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Q5MY95

- ENTP8_HUMAN

UniProt

Q5MY95 - ENTP8_HUMAN

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Protein
Ectonucleoside triphosphate diphosphohydrolase 8
Gene
ENTPD8, UNQ2492/PRO5779
Organism
Homo sapiens (Human)
Status
Reviewed - Annotation score: 5 out of 5 - Experimental evidence at protein leveli

Functioni

Canalicular ectonucleoside NTPDase responsible for the main hepatic NTPDase activity. Ectonucleoside NTPDases catalyze the hydrolysis of gamma- and beta-phosphate residues of nucleotides, playing a central role in concentration of extracellular nucleotides. Has activity toward ATP, ADP, UTP and UDP, but not toward AMP.2 Publications

Catalytic activityi

A nucleoside 5'-triphosphate + 2 H2O = a nucleoside 5'-phosphate + 2 phosphate.2 Publications

Cofactori

Ca2+ or Mg2+. Has lower efficiency with Mg2+ By similarity.

Enzyme regulationi

Not inhibited by ARL 67156.1 Publication

Kineticsi

  1. KM=81 µM for ATP1 Publication
  2. KM=137 µM for ADP
  3. KM=480 µM for UTP
  4. KM=241 µM for UDP

Vmax=790 nmol/min/mg enzyme with ATP as substrate

Vmax=163 nmol/min/mg enzyme with ADP as substrate

Vmax=1100 nmol/min/mg enzyme with UTP as substrate

Vmax=110 nmol/min/mg enzyme with UDP as substrate

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Active sitei168 – 1681Proton acceptor By similarity

GO - Molecular functioni

  1. ATP binding Source: UniProtKB-KW
  2. metal ion binding Source: UniProtKB-KW
  3. nucleoside-diphosphatase activity Source: Ensembl
  4. nucleoside-triphosphatase activity Source: Ensembl

GO - Biological processi

  1. nucleoside diphosphate biosynthetic process Source: Ensembl
  2. nucleoside monophosphate biosynthetic process Source: Ensembl
Complete GO annotation...

Keywords - Molecular functioni

Hydrolase

Keywords - Ligandi

ATP-binding, Calcium, Magnesium, Metal-binding, Nucleotide-binding

Enzyme and pathway databases

SABIO-RKQ5MY95.

Names & Taxonomyi

Protein namesi
Recommended name:
Ectonucleoside triphosphate diphosphohydrolase 8 (EC:3.6.1.5)
Short name:
E-NTPDase 8
Short name:
NTPDase 8
Short name:
NTPDase8
Gene namesi
Name:ENTPD8
ORF Names:UNQ2492/PRO5779
OrganismiHomo sapiens (Human)
Taxonomic identifieri9606 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
ProteomesiUP000005640: Chromosome 9

Organism-specific databases

HGNCiHGNC:24860. ENTPD8.

Subcellular locationi

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Topological domaini1 – 88Cytoplasmic Reviewed prediction
Transmembranei9 – 2921Helical; Reviewed prediction
Add
BLAST
Topological domaini30 – 471442Extracellular Reviewed prediction
Add
BLAST
Transmembranei472 – 49221Helical; Reviewed prediction
Add
BLAST
Topological domaini493 – 4953Cytoplasmic Reviewed prediction

GO - Cellular componenti

  1. integral component of membrane Source: UniProtKB-KW
  2. plasma membrane Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Cell membrane, Membrane

Pathology & Biotechi

Organism-specific databases

PharmGKBiPA142671906.

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 495495Ectonucleoside triphosphate diphosphohydrolase 8
PRO_0000306882Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Glycosylationi67 – 671N-linked (GlcNAc...) Reviewed prediction
Disulfide bondi78 ↔ 102 By similarity
Disulfide bondi246 ↔ 292 By similarity
Glycosylationi304 – 3041N-linked (GlcNAc...) Reviewed prediction
Disulfide bondi329 ↔ 335 By similarity
Glycosylationi363 – 3631N-linked (GlcNAc...) Reviewed prediction
Disulfide bondi381 ↔ 403 By similarity

Post-translational modificationi

N-glycosylated.1 Publication

Keywords - PTMi

Disulfide bond, Glycoprotein

Proteomic databases

PaxDbiQ5MY95.
PRIDEiQ5MY95.

PTM databases

PhosphoSiteiQ5MY95.

Expressioni

Gene expression databases

ArrayExpressiQ5MY95.
BgeeiQ5MY95.
CleanExiHS_ENTPD8.
GenevestigatoriQ5MY95.

Organism-specific databases

HPAiHPA021509.

Interactioni

Protein-protein interaction databases

STRINGi9606.ENSP00000360561.

Structurei

3D structure databases

ProteinModelPortaliQ5MY95.
SMRiQ5MY95. Positions 41-458.

Family & Domainsi

Domaini

The transmembranous domains are involved in regulation of enzyme activity.1 Publication

Sequence similaritiesi

Belongs to the GDA1/CD39 NTPase family.

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiCOG5371.
HOGENOMiHOG000059572.
HOVERGENiHBG018982.
InParanoidiQ5MY95.
KOiK01510.
OMAiVDFWGAE.
OrthoDBiEOG754HPX.
PhylomeDBiQ5MY95.
TreeFamiTF332859.

Family and domain databases

InterProiIPR000407. GDA1_CD39_NTPase.
[Graphical view]
PANTHERiPTHR11782. PTHR11782. 1 hit.
PfamiPF01150. GDA1_CD39. 1 hit.
[Graphical view]
PROSITEiPS01238. GDA1_CD39_NTPASE. 1 hit.
[Graphical view]

Sequences (2)i

Sequence statusi: Complete.

This entry describes 2 isoformsi produced by alternative splicing. Align

Isoform 1 (identifier: Q5MY95-1) [UniParc]FASTAAdd to Basket

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide

MGLSRKEQVF LALLGASGVS GLTALILLLV EATSVLLPTD IKFGIVFDAG    50
SSHTSLFLYQ WLANKENGTG VVSQALACQV EGPGISSYTS NAAQAGESLQ 100
GCLEEALVLI PEAQHRKTPT FLGATAGMRL LSRKNSSQAR DIFAAVTQVL 150
GRSPVDFWGA ELLAGQAEGA FGWITVNYGL GTLVKYSFTG EWIQPPEEML 200
VGALDMGGAS TQITFVPGGP ILDKSTQADF RLYGSDYSVY THSYLCFGRD 250
QMLSRLLVGL VQSRPAALLR HPCYLSGYQT TLALGPLYES PCVHATPPLS 300
LPQNLTVEGT GNPGACVSAI RELFNFSSCQ GQEDCAFDGV YQPPLRGQFY 350
AFSNFYYTFH FLNLTSRQPL STVNATIWEF CQRPWKLVEA SYPGQDRWLR 400
DYCASGLYIL TLLHEGYGFS EETWPSLEFR KQAGGVDIGW TLGYMLNLTG 450
MIPADAPAQW RAESYGVWVA KVVFMVLALV AVVGAALVQL FWLQD 495
Length:495
Mass (Da):53,904
Last modified:October 2, 2007 - v2
Checksum:i030200E15F662D82
GO
Isoform 2 (identifier: Q5MY95-2) [UniParc]FASTAAdd to Basket

The sequence of this isoform differs from the canonical sequence as follows:
     351-387: Missing.

Show »
Length:458
Mass (Da):49,393
Checksum:iC2BEDCB65064B6B3
GO

Natural variant

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Natural varianti62 – 621L → P.4 Publications
Corresponds to variant rs6606582 [ dbSNP | Ensembl ].
VAR_035339
Natural varianti428 – 4281E → K.
Corresponds to variant rs61491031 [ dbSNP | Ensembl ].
VAR_061385

Alternative sequence

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Alternative sequencei351 – 38737Missing in isoform 2.
VSP_028559Add
BLAST

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
AY903953 Transcribed RNA. Translation: AAW83515.1.
AY903954 mRNA. Translation: AAW83516.1.
AY430414 mRNA. Translation: AAR04374.1.
AY359088 mRNA. Translation: AAQ89446.1.
BX322799 Genomic DNA. Translation: CAM24777.1.
BC141810 mRNA. Translation: AAI41811.1.
CCDSiCCDS43913.1. [Q5MY95-1]
CCDS7043.1. [Q5MY95-2]
RefSeqiNP_001028285.1. NM_001033113.1. [Q5MY95-1]
NP_940987.2. NM_198585.2. [Q5MY95-2]
UniGeneiHs.512562.

Genome annotation databases

EnsembliENST00000344119; ENSP00000344089; ENSG00000188833. [Q5MY95-2]
ENST00000371506; ENSP00000360561; ENSG00000188833. [Q5MY95-1]
ENST00000472938; ENSP00000420531; ENSG00000188833. [Q5MY95-1]
GeneIDi377841.
KEGGihsa:377841.
UCSCiuc004cmw.3. human. [Q5MY95-1]
uc004cmx.3. human. [Q5MY95-2]

Polymorphism databases

DMDMi158705943.

Keywords - Coding sequence diversityi

Alternative splicing, Polymorphism

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
AY903953 Transcribed RNA. Translation: AAW83515.1 .
AY903954 mRNA. Translation: AAW83516.1 .
AY430414 mRNA. Translation: AAR04374.1 .
AY359088 mRNA. Translation: AAQ89446.1 .
BX322799 Genomic DNA. Translation: CAM24777.1 .
BC141810 mRNA. Translation: AAI41811.1 .
CCDSi CCDS43913.1. [Q5MY95-1 ]
CCDS7043.1. [Q5MY95-2 ]
RefSeqi NP_001028285.1. NM_001033113.1. [Q5MY95-1 ]
NP_940987.2. NM_198585.2. [Q5MY95-2 ]
UniGenei Hs.512562.

3D structure databases

ProteinModelPortali Q5MY95.
SMRi Q5MY95. Positions 41-458.
ModBasei Search...
MobiDBi Search...

Protein-protein interaction databases

STRINGi 9606.ENSP00000360561.

Chemistry

BindingDBi Q5MY95.
ChEMBLi CHEMBL5338.

PTM databases

PhosphoSitei Q5MY95.

Polymorphism databases

DMDMi 158705943.

Proteomic databases

PaxDbi Q5MY95.
PRIDEi Q5MY95.

Protocols and materials databases

DNASUi 377841.
Structural Biology Knowledgebase Search...

Genome annotation databases

Ensembli ENST00000344119 ; ENSP00000344089 ; ENSG00000188833 . [Q5MY95-2 ]
ENST00000371506 ; ENSP00000360561 ; ENSG00000188833 . [Q5MY95-1 ]
ENST00000472938 ; ENSP00000420531 ; ENSG00000188833 . [Q5MY95-1 ]
GeneIDi 377841.
KEGGi hsa:377841.
UCSCi uc004cmw.3. human. [Q5MY95-1 ]
uc004cmx.3. human. [Q5MY95-2 ]

Organism-specific databases

CTDi 377841.
GeneCardsi GC09M140328.
HGNCi HGNC:24860. ENTPD8.
HPAi HPA021509.
neXtProti NX_Q5MY95.
PharmGKBi PA142671906.
GenAtlasi Search...

Phylogenomic databases

eggNOGi COG5371.
HOGENOMi HOG000059572.
HOVERGENi HBG018982.
InParanoidi Q5MY95.
KOi K01510.
OMAi VDFWGAE.
OrthoDBi EOG754HPX.
PhylomeDBi Q5MY95.
TreeFami TF332859.

Enzyme and pathway databases

SABIO-RK Q5MY95.

Miscellaneous databases

GenomeRNAii 377841.
NextBioi 100687.
PROi Q5MY95.

Gene expression databases

ArrayExpressi Q5MY95.
Bgeei Q5MY95.
CleanExi HS_ENTPD8.
Genevestigatori Q5MY95.

Family and domain databases

InterProi IPR000407. GDA1_CD39_NTPase.
[Graphical view ]
PANTHERi PTHR11782. PTHR11782. 1 hit.
Pfami PF01150. GDA1_CD39. 1 hit.
[Graphical view ]
PROSITEi PS01238. GDA1_CD39_NTPASE. 1 hit.
[Graphical view ]
ProtoNeti Search...

Publicationsi

« Hide 'large scale' publications
  1. "Molecular cloning and characterization of expressed human ecto-nucleoside triphosphate diphosphohydrolase 8 (E-NTPDase 8) and its soluble extracellular domain."
    Knowles A.F., Li C.
    Biochemistry 45:7323-7333(2006) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1), FUNCTION, ENZYME ACTIVITY, DOMAIN, GLYCOSYLATION, VARIANT PRO-62.
  2. "Cloning, purification, and identification of the liver canalicular ecto-ATPase as NTPDase8."
    Fausther M., Lecka J., Kukulski F., Levesque S.A., Pelletier J., Zimmermann H., Dranoff J.A., Sevigny J.
    Am. J. Physiol. 292:G785-G795(2007) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1), FUNCTION, ENZYME ACTIVITY, BIOPHYSICOCHEMICAL PROPERTIES, VARIANT PRO-62.
    Tissue: Liver.
  3. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 2), VARIANT PRO-62.
  4. "DNA sequence and analysis of human chromosome 9."
    Humphray S.J., Oliver K., Hunt A.R., Plumb R.W., Loveland J.E., Howe K.L., Andrews T.D., Searle S., Hunt S.E., Scott C.E., Jones M.C., Ainscough R., Almeida J.P., Ambrose K.D., Ashwell R.I.S., Babbage A.K., Babbage S., Bagguley C.L.
    , Bailey J., Banerjee R., Barker D.J., Barlow K.F., Bates K., Beasley H., Beasley O., Bird C.P., Bray-Allen S., Brown A.J., Brown J.Y., Burford D., Burrill W., Burton J., Carder C., Carter N.P., Chapman J.C., Chen Y., Clarke G., Clark S.Y., Clee C.M., Clegg S., Collier R.E., Corby N., Crosier M., Cummings A.T., Davies J., Dhami P., Dunn M., Dutta I., Dyer L.W., Earthrowl M.E., Faulkner L., Fleming C.J., Frankish A., Frankland J.A., French L., Fricker D.G., Garner P., Garnett J., Ghori J., Gilbert J.G.R., Glison C., Grafham D.V., Gribble S., Griffiths C., Griffiths-Jones S., Grocock R., Guy J., Hall R.E., Hammond S., Harley J.L., Harrison E.S.I., Hart E.A., Heath P.D., Henderson C.D., Hopkins B.L., Howard P.J., Howden P.J., Huckle E., Johnson C., Johnson D., Joy A.A., Kay M., Keenan S., Kershaw J.K., Kimberley A.M., King A., Knights A., Laird G.K., Langford C., Lawlor S., Leongamornlert D.A., Leversha M., Lloyd C., Lloyd D.M., Lovell J., Martin S., Mashreghi-Mohammadi M., Matthews L., McLaren S., McLay K.E., McMurray A., Milne S., Nickerson T., Nisbett J., Nordsiek G., Pearce A.V., Peck A.I., Porter K.M., Pandian R., Pelan S., Phillimore B., Povey S., Ramsey Y., Rand V., Scharfe M., Sehra H.K., Shownkeen R., Sims S.K., Skuce C.D., Smith M., Steward C.A., Swarbreck D., Sycamore N., Tester J., Thorpe A., Tracey A., Tromans A., Thomas D.W., Wall M., Wallis J.M., West A.P., Whitehead S.L., Willey D.L., Williams S.A., Wilming L., Wray P.W., Young L., Ashurst J.L., Coulson A., Blocker H., Durbin R.M., Sulston J.E., Hubbard T., Jackson M.J., Bentley D.R., Beck S., Rogers J., Dunham I.
    Nature 429:369-374(2004) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
  5. "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)."
    The MGC Project Team
    Genome Res. 14:2121-2127(2004) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 2), VARIANT PRO-62.
  6. "Specificity of the ecto-ATPase inhibitor ARL 67156 on human and mouse ectonucleotidases."
    Levesque S.A., Lavoie E.G., Lecka J., Bigonnesse F., Sevigny J.
    Br. J. Pharmacol. 152:141-150(2007) [PubMed] [Europe PMC] [Abstract]
    Cited for: ENZYME REGULATION.

Entry informationi

Entry nameiENTP8_HUMAN
AccessioniPrimary (citable) accession number: Q5MY95
Secondary accession number(s): A2BG17, Q6UVZ0
Entry historyi
Integrated into UniProtKB/Swiss-Prot: October 2, 2007
Last sequence update: October 2, 2007
Last modified: July 9, 2014
This is version 84 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. Human chromosome 9
    Human chromosome 9: entries, gene names and cross-references to MIM
  2. Human entries with polymorphisms or disease mutations
    List of human entries with polymorphisms or disease mutations
  3. Human polymorphisms and disease mutations
    Index of human polymorphisms and disease mutations
  4. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

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