Fields »

GENE AND PROTEIN SUMMARY

? »

Gene name

PSMC2

Description

proteasome (prosome, macropain) 26S subunit, ATPase, 2

Protein class

Mapped to UniProt SWISS-PROT, Plasma proteins

Protein evidence

High

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 one of the ATPase subunits, a member of the triple-A family of ATPases which have a chaperone-like activity. This subunit has been shown to interact with several of the basal transcription factors so, in addition to participation in proteasome functions, this subunit may participate in the regulation of transcription. This subunit may also compete with PSMC3 for binding to the HIV tat protein to regulate the interaction between the viral protein and the transcription complex. Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Mar 2011]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

5 in total
0 with predicted TM region
0 with predicted signal peptide

SUBCELLULAR LOCATION SUMMARY

? »

Show image »

Main location(s)

Cytoplasm

Additional location(s)

Nucleus but not nucleoli, Mitochondria 

Staining summary

Staining of cytoplasm in all three cell lines, with additional staining of nucleus in U-251 MG and U-2 OS and mitochondria in U-251 MG.

Reliability (Single)

Antibodies in assay

HPA019238
 

NORMAL TISSUE & ORGAN SUMMARY

? »

Show image »

Staining summary

Most normal tissues displayed strong cytoplasmic and nuclear staining.

Tissue specificity

Staining in 80 out of 81 cell types

Reliability (Single)

Antibodies in assay

HPA019238
 

Organ

No of cell types

Antibody staining

CNS (brain) 11
Hematopoietic (blood) 8
Liver and pancreas 5
Digestive (GI-tract) 13
Respiratory (lung) 4
Cardiovascular 1
Female tissues 13
Placenta 2
Male tissues 5
Urinary tract (kidney) 3
Skin and soft tissues 13
Endocrine tissues 3

Level of antibody staining





Strong
Moderate
Weak
Negative

CANCER TISSUE SUMMARY

? »

Staining summary

Antibody staining in 100% of the cancers

Antibodies in assay

HPA019238
 

Tissue

Cancer staining

Normal tissue
staining

Breast cancer
 
Carcinoid
 
Cervical cancer
 
 
Colorectal cancer
 
 
Endometrial cancer
 
 
Glioma
 
Head and neck cancer
 
 
Liver cancer
 
 
Lung cancer
 
 
Lymphoma
 
 
 

Tissue

Cancer staining

Normal tissue
staining

Melanoma
 
Ovarian cancer
 
Pancreatic cancer
 
Prostate cancer
 
Renal cancer
 
Skin cancer
 
Stomach cancer
 
 
Testis cancer
 
Thyroid cancer
 
Urothelial cancer
 

Level of antibody staining





Strong
Moderate
Weak
Negative

CELL LINE SUMMARY

? »

RNA evidence

High
 

Cell line

Cell origin

RNA abundance

IH staining

IF intensity

HPA019238

HPA019238

A-431 Skin High
Weak
A-549 Lung High
CACO-2 Colon High
HEK 293 Embryonal kidney High
HeLa Cervix High
Hep-G2 Liver High
MCF-7 Pleural effusion High
PC-3 Bone marrow High
RT-4 Urinary bladder High
U-2 OS Bone High
Moderate
U-251 MG Brain High
Moderate

ANTIBODY SUMMARY

? »

Antibody

Clonality

Validation

HPA019238 pAb