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GENE AND PROTEIN SUMMARY

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Gene name

USP21

Description

ubiquitin specific peptidase 21

Protein class

Enzymes, Mapped to UniProt SWISS-PROT, Peptidases

Protein evidence

Medium

Entrez gene summary

This gene encodes a member of the C19 peptidase family, also known as family 2 of ubiquitin carboxy-terminal hydrolases. The encoded protein cleaves ubiquitin from ubiquitinated proteins for recycling in intracellular protein degradation. The encoded protein is also able to release NEDD8, a ubiquitin-like protein, from NEDD8-conjugated proteins. This gene has been referred to as USP16 and USP23 but is now known as USP21. Alternatively spliced transcript variants have been described. [provided by RefSeq, Jul 2008]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

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

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Cytoplasm

Additional location(s)

Nucleus but not nucleoli, Plasma membrane 

Staining summary

Staining of nucleus and cytoplasm in U-251 MG and A-431. Staining of cytoplasm and plasma membrane in U-2 OS.

Reliability (Single)

Antibodies in assay

HPA028397
 

NORMAL TISSUE & ORGAN SUMMARY

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Staining summary

Renal tubules and glandular cells in stomach displayed strong cytoplasmic immunoreactivity. Moderate cytoplasmic positivity was observed in small intestine, leydig cells, heart myocytes, glandular cells in uterus, gall bladder and adrenal glands. Remaining normal cells were weakly stained or negative.

Tissue specificity

Staining in 47 out of 80 cell types

Reliability (Single)

Antibodies in assay

HPA028397
 

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 12
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

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Staining summary

Antibody staining in 46% of the cancers

Antibodies in assay

HPA028397
 

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

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RNA evidence

High
 

Cell line

Cell origin

RNA abundance

IH staining

IF intensity

HPA028397

HPA028397

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

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

HPA028397 pAb