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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:CPB2

Protein Summary

check button Gene summary
Gene name: CPB2
ASpdb.0 ID: 1361
Gene
Gene symbol

CPB2

Gene ID

1361

Gene namecarboxypeptidase B2
SynonymsCPU|PCPB|TAFI
Cytomap

13q14.13

Type of geneprotein-coding
Descriptioncarboxypeptidase B2carboxypeptidase B-like proteincarboxypeptidase B2 (plasma)carboxypeptidase B2 (plasma, carboxypeptidase U)carboxypeptidase Rthrombin-activable fibrinolysis inhibitorthrombin-activatable fibrinolysis inhibitor
Modification date20240305
UniProtAcc

Q96IY4


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


AS Summary

check button Information of the canonical protein with experimentally identified structure from PDB (2023).
UniProt AccFile namePDB IDMethodResolutionChainStartEnd
Q96IY4-1Q96IY4-1_3d68_A.pdb3D68X-ray2.8A24423

check button ASpdb's canonical and alternatively spliced isoform information.
accession_idgene_namecanonical_idalternative_idcanonical_lengthalternative_lengthcanonical_startcanonical_endtypeoriginalSEQvariationSEQalternative_startalternative_end
Q96IY4CPB2Q96IY4-1Q96IY4-2423360198234Deletionnonenone197197
Q96IY4CPB2Q96IY4-1Q96IY4-2423360384423SubstitutionIELRDTGTYGFLLPERYIKPTCREAFAAVSKIAWHVIRNVSNPPVEKLLPLSLK347360

check buttonMultiple sequence alignment of our canonical and alternatively spliced CPB2

check button Matched gene isoform IDs with Ensembl and RefSeq of our canonical and alternative spliced genes of CPB2
UniProt-idENSGENSTENSP
Q96IY4-1ENSG00000080618.17ENST00000181383.10ENSP00000181383.4

UniProt-idNM IDNP ID
Q96IY4-1NM_001872.4NP_001863.3

check buttonAmino acid sequences of our canonical and alternatively spliced CPB2
accession_idProtein sequence
Q96IY4-1MKLCSLAVLVPIVLFCEQHVFAFQSGQVLAALPRTSRQVQVLQNLTTTYEIVLWQPVTADLIVKKKQVHFFVNASDVDNVKAHLNVSGIP
CSVLLADVEDLIQQQISNDTVSPRASASYYEQYHSLNEIYSWIEFITERHPDMLTKIHIGSSFEKYPLYVLKVSGKEQAAKNAIWIDCGI
HAREWISPAFCLWFIGHITQFYGIIGQYTNLLRLVDFYVMPVVNVDGYDYSWKKNRMWRKNRSFYANNHCIGTDLNRNFASKHWCEEGAS
SSSCSETYCGLYPESEPEVKAVASFLRRNINQIKAYISMHSYSQHIVFPYSYTRSKSKDHEELSLVASEAVRAIEKISKNTRYTHGHGSE
Q96IY4-2MKLCSLAVLVPIVLFCEQHVFAFQSGQVLAALPRTSRQVQVLQNLTTTYEIVLWQPVTADLIVKKKQVHFFVNASDVDNVKAHLNVSGIP
CSVLLADVEDLIQQQISNDTVSPRASASYYEQYHSLNEIYSWIEFITERHPDMLTKIHIGSSFEKYPLYVLKVSGKEQAAKNAIWIDCGI
HAREWISPAFCLWFIGHNRMWRKNRSFYANNHCIGTDLNRNFASKHWCEEGASSSSCSETYCGLYPESEPEVKAVASFLRRNINQIKAYI
SMHSYSQHIVFPYSYTRSKSKDHEELSLVASEAVRAIEKISKNTRYTHGHGSETLYLAPGGGDDWIYDLGIKYSFTSNPPVEKLLPLSLK

Protein Functional Features

check buttonMain function of this protein. (from UniProt)
CPB2 (go to UniProt):Q96IY4

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
Q96IY4Domain122419Note=Peptidase M14;Ontology_term=ECO:0000255;evidence=ECO:0000255|PROSITE-ProRule:PRU01379Type=Deletion;Start=198;End=234
Q96IY4Domain122419Note=Peptidase M14;Ontology_term=ECO:0000255;evidence=ECO:0000255|PROSITE-ProRule:PRU01379Type=Substitution;Start=384;End=423


Gene Isoform Structures and Expression Levels for CPB2

check buttonGene structures of our canonical and alternative spliced genes of CPB2
* Click on the image to open the UCSC genome browser with custom track showing this image in a new window.
gene isoform structure of CPB2

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 Q96IY4-1
3D view using mol* of Q96IY4-2


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 Q96IY4-1
all structure
pLDDT distribution across the protein length of Q96IY4-2
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 Q96IY4-1
all structure
Ramachandran plot of Q96IY4-2
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
Q96IY4-11.0822160.933386.9040.3830.821.0570.3441.5310.2250.46654,55,56,57,61,62,63,65,66,67,68,69,181,183,184,23
9,256,257,267,306,308,310,311,312,313,317,321,324,
358,359,360,361,362,363,364,365,368,369,370,383,38
5,394
Q96IY4-21.0658791.0872241.1620.4520.7780.9810.8950.9810.9120.74619,20,21,23,24,46,51,52,53,54,55,56,57,58,59,60,61
,62,63,66,67,68,69,71,94,95,98,101,102,105,123,125
,126,129,130,133,149,152,153,154,156,157,158,159,1
60,161,162,163,164,165,167,169,170,171,172,173,174
,175,176,177,178,179,180,181,182,183,184,185,188,1
91,192,194,195,197,199,200,201,202,203,204,205,213
,214,218,219,220,222,230,231,232,233,237,238,239,2
40,251,252,255,258,262,265,266,269,271,273,274,275
,276,277,278,280,284,287,322,323,324,325,326,327,3
28,331,332,333,346,348,350,351,352,354,355

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 Q96IY4-1_Q96IY4-1_3d68_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 Q96IY4-1_3d68_A_Q96IY4-2.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 Q96IY4-1_Q96IY4-2.pdb

check button Protein Feature Comparison of the protein sequendary structures among the protiens.
./stats/secondary_structure/figure/Q96IY4-1_vs_Q96IY4-2.png
all structure<

check button Protein Feature Comparison of the relative accessible surface area (ASA) among the protiens.
./stats/relative_asa/Q96IY4-1_vs_Q96IY4-2.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 CPB2


check button Drugs targeting this gene/protein.
(DrugBank)
UniProt accessionGene nameDrugBank IDDrug nameDrug groupActions
Q96IY4CPB2DB05712AZD-9684investigational
Q96IY4CPB2DB11311Prothrombinapprovedagonist

Related Diseases to CPB2


check button Previous studies relating to the alternative splicing of CPB2 and disease information from the MeSH term (PubMed)
GenePMIDTitleAbstractMeSH IDMeSH term


Clinically important variants in CPB2


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