D-glucosamine → Cytidine monophosphate + (N-acetylneuraminosyl(a2-6)lactosamine)details