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GENE AND PROTEIN SUMMARY

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Gene name

PPP1R8

Description

protein phosphatase 1, regulatory subunit 8

Protein class

Mapped to UniProt SWISS-PROT

Protein evidence

High

Entrez gene summary

This gene, through alternative splicing, encodes three different isoforms. Two of the protein isoforms encoded by this gene are specific inhibitors of type 1 serine/threonine protein phosphatases and can bind but not cleave RNA. The third protein isoform lacks the phosphatase inhibitory function but is a single-strand endoribonuclease comparable to RNase E of E. coli. This isoform requires magnesium for its function and cleaves specific sites in A+U-rich regions of RNA. [provided by RefSeq, Jul 2008]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

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

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Nucleus but not nucleoli

Additional location(s)

 

Staining summary

Localized to the nucleus but excluded from the nucleoli in all three cell lines.

Reliability (APE)

High

Antibodies in assay

HPA027406, HPA027417, HPA027452
 

NORMAL TISSUE & ORGAN SUMMARY

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Expression summary

Ubiquitous nuclear expression.

Tissue specificity

Expressed in 79 out of 79 cell types

Reliability (APE)

High

Antibodies in assay

HPA027406, HPA027417, HPA027452
 

Organ

No of cell types

Protein expression

CNS (brain) 11
Hematopoietic (blood) 8
Liver and pancreas 5
Digestive (GI-tract) 12
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 annotated protein expression





High
Medium
Low
None

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 98% of the cancers

Antibodies in assay

HPA027406, HPA027417, HPA027452
 

Tissue

Cancer staining

Protein
expression of
normal tissue

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

Tissue

Cancer staining

Protein
expression of
normal tissue

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

HPA027406

HPA027417

HPA027452

HPA027406

HPA027417

HPA027452

A-431 Skin High
ModerateStrongModerate
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
ModerateStrongModerate
U-251 MG Brain High
StrongStrongStrong

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

HPA027417 pAb
HPA027406 pAb
HPA027452 pAb