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:XPNPEP1

Protein Summary

check button Gene summary
Gene name: XPNPEP1
ASpdb.0 ID: 7511
Gene
Gene symbol

XPNPEP1

Gene ID

7511

Gene nameX-prolyl aminopeptidase 1
SynonymsAPP1|SAMP|XPNPEP|XPNPEPL|XPNPEPL1
Cytomap

10q25.1

Type of geneprotein-coding
Descriptionxaa-Pro aminopeptidase 1X-Pro aminopeptidase 1X-prolyl aminopeptidase (aminopeptidase P) 1, solubleX-prolyl aminopeptidase 1, solubleaminoacylproline aminopeptidaseaminopeptidase P, cytosoliccytosolic aminopeptidase Psoluble aminopeptidase P
Modification date20240407
UniProtAcc

Q9NQW7


check button Gene ontology of this gene with evidence of Inferred from Direct Assay (IDA) from Entrez
PartnerGeneGO IDGO termPubMed ID
GeneXPNPEP1

GO:0004177

aminopeptidase activity

11106490

GeneXPNPEP1

GO:0005829

cytosol

11106490

GeneXPNPEP1

GO:0005829

cytosol

-

GeneXPNPEP1

GO:0006508

proteolysis

11106490

GeneXPNPEP1

GO:0010815

bradykinin catabolic process

18515364

GeneXPNPEP1

GO:0030145

manganese ion binding

18515364

GeneXPNPEP1

GO:0043069

negative regulation of programmed cell death

35165443

GeneXPNPEP1

GO:0070006

metalloaminopeptidase activity

18515364|35165443



AS Summary

check button Information of the canonical protein with experimentally identified structure from PDB (2023).
UniProt AccFile namePDB IDMethodResolutionChainStartEnd
Q9NQW7-1Q9NQW7-1_3ctz_A.pdb3CTZX-ray1.6A3619

check button ASpdb's canonical and alternatively spliced isoform information.
accession_idgene_namecanonical_idalternative_idcanonical_lengthalternative_lengthcanonical_startcanonical_endtypeoriginalSEQvariationSEQalternative_startalternative_end
Q9NQW7XPNPEP1Q9NQW7-1Q9NQW7-2623599398421Deletionnonenone397397
Q9NQW7XPNPEP1Q9NQW7-1Q9NQW7-362366611SubstitutionMMAASRKPPRVRVNHQDFQLRNLRIIEPNEVTHSGDTGVETDGRM144
Q9NQW7XPNPEP1Q9NQW7-1Q9NQW7-462364211SubstitutionMMAASRKPPRVRVNHQDFQLRNLRIIEPNEVTHSGDTGVETDGRM144
Q9NQW7XPNPEP1Q9NQW7-1Q9NQW7-4623642398421Deletionnonenone440440

check buttonMultiple sequence alignment of our canonical and alternatively spliced XPNPEP1

check button Matched gene isoform IDs with Ensembl and RefSeq of our canonical and alternative spliced genes of XPNPEP1
UniProt-idENSGENSTENSP
Q9NQW7-3ENSG00000108039.18ENST00000502935.6ENSP00000421566.1
Q9NQW7-4ENSG00000108039.18ENST00000322238.12ENSP00000324011.8

UniProt-idNM IDNP ID
Q9NQW7-1NM_001324132.1NP_001311061.1
Q9NQW7-3NM_020383.3NP_065116.3
Q9NQW7-4NM_001167604.1NP_001161076.1

check buttonAmino acid sequences of our canonical and alternatively spliced XPNPEP1
accession_idProtein sequence
Q9NQW7-1MPPKVTSELLRQLRQAMRNSEYVTEPIQAYIIPSGDAHQSEYIAPCDCRRAFVSGFDGSAGTAIITEEHAAMWTDGRYFLQAAKQMDSNW
TLMKMGLKDTPTQEDWLVSVLPEGSRVGVDPLIIPTDYWKKMAKVLRSAGHHLIPVKENLVDKIWTDRPERPCKPLLTLGLDYTGISWKD
KVADLRLKMAERNVMWFVVTALDEIAWLFNLRGSDVEHNPVFFSYAIIGLETIMLFIDGDRIDAPSVKEHLLLDLGLEAEYRIQVHPYKS
ILSELKALCADLSPREKVWVSDKASYAVSETIPKDHRCCMPYTPICIAKAVKNSAESEGMRRAHIKDAVALCELFNWLEKEVPKGGVTEI
SAADKAEEFRRQQADFVDLSFPTISSTGPNGAIIHYAPVPETNRTLSLDEVYLIDSGAQYKDGTTDVTRTMHFGTPTAYEKECFTYVLKG
HIAVSAAVFPTGTKGHLLDSFARSALWDSGLDYLHGTGHGVGSFLNVHEGPCGISYKTFSDEPLEAGMIVTDEPGYYEDGAFGIRIENVV
Q9NQW7-2MPPKVTSELLRQLRQAMRNSEYVTEPIQAYIIPSGDAHQSEYIAPCDCRRAFVSGFDGSAGTAIITEEHAAMWTDGRYFLQAAKQMDSNW
TLMKMGLKDTPTQEDWLVSVLPEGSRVGVDPLIIPTDYWKKMAKVLRSAGHHLIPVKENLVDKIWTDRPERPCKPLLTLGLDYTGISWKD
KVADLRLKMAERNVMWFVVTALDEIAWLFNLRGSDVEHNPVFFSYAIIGLETIMLFIDGDRIDAPSVKEHLLLDLGLEAEYRIQVHPYKS
ILSELKALCADLSPREKVWVSDKASYAVSETIPKDHRCCMPYTPICIAKAVKNSAESEGMRRAHIKDAVALCELFNWLEKEVPKGGVTEI
SAADKAEEFRRQQADFVDLSFPTISSTGPNGAIIHYADGTTDVTRTMHFGTPTAYEKECFTYVLKGHIAVSAAVFPTGTKGHLLDSFARS
ALWDSGLDYLHGTGHGVGSFLNVHEGPCGISYKTFSDEPLEAGMIVTDEPGYYEDGAFGIRIENVVLVVPVKTKYNFNNRGSLTFEPLTL
Q9NQW7-3MAASRKPPRVRVNHQDFQLRNLRIIEPNEVTHSGDTGVETDGRMPPKVTSELLRQLRQAMRNSEYVTEPIQAYIIPSGDAHQSEYIAPCD
CRRAFVSGFDGSAGTAIITEEHAAMWTDGRYFLQAAKQMDSNWTLMKMGLKDTPTQEDWLVSVLPEGSRVGVDPLIIPTDYWKKMAKVLR
SAGHHLIPVKENLVDKIWTDRPERPCKPLLTLGLDYTGISWKDKVADLRLKMAERNVMWFVVTALDEIAWLFNLRGSDVEHNPVFFSYAI
IGLETIMLFIDGDRIDAPSVKEHLLLDLGLEAEYRIQVHPYKSILSELKALCADLSPREKVWVSDKASYAVSETIPKDHRCCMPYTPICI
AKAVKNSAESEGMRRAHIKDAVALCELFNWLEKEVPKGGVTEISAADKAEEFRRQQADFVDLSFPTISSTGPNGAIIHYAPVPETNRTLS
LDEVYLIDSGAQYKDGTTDVTRTMHFGTPTAYEKECFTYVLKGHIAVSAAVFPTGTKGHLLDSFARSALWDSGLDYLHGTGHGVGSFLNV
HEGPCGISYKTFSDEPLEAGMIVTDEPGYYEDGAFGIRIENVVLVVPVKTKYNFNNRGSLTFEPLTLVPIQTKMIDVDSLTDKECDWLNN
Q9NQW7-4MAASRKPPRVRVNHQDFQLRNLRIIEPNEVTHSGDTGVETDGRMPPKVTSELLRQLRQAMRNSEYVTEPIQAYIIPSGDAHQSEYIAPCD
CRRAFVSGFDGSAGTAIITEEHAAMWTDGRYFLQAAKQMDSNWTLMKMGLKDTPTQEDWLVSVLPEGSRVGVDPLIIPTDYWKKMAKVLR
SAGHHLIPVKENLVDKIWTDRPERPCKPLLTLGLDYTGISWKDKVADLRLKMAERNVMWFVVTALDEIAWLFNLRGSDVEHNPVFFSYAI
IGLETIMLFIDGDRIDAPSVKEHLLLDLGLEAEYRIQVHPYKSILSELKALCADLSPREKVWVSDKASYAVSETIPKDHRCCMPYTPICI
AKAVKNSAESEGMRRAHIKDAVALCELFNWLEKEVPKGGVTEISAADKAEEFRRQQADFVDLSFPTISSTGPNGAIIHYADGTTDVTRTM
HFGTPTAYEKECFTYVLKGHIAVSAAVFPTGTKGHLLDSFARSALWDSGLDYLHGTGHGVGSFLNVHEGPCGISYKTFSDEPLEAGMIVT
DEPGYYEDGAFGIRIENVVLVVPVKTKYNFNNRGSLTFEPLTLVPIQTKMIDVDSLTDKECDWLNNYHLTCRDVIGKELQKQGRQEALEW

Protein Functional Features

check buttonMain function of this protein. (from UniProt)
XPNPEP1 (go to UniProt):Q9NQW7

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 XPNPEP1

check buttonGene structures of our canonical and alternative spliced genes of XPNPEP1
* Click on the image to open the UCSC genome browser with custom track showing this image in a new window.
gene isoform structure of XPNPEP1

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 Q9NQW7-1
3D view using mol* of Q9NQW7-2
3D view using mol* of Q9NQW7-3
3D view using mol* of Q9NQW7-4


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 Q9NQW7-1
all structure
pLDDT distribution across the protein length of Q9NQW7-2
all structure
pLDDT distribution across the protein length of Q9NQW7-3
all structure
pLDDT distribution across the protein length of Q9NQW7-4
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 Q9NQW7-1
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
Q9NQW7-11.0076421.0131841.910.5810.7080.8550.4161.0790.3860.9111,2,3,4,33,34,35,37,38,39,40,41,42,43,44,47,48,49,
50,51,55,57,58,59,60,61,62,73,74,75,76,77,78,79,80
,81,84,85,95,96,97,98,100,102,103,104,124,125,128,
131,199,200,201,202,203,204,216,217,218,219,221,22
5,291,292,293,294,295,311,312,313,316,319,360,363,
364,367,379,381,382,383,384,389,392,393,394,395,39
6,397,398,399,401,402,415,426,466,482,483,484,485,
486,488,489,490,496,497,498,499,500,501,502,503,50
4,505,507,508,511,523,526,527,529,530,535,537
Q9NQW7-21.132521.169494.9490.3810.8311.1471.8570.8292.241.05167,169,173,174,212,213,214,216,217,218,219,220,32
6,329,330,332,333,335,336,337,370,373,374,375,376,
377,378,379,380,381,400,401,469,470
Q9NQW7-31.0036381.011846.0260.5980.7020.8660.3621.0780.3360.93943,44,45,46,47,75,76,77,78,81,82,83,84,85,86,87,88
,90,91,92,93,94,98,100,101,102,103,104,105,116,118
,119,120,121,122,123,124,127,128,138,139,140,143,1
45,146,147,166,167,168,171,174,242,243,244,245,246
,247,259,260,261,262,264,334,336,337,354,355,356,3
59,362,403,406,407,410,422,424,425,426,427,435,436
,437,438,439,440,441,442,444,445,458,469,525,526,5
27,528,529,531,532,533,539,540,541,542,543,544,545
,546,547,548,550,551,554,566,569,570,572,573,578,5
80
Q9NQW7-41.1262891.164473.340.3070.8251.061.410.831.6990.88384,387,388,391,395,400,401,402,405,406,409,413,42
4,426,427,428,429,430,431,434,436,437,438,439,446,
447,448,449,450,451,452,453,459,546,551,552,553,55
4,590

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 Q9NQW7-1_Q9NQW7-1_3ctz_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 Q9NQW7-1_3ctz_A_Q9NQW7-2.pdb
3D view using mol* of Q9NQW7-1_3ctz_A_Q9NQW7-3.pdb
3D view using mol* of Q9NQW7-1_3ctz_A_Q9NQW7-4.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 Q9NQW7-1_Q9NQW7-2.pdb
3D view using mol* of Q9NQW7-1_Q9NQW7-3.pdb
3D view using mol* of Q9NQW7-1_Q9NQW7-4.pdb

check button Protein Feature Comparison of the protein sequendary structures among the protiens.
./stats/secondary_structure/figure/Q9NQW7-1_vs_Q9NQW7-2.png
all structure<
./stats/secondary_structure/figure/Q9NQW7-1_vs_Q9NQW7-3.png
all structure<
./stats/secondary_structure/figure/Q9NQW7-1_vs_Q9NQW7-4.png
all structure<

check button Protein Feature Comparison of the relative accessible surface area (ASA) among the protiens.
./stats/relative_asa/Q9NQW7-1_vs_Q9NQW7-2.png
all structure<
./stats/relative_asa/Q9NQW7-1_vs_Q9NQW7-3.png
all structure<
./stats/relative_asa/Q9NQW7-1_vs_Q9NQW7-4.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 XPNPEP1


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

Related Diseases to XPNPEP1


check button Previous studies relating to the alternative splicing of XPNPEP1 and disease information from the MeSH term (PubMed)
GenePMIDTitleAbstractMeSH IDMeSH term


Clinically important variants in XPNPEP1


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