ASpdb: an integrative knowledgebase of human protein isoforms from experimental and AI-predicted structures
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Center for Computational Systems Medicine
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Protein Summary

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AS Summary

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Protein Functional Features

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Gene Isoform Structures and Expression Levels

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Protein Structures

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pLDDT Score Distribution

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Ramachandran Plot of Protein Structures

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Potential Active Site Information

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Protein Structure and Feature Comparision

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Protein-Protein Interaction

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Related Drugs

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Related Diseases

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Clinically Important Variants

Protein:ENPP2

Protein Summary

check button Gene summary
Gene name: ENPP2
ASpdb.0 ID: 5168
Gene
Gene symbol

ENPP2

Gene ID

5168

Gene nameectonucleotide pyrophosphatase/phosphodiesterase 2
SynonymsATX|ATX-X|AUTOTAXIN|LysoPLD|NPP2|PD-IALPHA|PDNP2
Cytomap

8q24.12

Type of geneprotein-coding
Descriptionectonucleotide pyrophosphatase/phosphodiesterase family member 2E-NPP 2autotaxin-textracellular lysophospholipase Dphosphodiesterase I/nucleotide pyrophosphatase 2plasma lysophospholipase D
Modification date20240411
UniProtAcc

Q13822


check button Gene ontology of this gene with evidence of Inferred from Direct Assay (IDA) from Entrez
PartnerGeneGO IDGO termPubMed ID
GeneENPP2

GO:0004622

lysophospholipase activity

12354767|14500380|15280042|21240271|21393252|26371182

GeneENPP2

GO:0005509

calcium ion binding

26371182

GeneENPP2

GO:0005615

extracellular space

15280042|26371182

GeneENPP2

GO:0008270

zinc ion binding

26371182

GeneENPP2

GO:0009395

phospholipid catabolic process

15280042|26371182

GeneENPP2

GO:0030149

sphingolipid catabolic process

14500380

GeneENPP2

GO:0030334

regulation of cell migration

1733949

GeneENPP2

GO:0034638

phosphatidylcholine catabolic process

21240271

GeneENPP2

GO:0050731

positive regulation of peptidyl-tyrosine phosphorylation

18054784



AS Summary

check button Information of the canonical protein with experimentally identified structure from PDB (2023).
UniProt AccFile namePDB IDMethodResolutionChainStartEnd
Q13822-1Q13822-1_5mhp_A.pdb5MHPX-ray2.43A52860

check button ASpdb's canonical and alternatively spliced isoform information.
accession_idgene_namecanonical_idalternative_idcanonical_lengthalternative_lengthcanonical_startcanonical_endtypeoriginalSEQvariationSEQalternative_startalternative_end
Q13822ENPP2Q13822-1Q13822-2863915324324SubstitutionEEESSYGSPFTPAKRPKRKVAPKRRQERPVAPPKKRRRKIHRMDHYAAETRQDK324376
Q13822ENPP2Q13822-1Q13822-3863888593593SubstitutionEEAETRKFRGSRNENKENINGNFEPRK593618

check buttonMultiple sequence alignment of our canonical and alternatively spliced ENPP2

check button Matched gene isoform IDs with Ensembl and RefSeq of our canonical and alternative spliced genes of ENPP2
UniProt-idENSGENSTENSP
Q13822-1ENSG00000136960.13ENST00000075322.11ENSP00000075322.6
Q13822-2ENSG00000136960.13ENST00000259486.10ENSP00000259486.6
Q13822-3ENSG00000136960.13ENST00000522826.5ENSP00000428291.1

UniProt-idNM IDNP ID
Q13822-1NM_001040092.2NP_001035181.1
Q13822-2NM_006209.4NP_006200.3
Q13822-3NM_001130863.2NP_001124335.1

check buttonAmino acid sequences of our canonical and alternatively spliced ENPP2
accession_idProtein sequence
Q13822-1MARRSSFQSCQIISLFTFAVGVNICLGFTAHRIKRAEGWEEGPPTVLSDSPWTNISGSCKGRCFELQEAGPPDCRCDNLCKSYTSCCHDF
DELCLKTARGWECTKDRCGEVRNEENACHCSEDCLARGDCCTNYQVVCKGESHWVDDDCEEIKAAECPAGFVRPPLIIFSVDGFRASYMK
KGSKVMPNIEKLRSCGTHSPYMRPVYPTKTFPNLYTLATGLYPESHGIVGNSMYDPVFDATFHLRGREKFNHRWWGGQPLWITATKQGVK
AGTFFWSVVIPHERRILTILQWLTLPDHERPSVYAFYSEQPDFSGHKYGPFGPEMTNPLREIDKIVGQLMDGLKQLKLHRCVNVIFVGDH
GMEDVTCDRTEFLSNYLTNVDDITLVPGTLGRIRSKFSNNAKYDPKAIIANLTCKKPDQHFKPYLKQHLPKRLHYANNRRIEDIHLLVER
RWHVARKPLDVYKKPSGKCFFQGDHGFDNKVNSMQTVFVGYGSTFKYKTKVPPFENIELYNVMCDLLGLKPAPNNGTHGSLNHLLRTNTF
RPTMPEEVTRPNYPGIMYLQSDFDLGCTCDDKVEPKNKLDELNKRLHTKGSTEERHLLYGRPAVLYRTRYDILYHTDFESGYSEIFLMPL
WTSYTVSKQAEVSSVPDHLTSCVRPDVRVSPSFSQNCLAYKNDKQMSYGFLFPPYLSSSPEAKYDAFLVTNMVPMYPAFKRVWNYFQRVL
VKKYASERNGVNVISGPIFDYDYDGLHDTEDKIKQYVEGSSIPVPTHYYSIITSCLDFTQPADKCDGPLSVSSFILPHRPDNEESCNSSE
Q13822-2MARRSSFQSCQIISLFTFAVGVNICLGFTAHRIKRAEGWEEGPPTVLSDSPWTNISGSCKGRCFELQEAGPPDCRCDNLCKSYTSCCHDF
DELCLKTARGWECTKDRCGEVRNEENACHCSEDCLARGDCCTNYQVVCKGESHWVDDDCEEIKAAECPAGFVRPPLIIFSVDGFRASYMK
KGSKVMPNIEKLRSCGTHSPYMRPVYPTKTFPNLYTLATGLYPESHGIVGNSMYDPVFDATFHLRGREKFNHRWWGGQPLWITATKQGVK
AGTFFWSVVIPHERRILTILQWLTLPDHERPSVYAFYSEQPDFSGHKYGPFGPEESSYGSPFTPAKRPKRKVAPKRRQERPVAPPKKRRR
KIHRMDHYAAETRQDKMTNPLREIDKIVGQLMDGLKQLKLHRCVNVIFVGDHGMEDVTCDRTEFLSNYLTNVDDITLVPGTLGRIRSKFS
NNAKYDPKAIIANLTCKKPDQHFKPYLKQHLPKRLHYANNRRIEDIHLLVERRWHVARKPLDVYKKPSGKCFFQGDHGFDNKVNSMQTVF
VGYGSTFKYKTKVPPFENIELYNVMCDLLGLKPAPNNGTHGSLNHLLRTNTFRPTMPEEVTRPNYPGIMYLQSDFDLGCTCDDKVEPKNK
LDELNKRLHTKGSTEERHLLYGRPAVLYRTRYDILYHTDFESGYSEIFLMPLWTSYTVSKQAEVSSVPDHLTSCVRPDVRVSPSFSQNCL
AYKNDKQMSYGFLFPPYLSSSPEAKYDAFLVTNMVPMYPAFKRVWNYFQRVLVKKYASERNGVNVISGPIFDYDYDGLHDTEDKIKQYVE
GSSIPVPTHYYSIITSCLDFTQPADKCDGPLSVSSFILPHRPDNEESCNSSEDESKWVEELMKMHTARVRDIEHLTSLDFFRKTSRSYPE
Q13822-3MARRSSFQSCQIISLFTFAVGVNICLGFTAHRIKRAEGWEEGPPTVLSDSPWTNISGSCKGRCFELQEAGPPDCRCDNLCKSYTSCCHDF
DELCLKTARGWECTKDRCGEVRNEENACHCSEDCLARGDCCTNYQVVCKGESHWVDDDCEEIKAAECPAGFVRPPLIIFSVDGFRASYMK
KGSKVMPNIEKLRSCGTHSPYMRPVYPTKTFPNLYTLATGLYPESHGIVGNSMYDPVFDATFHLRGREKFNHRWWGGQPLWITATKQGVK
AGTFFWSVVIPHERRILTILQWLTLPDHERPSVYAFYSEQPDFSGHKYGPFGPEMTNPLREIDKIVGQLMDGLKQLKLHRCVNVIFVGDH
GMEDVTCDRTEFLSNYLTNVDDITLVPGTLGRIRSKFSNNAKYDPKAIIANLTCKKPDQHFKPYLKQHLPKRLHYANNRRIEDIHLLVER
RWHVARKPLDVYKKPSGKCFFQGDHGFDNKVNSMQTVFVGYGSTFKYKTKVPPFENIELYNVMCDLLGLKPAPNNGTHGSLNHLLRTNTF
RPTMPEEVTRPNYPGIMYLQSDFDLGCTCDDKVEPKNKLDELNKRLHTKGSTEAETRKFRGSRNENKENINGNFEPRKERHLLYGRPAVL
YRTRYDILYHTDFESGYSEIFLMPLWTSYTVSKQAEVSSVPDHLTSCVRPDVRVSPSFSQNCLAYKNDKQMSYGFLFPPYLSSSPEAKYD
AFLVTNMVPMYPAFKRVWNYFQRVLVKKYASERNGVNVISGPIFDYDYDGLHDTEDKIKQYVEGSSIPVPTHYYSIITSCLDFTQPADKC

Protein Functional Features

check buttonMain function of this protein. (from UniProt)
ENPP2 (go to UniProt):Q13822

check buttonRetention analysis result of protein across 39 protein features of UniProt such as six molecule processing features, 13 region features, four site features, six amino acid modification features, two natural variation features, five experimental info features, and 3 secondary structure features. Here, because of limited space for viewing, we only show the protein feature retention information belong to the 13 regional features. All retention annotation result can be downloaded at

download page

* Minus value of BPloci means that the break pointn is located before the CDS.
- Retained protein feature among the 13 regional features.
Accession_idSubsectionStartEndFuncitonal featureSplicing information


Gene Isoform Structures and Expression Levels for ENPP2

check buttonGene structures of our canonical and alternative spliced genes of ENPP2
* Click on the image to open the UCSC genome browser with custom track showing this image in a new window.
gene isoform structure of ENPP2

check button Expression levels of gene isoforms across GTEx.
gtex expression

check button Expression levels of gene isoforms across TCGA.
tcga expression


Protein Structures

check button PDB and CIF files of the predicted protein structures
* Here we show the 3D structure of the proteins using Mol*. AlphaFold produces a per-residue confidence score (pLDDT) between 0 and 100. Model confidence is shown from the pLDDT values per residue. pLDDT corresponds to the model’s prediction of its score on the local Distance Difference Test. It is a measure of local accuracy (from AlphfaFold website). To color code individual residues, we transformed individual PDB files into CIF format.
3D view using mol* of Q13822-1
3D view using mol* of Q13822-2
3D view using mol* of Q13822-3


pLDDT Score Distribution

check button pLDDT score distribution of the predicted protein structures from AlphaFold2
* AlphaFold produces a per-residue confidence score (pLDDT) between 0 and 100.
pLDDT distribution across the protein length of Q13822-1
all structure
pLDDT distribution across the protein length of Q13822-2
all structure
pLDDT distribution across the protein length of Q13822-3
all structure


Ramachandran Plot of Protein Structures


check button Ramachandran plot of the torsional angles - phi (φ)and psi (ψ) - of the residues (amino acids) contained in this protein peptide.
Ramachandran plot of Q13822-1
all structure

Potential Active Site Information


check button The potential binding sites of these proteins were identified using SiteMap, a module of the Schrodinger suite.
UniProt-idSite scoreSizeD scoreVolumeExposureEnclosureContactPhobicPhilicBalanceDon/AccResidues
Q13822-11.0982231.161751.170.60.7460.91.3870.6951.9941.04465,66,68,77,79,81,82,83,168,170,211,214,215,217,21
8,244,249,250,251,252,255,257,259,260,261,262,265,
268,270,271,272,273,274,275,276,277,278,305,306,30
7,513
Q13822-21.1252421.177814.6250.4620.7981.0431.4870.7422.0051.27865,66,68,75,77,78,79,82,83,168,170,210,211,214,215
,217,218,244,249,250,252,255,259,260,261,262,265,2
70,271,272,273,274,275,276,277,278,292,299,301,305
,306,307,565
Q13822-31.055260.9921282.1340.4080.7731.0130.5251.2630.4160.75130,31,32,33,34,35,36,37,38,39,41,44,45,46,47,50,17
2,207,209,210,230,231,232,233,234,240,241,243,244,
245,246,247,248,249,251,309,312,313,316,317,368,37
0,384,385,386,387,388,389,390,392,394,396,453,454,
455,456,460,461,462,464,467,468,469,470,471,472,47
3,474,475

Protein Structure and Feature Comparision


check button Protein Structure Comparision Using Template Modeling Scores (TM-score).
all structure

check button Protein Structure Comparision Visualization with mol*. between Canonical predicted structure (AF2)(orange) vs Canonical validated structure (PDB)(green)
3D view using mol* of Q13822-1_Q13822-1_5mhp_A.pdb

check button Protein Structure Comparision Visualization with mol*. between Canonical validated structure (PDB)(orange) vs Alternative predicted structure (AF2)(green)
3D view using mol* of Q13822-1_5mhp_A_Q13822-2.pdb
3D view using mol* of Q13822-1_5mhp_A_Q13822-3.pdb

check button Protein Structure Comparision Visualization with mol*. between Canonical predicted structure (AF2)(orange) vs Alternative predicted structure (AF2)(green)
3D view using mol* of Q13822-1_Q13822-2.pdb
3D view using mol* of Q13822-1_Q13822-3.pdb

check button Protein Feature Comparison of the protein sequendary structures among the protiens.
./stats/secondary_structure/figure/Q13822-1_vs_Q13822-2.png
all structure<
./stats/secondary_structure/figure/Q13822-1_vs_Q13822-3.png
all structure<

check button Protein Feature Comparison of the relative accessible surface area (ASA) among the protiens.
./stats/relative_asa/Q13822-1_vs_Q13822-2.png
all structure<
./stats/relative_asa/Q13822-1_vs_Q13822-3.png
all structure<


Protein-Protein Interaction


check button Interactors from UniProt.
Accession_idSubsectionStartEndFuncitonal featureSplicing information


check button Interactors from STRING.
Gene nameInteractors


Related Drugs to ENPP2


check button Drugs targeting this gene/protein.
(DrugBank)
UniProt accessionGene nameDrugBank IDDrug nameDrug groupActions

Related Diseases to ENPP2


check button Previous studies relating to the alternative splicing of ENPP2 and disease information from the MeSH term (PubMed)
GenePMIDTitleAbstractMeSH IDMeSH term


Clinically important variants in ENPP2


check button (ClinVar, 04/20/2024)
accession_iduniprot_idgene_nameTypeVariantClinical_significance