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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:CTSS

Protein Summary

check button Gene summary
Gene name: CTSS
ASpdb.0 ID: 1520
Gene
Gene symbol

CTSS

Gene ID

1520

Gene namecathepsin S
Synonyms-
Cytomap

1q21.3

Type of geneprotein-coding
Descriptioncathepsin S
Modification date20240305
UniProtAcc

P25774


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

GO:0004197

cysteine-type endopeptidase activity

8612130|12788072|22952693

GeneCTSS

GO:0005518

collagen binding

22952693

GeneCTSS

GO:0005615

extracellular space

9524075|22952693

GeneCTSS

GO:0005764

lysosome

15196205

GeneCTSS

GO:0005770

late endosome

22365146

GeneCTSS

GO:0006508

proteolysis

12788072|22864553

GeneCTSS

GO:0010447

response to acidic pH

22864553

GeneCTSS

GO:0016485

protein processing

22864553

GeneCTSS

GO:0019886

antigen processing and presentation of exogenous peptide antigen via MHC class II

30612035

GeneCTSS

GO:0030574

collagen catabolic process

22952693

GeneCTSS

GO:0034769

basement membrane disassembly

22952693

GeneCTSS

GO:0043231

intracellular membrane-bounded organelle

-

GeneCTSS

GO:0043236

laminin binding

22952693

GeneCTSS

GO:0045335

phagocytic vesicle

30612035

GeneCTSS

GO:0048002

antigen processing and presentation of peptide antigen

8612130

GeneCTSS

GO:0051603

proteolysis involved in protein catabolic process

22952693

GeneCTSS

GO:2001259

positive regulation of cation channel activity

22864553



AS Summary

check button Information of the canonical protein with experimentally identified structure from PDB (2023).
UniProt AccFile namePDB IDMethodResolutionChainStartEnd
P25774-1P25774-1_2c0y_A.pdb2C0YX-ray2.1A18331

check button ASpdb's canonical and alternatively spliced isoform information.
accession_idgene_namecanonical_idalternative_idcanonical_lengthalternative_lengthcanonical_startcanonical_endtypeoriginalSEQvariationSEQalternative_startalternative_end
P25774CTSSP25774-1P25774-233128184133Deletionnonenone8383

check buttonMultiple sequence alignment of our canonical and alternatively spliced CTSS

check button Matched gene isoform IDs with Ensembl and RefSeq of our canonical and alternative spliced genes of CTSS
UniProt-idENSGENSTENSP
P25774-1ENSG00000163131.12ENST00000368985.8ENSP00000357981.3
P25774-1ENSG00000163131.12ENST00000472977.7ENSP00000475176.2
P25774-1ENSG00000163131.12ENST00000607427.2ENSP00000475557.2
P25774-1ENSG00000163131.12ENST00000681444.1ENSP00000505359.1
P25774-2ENSG00000163131.12ENST00000680288.1ENSP00000506001.1

UniProt-idNM IDNP ID
P25774-1NM_004079.4NP_004070.3
P25774-2NM_001199739.1NP_001186668.1

check buttonAmino acid sequences of our canonical and alternatively spliced CTSS
accession_idProtein sequence
P25774-1MKRLVCVLLVCSSAVAQLHKDPTLDHHWHLWKKTYGKQYKEKNEEAVRRLIWEKNLKFVMLHNLEHSMGMHSYDLGMNHLGDMTSEEVMS
LMSSLRVPSQWQRNITYKSNPNRILPDSVDWREKGCVTEVKYQGSCGACWAFSAVGALEAQLKLKTGKLVSLSAQNLVDCSTEKYGNKGC
NGGFMTTAFQYIIDNKGIDSDASYPYKAMDQKCQYDSKYRAATCSKYTELPYGREDVLKEAVANKGPVSVGVDARHPSFFLYRSGVYYEP
P25774-2MKRLVCVLLVCSSAVAQLHKDPTLDHHWHLWKKTYGKQYKEKNEEAVRRLIWEKNLKFVMLHNLEHSMGMHSYDLGMNHLGDMGSCGACW
AFSAVGALEAQLKLKTGKLVSLSAQNLVDCSTEKYGNKGCNGGFMTTAFQYIIDNKGIDSDASYPYKAMDQKCQYDSKYRAATCSKYTEL
PYGREDVLKEAVANKGPVSVGVDARHPSFFLYRSGVYYEPSCTQNVNHGVLVVGYGDLNGKEYWLVKNSWGHNFGEEGYIRMARNKGNHC

Protein Functional Features

check buttonMain function of this protein. (from UniProt)
CTSS (go to UniProt):P25774

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 CTSS

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

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 P25774-1
3D view using mol* of P25774-2


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 P25774-1
all structure
pLDDT distribution across the protein length of P25774-2
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 P25774-1
all structure
Ramachandran plot of P25774-2
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
P25774-10.879320.63451.1070.4390.9931.5311.3341.5150.8811.216127,128,130,131,139,142,143,145,146,149,162,163,16
4,201,279,280,281,297,298,299
P25774-21.0311791.096581.0420.6890.6520.8530.990.7221.3711.13537,80,83,85,86,87,88,89,90,92,93,95,96,99,100,103,
104,109,111,112,113,114,115,132,133,134,135,136,15
1,154,156,179,180,181,182,197,201,204,205,226,227,
228,229,230,231,233,247,248,249,250,251,258,275,27
7

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 P25774-1_P25774-1_2c0y_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 P25774-1_2c0y_A_P25774-2.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 P25774-1_P25774-2.pdb

check button Protein Feature Comparison of the protein sequendary structures among the protiens.
./stats/secondary_structure/figure/P25774-1_vs_P25774-2.png
all structure<

check button Protein Feature Comparison of the relative accessible surface area (ASA) among the protiens.
./stats/relative_asa/P25774-1_vs_P25774-2.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 CTSS


check button Drugs targeting this gene/protein.
(DrugBank)
UniProt accessionGene nameDrugBank IDDrug nameDrug groupActions
P25774CTSSDB07839N~2~-1,3-BENZOXAZOL-2-YL-3-CYCLOHEXYL-N-{2-[(4-METHOXYPHENYL)AMINO]ETHYL}-L-ALANINAMIDEexperimental
P25774CTSSDB08755N-[(1S)-2-{[(1R)-2-(benzyloxy)-1-cyano-1-methylethyl]amino}-1-(cyclohexylmethyl)-2-oxoethyl]morpholine-4-carboxamideexperimental
P25774CTSSDB08195(1R)-2-[(CYANOMETHYL)AMINO]-1-({[2-(DIFLUOROMETHOXY)BENZYL]SULFONYL}METHYL)-2-OXOETHYL MORPHOLINE-4-CARBOXYLATEexperimental
P25774CTSSDB07587N-(1-CYANOCYCLOPROPYL)-3-({[(2S)-5-OXOPYRROLIDIN-2-YL]METHYL}SULFONYL)-N~2~-[(1S)-2,2,2-TRIFLUORO-1-(4-FLUOROPHENYL)ETHYL]-L-ALANINAMIDEexperimental
P25774CTSSDB03984Morpholine-4-Carboxylic Acid [1-(2-Benzylsulfanyl-1-Formyl-Ethylcarbamoyl)-2-Phenyl-Ethyl]-Amideexperimental
P25774CTSSDB08752N-[(1S)-2-[(4-cyano-1-methylpiperidin-4-yl)amino]-1-(cyclohexylmethyl)-2-oxoethyl]morpholine-4-carboxamideexperimental
P25774CTSSDB07589N-[1-(AMINOMETHYL)CYCLOPROPYL]-3-(BENZYLSULFONYL)-N~2~-[(1S)-2,2,2-TRIFLUORO-1-(4-HYDROXYPHENYL)ETHYL]-L-ALANINAMIDEexperimental
P25774CTSSDB07520N-[1-(AMINOMETHYL)CYCLOPROPYL]-3-(MORPHOLIN-4-YLSULFONYL)-N~2~-[(1S)-2,2,2-TRIFLUORO-1-(4-FLUOROPHENYL)ETHYL]-L-ALANINAMIDEexperimental
P25774CTSSDB086112-[(2',3',4'-TRIFLUOROBIPHENYL-2-YL)OXY]ETHANOLexperimental
P25774CTSSDB07878N-[(1S)-1-{1-[(1R,3E)-1-ACETYLPENT-3-EN-1-YL]-1H-1,2,3-TRIAZOL-4-YL}-1,2-DIMETHYLPROPYL]BENZAMIDEexperimental
P25774CTSSDB12010Fostamatinibapproved, investigationalinhibitor
P25774CTSSDB03767Morpholine-4-Carboxylic Acid [1s-(2-Benzyloxy-1r-Cyano-Ethylcarbamoyl)-3-Methyl-Butyl]Amideexperimental
P25774CTSSDB03837Morpholine-4-Carboxylic Acid (1-(3-Benzenesulfonyl-1-Phenethylallylcarbamoyl)-3-Methylbutyl)-Amideexperimental

Related Diseases to CTSS


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


Clinically important variants in CTSS


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