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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:USP21

Protein Summary

check button Gene summary
Gene name: USP21
ASpdb.0 ID: 27005
Gene
Gene symbol

USP21

Gene ID

27005

Gene nameubiquitin specific peptidase 21
SynonymsUSP16|USP23
Cytomap

1q23.3

Type of geneprotein-coding
Descriptionubiquitin carboxyl-terminal hydrolase 21NEDD8-specific proteasedeubiquitinating enzyme 21ubiquitin specific protease 21ubiquitin thioesterase 21ubiquitin thiolesterase 21ubiquitin-specific processing protease 21ubiquitin-specific protease 16
Modification date20240407
UniProtAcc

Q9UK80


check button Gene ontology of this gene with evidence of Inferred from Direct Assay (IDA) from Entrez
PartnerGeneGO IDGO termPubMed ID
GeneUSP21

GO:0004843

cysteine-type deubiquitinase activity

10799498|32011234

GeneUSP21

GO:0005654

nucleoplasm

-

GeneUSP21

GO:0005829

cytosol

-

GeneUSP21

GO:0005886

plasma membrane

-

GeneUSP21

GO:0019784

deNEDDylase activity

10799498



AS Summary

check button Information of the canonical protein with experimentally identified structure from PDB (2023).
UniProt AccFile namePDB IDMethodResolutionChainStartEnd
Q9UK80-1Q9UK80-1_2y5b_E.pdb2Y5BX-ray2.7E202559

check button ASpdb's canonical and alternatively spliced isoform information.
accession_idgene_namecanonical_idalternative_idcanonical_lengthalternative_lengthcanonical_startcanonical_endtypeoriginalSEQvariationSEQalternative_startalternative_end
Q9UK80USP21Q9UK80-1Q9UK80-2565382372382SubstitutionDLFVGQLKSCLGMEWGKAMREN372382
Q9UK80USP21Q9UK80-1Q9UK80-2565382383565Deletionnonenone382382
Q9UK80USP21Q9UK80-1Q9UK80-3565551498511Deletionnonenone497497

check buttonMultiple sequence alignment of our canonical and alternatively spliced USP21

check button Matched gene isoform IDs with Ensembl and RefSeq of our canonical and alternative spliced genes of USP21
UniProt-idENSGENSTENSP
Q9UK80-1ENSG00000143258.17ENST00000289865.12ENSP00000289865.8
Q9UK80-1ENSG00000143258.17ENST00000368002.8ENSP00000356981.3
Q9UK80-3ENSG00000143258.17ENST00000368001.1ENSP00000356980.1

UniProt-idNM IDNP ID
Q9UK80-1NM_001014443.2NP_001014443.1
Q9UK80-1NM_012475.4NP_036607.3
Q9UK80-3NM_001319848.1NP_001306777.1

check buttonAmino acid sequences of our canonical and alternatively spliced USP21
accession_idProtein sequence
Q9UK80-1MPQASEHRLGRTREPPVNIQPRVGSKLPFAPRARSKERRNPASGPNPMLRPLPPRPGLPDERLKKLELGRGRTSGPRPRGPLRADHGVPL
PGSPPPTVALPLPSRTNLARSKSVSSGDLRPMGIALGGHRGTGELGAALSRLALRPEPPTLRRSTSLRRLGGFPGPPTLFSIRTEPPASH
GSFHMISARSSEPFYSDDKMAHHTLLLGSGHVGLRNLGNTCFLNAVLQCLSSTRPLRDFCLRRDFRQEVPGGGRAQELTEAFADVIGALW
HPDSCEAVNPTRFRAVFQKYVPSFSGYSQQDAQEFLKLLMERLHLEINRRGRRAPPILANGPVPSPPRRGGALLEEPELSDDDRANLMWK
RYLEREDSKIVDLFVGQLKSCLKCQACGYRSTTFEVFCDLSLPIPKKGFAGGKVSLRDCFNLFTKEEELESENAPVCDRCRQKTRSTKKL
TVQRFPRILVLHLNRFSASRGSIKKSSVGVDFPLQRLSLGDFASDKAGSPVYQLYALCNHSGSVHYGHYTALCRCQTGWHVYNDSRVSPV
Q9UK80-2MPQASEHRLGRTREPPVNIQPRVGSKLPFAPRARSKERRNPASGPNPMLRPLPPRPGLPDERLKKLELGRGRTSGPRPRGPLRADHGVPL
PGSPPPTVALPLPSRTNLARSKSVSSGDLRPMGIALGGHRGTGELGAALSRLALRPEPPTLRRSTSLRRLGGFPGPPTLFSIRTEPPASH
GSFHMISARSSEPFYSDDKMAHHTLLLGSGHVGLRNLGNTCFLNAVLQCLSSTRPLRDFCLRRDFRQEVPGGGRAQELTEAFADVIGALW
HPDSCEAVNPTRFRAVFQKYVPSFSGYSQQDAQEFLKLLMERLHLEINRRGRRAPPILANGPVPSPPRRGGALLEEPELSDDDRANLMWK
Q9UK80-3MPQASEHRLGRTREPPVNIQPRVGSKLPFAPRARSKERRNPASGPNPMLRPLPPRPGLPDERLKKLELGRGRTSGPRPRGPLRADHGVPL
PGSPPPTVALPLPSRTNLARSKSVSSGDLRPMGIALGGHRGTGELGAALSRLALRPEPPTLRRSTSLRRLGGFPGPPTLFSIRTEPPASH
GSFHMISARSSEPFYSDDKMAHHTLLLGSGHVGLRNLGNTCFLNAVLQCLSSTRPLRDFCLRRDFRQEVPGGGRAQELTEAFADVIGALW
HPDSCEAVNPTRFRAVFQKYVPSFSGYSQQDAQEFLKLLMERLHLEINRRGRRAPPILANGPVPSPPRRGGALLEEPELSDDDRANLMWK
RYLEREDSKIVDLFVGQLKSCLKCQACGYRSTTFEVFCDLSLPIPKKGFAGGKVSLRDCFNLFTKEEELESENAPVCDRCRQKTRSTKKL
TVQRFPRILVLHLNRFSASRGSIKKSSVGVDFPLQRLSLGDFASDKAGSVHYGHYTALCRCQTGWHVYNDSRVSPVSENQVASSEGYVLF

Protein Functional Features

check buttonMain function of this protein. (from UniProt)
USP21 (go to UniProt):Q9UK80

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
Q9UK80Domain212558Note=USPType=Substitution;Start=372;End=382
Q9UK80Domain212558Note=USPType=Deletion;Start=383;End=565
Q9UK80Domain212558Note=USPType=Deletion;Start=498;End=511


Gene Isoform Structures and Expression Levels for USP21

check buttonGene structures of our canonical and alternative spliced genes of USP21
* Click on the image to open the UCSC genome browser with custom track showing this image in a new window.
gene isoform structure of USP21

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 Q9UK80-1
3D view using mol* of Q9UK80-2
3D view using mol* of Q9UK80-3


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 Q9UK80-1
all structure
pLDDT distribution across the protein length of Q9UK80-2
all structure
pLDDT distribution across the protein length of Q9UK80-3
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 Q9UK80-1
all structure
Ramachandran plot of Q9UK80-2
all structure
Ramachandran plot of Q9UK80-3
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
Q9UK80-11.0265071.051859.060.580.7250.9160.6240.9980.6260.765108,109,110,111,112,113,114,115,117,118,119,120,15
2,153,154,155,156,299,300,301,303,304,307,308,310,
311,314,327,354,358,359,361,362,365,370,371,375,37
7,378,380,382,383,384,389,391,393,394,395,396,397,
398,399,400,401,403,404,405,406,407,422,423,425,42
7,428,429,430,433,435,436,437,438,441,444,446,448,
450,462,464,465,466,467,468,473,476,478,510,514,51
5,516,519
Q9UK80-21.0321201.111281.6030.6770.6280.7671.0280.6331.6220.701133,134,135,136,138,139,141,142,207,243,260,264,26
5,267,268,271,272,273,274,275,276,278,279,280,281,
282,283
Q9UK80-31.1521081.222364.6090.530.8020.9361.5260.6122.4950.691222,225,226,228,229,302,306,482,484,507,508,509,51
5,516,517,518,526,531,534,535,536,537,538,539,540,
541

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 Q9UK80-1_Q9UK80-1_2y5b_E.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 Q9UK80-1_2y5b_E_Q9UK80-2.pdb
3D view using mol* of Q9UK80-1_2y5b_E_Q9UK80-3.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 Q9UK80-1_Q9UK80-2.pdb
3D view using mol* of Q9UK80-1_Q9UK80-3.pdb

check button Protein Feature Comparison of the protein sequendary structures among the protiens.
./stats/secondary_structure/figure/Q9UK80-1_vs_Q9UK80-2.png
all structure<
./stats/secondary_structure/figure/Q9UK80-1_vs_Q9UK80-3.png
all structure<

check button Protein Feature Comparison of the relative accessible surface area (ASA) among the protiens.
./stats/relative_asa/Q9UK80-1_vs_Q9UK80-2.png
all structure<
./stats/relative_asa/Q9UK80-1_vs_Q9UK80-3.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 USP21


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

Related Diseases to USP21


check button Previous studies relating to the alternative splicing of USP21 and disease information from the MeSH term (PubMed)
GenePMIDTitleAbstractMeSH IDMeSH term


Clinically important variants in USP21


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