Hmdb loader
Identification
HMDB Protein ID HMDBP01089
Secondary Accession Numbers
  • 6378
Name Ectonucleotide pyrophosphatase/phosphodiesterase family member 7
Synonyms
  1. Alk-SMase
  2. Alkaline sphingomyelin phosphodiesterase
  3. E-NPP 7
  4. Intestinal alkaline sphingomyelinase
  5. NPP-7
Gene Name ENPP7
Protein Type Unknown
Biological Properties
General Function Involved in catalytic activity
Specific Function Converts sphingomyelin to ceramide. Also has phospholipase C activity toward palmitoyl lyso-phosphocholine. Does not appear to have nucleotide pyrophosphatase activity.
Pathways
  • Fabry disease
  • Gaucher Disease
  • Globoid Cell Leukodystrophy
  • Krabbe disease
  • Metachromatic Leukodystrophy (MLD)
  • sphingolipid metabolism
  • Starch and sucrose metabolism
Reactions
Sphingomyelin + Water → N-acylsphingosine + Phosphorylcholine details
Sphingomyelin + Water → N-Acylsphingosine + Phosphorylcholine details
GO Classification
Biological Process
sphingomyelin metabolic process
negative regulation of DNA replication
negative regulation of cell proliferation
glycosphingolipid metabolic process
Cellular Component
plasma membrane
Golgi apparatus
microvillus
integral to membrane
Function
catalytic activity
Molecular Function
sphingomyelin phosphodiesterase activity
Process
metabolic process
Cellular Location
  1. Membrane
  2. Single-pass type I membrane protein (Potential)
Gene Properties
Chromosome Location 17
Locus 17q25.3
SNPs ENPP7
Gene Sequence
>1377 bp
ATGAGAGGCCTGGCCGTCCTCCTCACTGTGGCTCTGGCCACGCTCCTGGCTCCCGGGGCC
GGAGCACCGGTACAAAGTCAGGGCTCCCAGAACAAGCTGCTCCTGGTGTCCTTCGACGGC
TTCCGCTGGAACTACGACCAGGATGTGGACACCCCCAACCTGGACGCCATGGCCCGAGAC
GGGGTGAAGGCACGCTACATGACCCCCGCCTTTGTCACCATGACCAGCCCCTGCCACTTC
ACCCTGGTCACCGGCAAATATATCGAGAACCACGGGGTGGTTCACAACATGTACTACAAC
ACCACCAGCAAGGTGAAGCTGCCCTACCACGCCACGCTGGGCATCCAGAGGTGGTGGGAC
AACGGCAGCGTGCCCATCTGGATCACAGCCCAGAGGCAGGGCCTGAGGGCTGGCTCCTTC
TTCTACCCGGGCGGGAACGTCACCTACCAAGGGGTGGCTGTGACGCGGAGCCGGAAAGAA
GGCATCGCACACAACTACAAAAATGAGACGGAGTGGAGAGCGAACATCGACACAGTGATG
GCGTGGTTCACAGAGGAGGACCTGGATCTGGTCACACTCTACTTCGGGGAGCCGGACTCC
ACGGGCCACAGGTACGGCCCCGAGTCCCCGGAGAGGAGGGAGATGGTGCGGCAGGTGGAC
CGGACCGTGGGCTACCTCCGGGAGAGCATCGCGCGCAACCACCTCACAGACCGCCTCAAC
CTGATCATCACATCCGACCACGGCATGACGACCGTGGACAAACGGGCTGGCGACCTGGTT
GAATTCCACAAGTTCCCCAACTTCACCTTCCGGGACATCGAGTTTGAGCTCCTGGACTAC
GGACCAAACGGGATGCTGCTCCCTAAAGAAGGGAGGCTGGAGAAGGTGTACGATGCCCTC
AAGGACGCCCACCCCAAGCTCCACGTCTACAAGAAGGAGGCGTTCCCCGAGGCCTTCCAC
TACGCCAACAACCCCAGGGTCACACCCCTGCTGATGTACAGCGACCTTGGCTACGTCATC
CATGGGAGAATTAACGTCCAGTTCAACAATGGGGAGCACGGCTTTGACAACAAGGACATG
GACATGAAGACCATCTTCCGCGCTGTGGGCCCTAGCTTCAGGGCGGGCCTGGAGGTGGAG
CCCTTTGAGAGCGTCCACGTGTACGAGCTCATGTGCCGGCTGCTGGGCATCGTGCCCGAG
GCCAACGATGGGCACCTAGCTACTCTGCTGCCCATGCTGCACACAGAATCTGCTCTTCCG
CCTGATGGAAGGCCTACTCTCCTGCCCAAGGGAAGATCTGCTCTCCCGCCCAGCAGCAGG
CCCCTCCTCGTGATGGGACTGCTGGGGACCGTGATTCTTCTGTCTGAGGTCGCATAA
Protein Properties
Number of Residues 458
Molecular Weight 51493.415
Theoretical pI 6.883
Pfam Domain Function
Signals Not Available
Transmembrane Regions Not Available
Protein Sequence
>Ectonucleotide pyrophosphatase/phosphodiesterase family member 7
MRGLAVLLTVALATLLAPGAGAPVQSQGSQNKLLLVSFDGFRWNYDQDVDTPNLDAMARD
GVKARYMTPAFVTMTSPCHFTLVTGKYIENHGVVHNMYYNTTSKVKLPYHATLGIQRWWD
NGSVPIWITAQRQGLRAGSFFYPGGNVTYQGVAVTRSRKEGIAHNYKNETEWRANIDTVM
AWFTEEDLDLVTLYFGEPDSTGHRYGPESPERREMVRQVDRTVGYLRESIARNHLTDRLN
LIITSDHGMTTVDKRAGDLVEFHKFPNFTFRDIEFELLDYGPNGMLLPKEGRLEKVYDAL
KDAHPKLHVYKKEAFPEAFHYANNPRVTPLLMYSDLGYVIHGRINVQFNNGEHGFDNKDM
DMKTIFRAVGPSFRAGLEVEPFESVHVYELMCRLLGIVPEANDGHLATLLPMLHTESALP
PDGRPTLLPKGRSALPPSSRPLLVMGLLGTVILLSEVA
GenBank ID Protein 45545421
UniProtKB/Swiss-Prot ID Q6UWV6
UniProtKB/Swiss-Prot Entry Name ENPP7_HUMAN
PDB IDs Not Available
GenBank Gene ID NM_178543.3
GeneCard ID ENPP7
GenAtlas ID ENPP7
HGNC ID HGNC:23764
References
General References
  1. Chen R, Jiang X, Sun D, Han G, Wang F, Ye M, Wang L, Zou H: Glycoproteomics analysis of human liver tissue by combination of multiple enzyme digestion and hydrazide chemistry. J Proteome Res. 2009 Feb;8(2):651-61. doi: 10.1021/pr8008012. [PubMed:19159218 ]
  2. Ota T, Suzuki Y, Nishikawa T, Otsuki T, Sugiyama T, Irie R, Wakamatsu A, Hayashi K, Sato H, Nagai K, Kimura K, Makita H, Sekine M, Obayashi M, Nishi T, Shibahara T, Tanaka T, Ishii S, Yamamoto J, Saito K, Kawai Y, Isono Y, Nakamura Y, Nagahari K, Murakami K, Yasuda T, Iwayanagi T, Wagatsuma M, Shiratori A, Sudo H, Hosoiri T, Kaku Y, Kodaira H, Kondo H, Sugawara M, Takahashi M, Kanda K, Yokoi T, Furuya T, Kikkawa E, Omura Y, Abe K, Kamihara K, Katsuta N, Sato K, Tanikawa M, Yamazaki M, Ninomiya K, Ishibashi T, Yamashita H, Murakawa K, Fujimori K, Tanai H, Kimata M, Watanabe M, Hiraoka S, Chiba Y, Ishida S, Ono Y, Takiguchi S, Watanabe S, Yosida M, Hotuta T, Kusano J, Kanehori K, Takahashi-Fujii A, Hara H, Tanase TO, Nomura Y, Togiya S, Komai F, Hara R, Takeuchi K, Arita M, Imose N, Musashino K, Yuuki H, Oshima A, Sasaki N, Aotsuka S, Yoshikawa Y, Matsunawa H, Ichihara T, Shiohata N, Sano S, Moriya S, Momiyama H, Satoh N, Takami S, Terashima Y, Suzuki O, Nakagawa S, Senoh A, Mizoguchi H, Goto Y, Shimizu F, Wakebe H, Hishigaki H, Watanabe T, Sugiyama A, Takemoto M, Kawakami B, Yamazaki M, Watanabe K, Kumagai A, Itakura S, Fukuzumi Y, Fujimori Y, Komiyama M, Tashiro H, Tanigami A, Fujiwara T, Ono T, Yamada K, Fujii Y, Ozaki K, Hirao M, Ohmori Y, Kawabata A, Hikiji T, Kobatake N, Inagaki H, Ikema Y, Okamoto S, Okitani R, Kawakami T, Noguchi S, Itoh T, Shigeta K, Senba T, Matsumura K, Nakajima Y, Mizuno T, Morinaga M, Sasaki M, Togashi T, Oyama M, Hata H, Watanabe M, Komatsu T, Mizushima-Sugano J, Satoh T, Shirai Y, Takahashi Y, Nakagawa K, Okumura K, Nagase T, Nomura N, Kikuchi H, Masuho Y, Yamashita R, Nakai K, Yada T, Nakamura Y, Ohara O, Isogai T, Sugano S: Complete sequencing and characterization of 21,243 full-length human cDNAs. Nat Genet. 2004 Jan;36(1):40-5. Epub 2003 Dec 21. [PubMed:14702039 ]
  3. Gerhard DS, Wagner L, Feingold EA, Shenmen CM, Grouse LH, Schuler G, Klein SL, Old S, Rasooly R, Good P, Guyer M, Peck AM, Derge JG, Lipman D, Collins FS, Jang W, Sherry S, Feolo M, Misquitta L, Lee E, Rotmistrovsky K, Greenhut SF, Schaefer CF, Buetow K, Bonner TI, Haussler D, Kent J, Kiekhaus M, Furey T, Brent M, Prange C, Schreiber K, Shapiro N, Bhat NK, Hopkins RF, Hsie F, Driscoll T, Soares MB, Casavant TL, Scheetz TE, Brown-stein MJ, Usdin TB, Toshiyuki S, Carninci P, Piao Y, Dudekula DB, Ko MS, Kawakami K, Suzuki Y, Sugano S, Gruber CE, Smith MR, Simmons B, Moore T, Waterman R, Johnson SL, Ruan Y, Wei CL, Mathavan S, Gunaratne PH, Wu J, Garcia AM, Hulyk SW, Fuh E, Yuan Y, Sneed A, Kowis C, Hodgson A, Muzny DM, McPherson J, Gibbs RA, Fahey J, Helton E, Ketteman M, Madan A, Rodrigues S, Sanchez A, Whiting M, Madari A, Young AC, Wetherby KD, Granite SJ, Kwong PN, Brinkley CP, Pearson RL, Bouffard GG, Blakesly RW, Green ED, Dickson MC, Rodriguez AC, Grimwood J, Schmutz J, Myers RM, Butterfield YS, Griffith M, Griffith OL, Krzywinski MI, Liao N, Morin R, Palmquist D, Petrescu AS, Skalska U, Smailus DE, Stott JM, Schnerch A, Schein JE, Jones SJ, Holt RA, Baross A, Marra MA, Clifton S, Makowski KA, Bosak S, Malek J: The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC). Genome Res. 2004 Oct;14(10B):2121-7. [PubMed:15489334 ]
  4. Clark HF, Gurney AL, Abaya E, Baker K, Baldwin D, Brush J, Chen J, Chow B, Chui C, Crowley C, Currell B, Deuel B, Dowd P, Eaton D, Foster J, Grimaldi C, Gu Q, Hass PE, Heldens S, Huang A, Kim HS, Klimowski L, Jin Y, Johnson S, Lee J, Lewis L, Liao D, Mark M, Robbie E, Sanchez C, Schoenfeld J, Seshagiri S, Simmons L, Singh J, Smith V, Stinson J, Vagts A, Vandlen R, Watanabe C, Wieand D, Woods K, Xie MH, Yansura D, Yi S, Yu G, Yuan J, Zhang M, Zhang Z, Goddard A, Wood WI, Godowski P, Gray A: The secreted protein discovery initiative (SPDI), a large-scale effort to identify novel human secreted and transmembrane proteins: a bioinformatics assessment. Genome Res. 2003 Oct;13(10):2265-70. Epub 2003 Sep 15. [PubMed:12975309 ]
  5. Zhang Z, Henzel WJ: Signal peptide prediction based on analysis of experimentally verified cleavage sites. Protein Sci. 2004 Oct;13(10):2819-24. Epub 2004 Aug 31. [PubMed:15340161 ]
  6. Duan RD, Bergman T, Xu N, Wu J, Cheng Y, Duan J, Nelander S, Palmberg C, Nilsson A: Identification of human intestinal alkaline sphingomyelinase as a novel ecto-enzyme related to the nucleotide phosphodiesterase family. J Biol Chem. 2003 Oct 3;278(40):38528-36. Epub 2003 Jul 28. [PubMed:12885774 ]
  7. Duan RD, Cheng Y, Hansen G, Hertervig E, Liu JJ, Syk I, Sjostrom H, Nilsson A: Purification, localization, and expression of human intestinal alkaline sphingomyelinase. J Lipid Res. 2003 Jun;44(6):1241-50. Epub 2003 Apr 1. [PubMed:12671034 ]
  8. Wu J, Cheng Y, Nilsson A, Duan RD: Identification of one exon deletion of intestinal alkaline sphingomyelinase in colon cancer HT-29 cells and a differentiation-related expression of the wild-type enzyme in Caco-2 cells. Carcinogenesis. 2004 Aug;25(8):1327-33. Epub 2004 Mar 11. [PubMed:15016655 ]
  9. Wu J, Hansen GH, Nilsson A, Duan RD: Functional studies of human intestinal alkaline sphingomyelinase by deglycosylation and mutagenesis. Biochem J. 2005 Feb 15;386(Pt 1):153-60. [PubMed:15458386 ]