Fields »
ABOUT
HELP
BLOG
PSMF1

Please wait until image is loaded before changing channels

GENERAL INFORMATION

Gene name

 PSMF1

Gene description

 Proteasome inhibitor subunit 1

Protein class

 Predicted intracellular proteins

Predicted localization

 Intracellular

Number of transcripts

 6
SHOW MORE

HUMAN PROTEIN ATLAS INFORMATION

Summary

 Localized to the cytosol.

RNA cell category

 Expressed in all

Protein evidence

 Evidence at protein level

Main location

 Localized to the Cytosol (validated)

DATA RELIABILITY

Reliability score

 Validated based on 2 antibodies.
HPA041122 , HPA041300
SHOW MORE

ASSAYS
RNA expression
Human cells

RNA EXPRESSION OVERVIEW
RNA cell line category: Expressed in all
Organ
Origin
Category
Expression
Alphabetical
Cell lines sorted after organ of phenotypic resemblance.

HUMAN CELLS

Summary

 Localized to the cytosol.

Main location

 Cytosol (validated)

 

 

 
Toggle channels
Low
High
G1
S
G2
M
N/A

Thumbnail

Antibody

Cell line

Location

Single-cell variation

Cell cycle dependent variation
HPA041122 A-431 Cytosol
HPA041122 U-2 OS Cytosol
HPA041122 U-251 MG Cytosol
HPA041300 A-431 Cytosol
HPA041300 U-2 OS Cytosol
HPA041300 U-251 MG Cytosol

GENE INFORMATION

Gene name

 PSMF1 (HGNC Symbol)

Synonyms

 PI31

Description

 Proteasome inhibitor subunit 1 (HGNC Symbol)

Entrez gene summary

 The 26S proteasome is a multicatalytic proteinase complex with a highly ordered structure composed of 2 complexes, a 20S core and a 19S regulator. The 20S core is composed of 4 rings of 28 non-identical subunits; 2 rings are composed of 7 alpha subunits and 2 rings are composed of 7 beta subunits. The 19S regulator is composed of a base, which contains 6 ATPase subunits and 2 non-ATPase subunits, and a lid, which contains up to 10 non-ATPase subunits. Proteasomes are distributed throughout eukaryotic cells at a high concentration and cleave peptides in an ATP/ubiquitin-dependent process in a non-lysosomal pathway. An essential function of a modified proteasome, the immunoproteasome, is the processing of class I MHC peptides. This gene encodes a protein that inhibits the activation of the proteasome by the 11S and 19S regulators. Alternative transcript variants have been identified for this gene. [provided by RefSeq, Jul 2008]

Chromosome

 20

Cytoband

 p13

Chromosome location (bp)

 1113263 - 1189415

Protein evidence

 Evidence at protein level (all genes)

Ensembl

 ENSG00000125818 (version 83.38)

Entrez gene

 9491

UniProt

 Q92530 (UniProt - Evidence at protein level)

neXtProt

 NX_Q92530

Antibodypedia

 PSMF1 antibodies

PROTEIN BROWSER
PSMF1-003
PSMF1-004
PSMF1-006
PSMF1-008
PSMF1-010
PSMF1-201

PROTEIN INFORMATION

Splice variant

UniProt

Protein class

Gene ontology

Length & mass

Signal peptide
(predicted)

Transmembrane regions
(predicted)
PSMF1-003
ENSP00000246015
ENST00000246015
Q5QPM7 [Direct mapping]
Proteasome inhibitor PI31 subunit
Show all
   SPOCTOPUS predicted secreted proteins
Predicted intracellular proteins
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005737 [cytoplasm]
Show all
 263 aa
29 kDa 		No 0
PSMF1-004
ENSP00000396547
ENST00000435720
H0Y555 [Direct mapping]
Proteasome inhibitor PI31 subunit
Show all
Predicted intracellular proteins
Protein evidence (Ezkurdia et al 2014)
Show all
 107 aa
11.5 kDa 		No 0
PSMF1-006
ENSP00000338039
ENST00000335877
Q92530 [Direct mapping]
Proteasome inhibitor PI31 subunit
Show all
   SPOCTOPUS predicted secreted proteins
Predicted intracellular proteins
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000082 [G1/S transition of mitotic cell cycle]
GO:0000165 [MAPK cascade]
GO:0000186 [activation of MAPKK activity]
GO:0000209 [protein polyubiquitination]
GO:0000278 [mitotic cell cycle]
GO:0002223 [stimulatory C-type lectin receptor signaling pathway]
GO:0002474 [antigen processing and presentation of peptide antigen via MHC class I]
GO:0002479 [antigen processing and presentation of exogenous peptide antigen via MHC class I, TAP-dependent]
GO:0004866 [endopeptidase inhibitor activity]
GO:0005515 [protein binding]
GO:0005654 [nucleoplasm]
GO:0005737 [cytoplasm]
GO:0005783 [endoplasmic reticulum]
GO:0005829 [cytosol]
GO:0005839 [proteasome core complex]
GO:0006511 [ubiquitin-dependent protein catabolic process]
GO:0006521 [regulation of cellular amino acid metabolic process]
GO:0006595 [polyamine metabolic process]
GO:0006915 [apoptotic process]
GO:0006977 [DNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrest]
GO:0007173 [epidermal growth factor receptor signaling pathway]
GO:0007264 [small GTPase mediated signal transduction]
GO:0007265 [Ras protein signal transduction]
GO:0007411 [axon guidance]
GO:0008286 [insulin receptor signaling pathway]
GO:0008543 [fibroblast growth factor receptor signaling pathway]
GO:0010467 [gene expression]
GO:0010951 [negative regulation of endopeptidase activity]
GO:0012501 [programmed cell death]
GO:0016020 [membrane]
GO:0016032 [viral process]
GO:0031145 [anaphase-promoting complex-dependent proteasomal ubiquitin-dependent protein catabolic process]
GO:0033209 [tumor necrosis factor-mediated signaling pathway]
GO:0034641 [cellular nitrogen compound metabolic process]
GO:0038061 [NIK/NF-kappaB signaling]
GO:0038095 [Fc-epsilon receptor signaling pathway]
GO:0042590 [antigen processing and presentation of exogenous peptide antigen via MHC class I]
GO:0042981 [regulation of apoptotic process]
GO:0043066 [negative regulation of apoptotic process]
GO:0043488 [regulation of mRNA stability]
GO:0044281 [small molecule metabolic process]
GO:0045087 [innate immune response]
GO:0048010 [vascular endothelial growth factor receptor signaling pathway]
GO:0048011 [neurotrophin TRK receptor signaling pathway]
GO:0050852 [T cell receptor signaling pathway]
GO:0051436 [negative regulation of ubiquitin-protein ligase activity involved in mitotic cell cycle]
GO:0051437 [positive regulation of ubiquitin-protein ligase activity involved in regulation of mitotic cell cycle transition]
GO:0051439 [regulation of ubiquitin-protein ligase activity involved in mitotic cell cycle]
GO:0070628 [proteasome binding]
GO:0090090 [negative regulation of canonical Wnt signaling pathway]
GO:0090263 [positive regulation of canonical Wnt signaling pathway]
GO:1901799 [negative regulation of proteasomal protein catabolic process]
Show all
 271 aa
29.8 kDa 		No 0
PSMF1-008
ENSP00000371324
ENST00000381899
Q5QPM9 [Direct mapping]
Proteasome inhibitor PI31 subunit
Show all
   SPOCTOPUS predicted secreted proteins
Predicted intracellular proteins
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005737 [cytoplasm]
Show all
 183 aa
20.6 kDa 		No 0
PSMF1-010
ENSP00000371323
ENST00000381898
F5H4Z3 [Direct mapping]
Proteasome inhibitor PI31 subunit
Show all
Predicted intracellular proteins
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005737 [cytoplasm]
Show all
 127 aa
13.6 kDa 		No 0
PSMF1-201
ENSP00000327704
ENST00000333082
Q92530 [Direct mapping]
Proteasome inhibitor PI31 subunit
Show all
   SPOCTOPUS predicted secreted proteins
Predicted intracellular proteins
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000082 [G1/S transition of mitotic cell cycle]
GO:0000165 [MAPK cascade]
GO:0000186 [activation of MAPKK activity]
GO:0000209 [protein polyubiquitination]
GO:0000278 [mitotic cell cycle]
GO:0002223 [stimulatory C-type lectin receptor signaling pathway]
GO:0002474 [antigen processing and presentation of peptide antigen via MHC class I]
GO:0002479 [antigen processing and presentation of exogenous peptide antigen via MHC class I, TAP-dependent]
GO:0004866 [endopeptidase inhibitor activity]
GO:0005515 [protein binding]
GO:0005654 [nucleoplasm]
GO:0005737 [cytoplasm]
GO:0005783 [endoplasmic reticulum]
GO:0005829 [cytosol]
GO:0005839 [proteasome core complex]
GO:0006511 [ubiquitin-dependent protein catabolic process]
GO:0006521 [regulation of cellular amino acid metabolic process]
GO:0006595 [polyamine metabolic process]
GO:0006915 [apoptotic process]
GO:0006977 [DNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrest]
GO:0007173 [epidermal growth factor receptor signaling pathway]
GO:0007264 [small GTPase mediated signal transduction]
GO:0007265 [Ras protein signal transduction]
GO:0007411 [axon guidance]
GO:0008286 [insulin receptor signaling pathway]
GO:0008543 [fibroblast growth factor receptor signaling pathway]
GO:0010467 [gene expression]
GO:0010951 [negative regulation of endopeptidase activity]
GO:0012501 [programmed cell death]
GO:0016020 [membrane]
GO:0016032 [viral process]
GO:0031145 [anaphase-promoting complex-dependent proteasomal ubiquitin-dependent protein catabolic process]
GO:0033209 [tumor necrosis factor-mediated signaling pathway]
GO:0034641 [cellular nitrogen compound metabolic process]
GO:0038061 [NIK/NF-kappaB signaling]
GO:0038095 [Fc-epsilon receptor signaling pathway]
GO:0042590 [antigen processing and presentation of exogenous peptide antigen via MHC class I]
GO:0042981 [regulation of apoptotic process]
GO:0043066 [negative regulation of apoptotic process]
GO:0043488 [regulation of mRNA stability]
GO:0044281 [small molecule metabolic process]
GO:0045087 [innate immune response]
GO:0048010 [vascular endothelial growth factor receptor signaling pathway]
GO:0048011 [neurotrophin TRK receptor signaling pathway]
GO:0050852 [T cell receptor signaling pathway]
GO:0051436 [negative regulation of ubiquitin-protein ligase activity involved in mitotic cell cycle]
GO:0051437 [positive regulation of ubiquitin-protein ligase activity involved in regulation of mitotic cell cycle transition]
GO:0051439 [regulation of ubiquitin-protein ligase activity involved in mitotic cell cycle]
GO:0070628 [proteasome binding]
GO:0090090 [negative regulation of canonical Wnt signaling pathway]
GO:0090263 [positive regulation of canonical Wnt signaling pathway]
GO:1901799 [negative regulation of proteasomal protein catabolic process]
Show all
 271 aa
29.8 kDa 		No 0

Contact

The Project

The Human Protein Atlas

The Human Protein Atlas project is funded
by the Knut & Alice Wallenberg foundation.