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GENE AND PROTEIN SUMMARY

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Gene name

MRPL22

Description

mitochondrial ribosomal protein L22

Protein class

Mapped to UniProt SWISS-PROT, Potential transmembrane proteins, Potentially secreted proteins, Ribosomal proteins

Protein evidence

High

Entrez gene summary

Mammalian mitochondrial ribosomal proteins are encoded by nuclear genes and help in protein synthesis within the mitochondrion. Mitochondrial ribosomes (mitoribosomes) consist of a small 28S subunit and a large 39S subunit. They have an estimated 75% protein to rRNA composition compared to prokaryotic ribosomes, where this ratio is reversed. Another difference between mammalian mitoribosomes and prokaryotic ribosomes is that the latter contain a 5S rRNA. Among different species, the proteins comprising the mitoribosome differ greatly in sequence, and sometimes in biochemical properties, which prevents easy recognition by sequence homology. This gene encodes a 39S subunit protein that belongs to the L22 ribosomal protein family. A pseudogene corresponding to this gene is found on chromosome 4q. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

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

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Mitochondria

Additional location(s)

 

Staining summary

Staining of mitochondria in MCF-7.

Reliability (Single)

Antibodies in assay

HPA047063
 

NORMAL TISSUE & ORGAN SUMMARY

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Staining summary

Most of the normal tissues showed moderate to strong cytoplasmic staining, often with a granular pattern. The liver, smooth muscle cells, spleen, soft tissues and the glial cells were weakly stained or negative.

Tissue specificity

Staining in 53 out of 77 cell types

Reliability (Single)

Antibodies in assay

HPA047063
 

Organ

No of cell types

Antibody staining

CNS (brain) 9
Hematopoietic (blood) 8
Liver and pancreas 5
Digestive (GI-tract) 12
Respiratory (lung) 3
Cardiovascular 1
Female tissues 12
Placenta 2
Male tissues 5
Urinary tract (kidney) 3
Skin and soft tissues 14
Endocrine tissues 3

Level of antibody staining





Strong
Moderate
Weak
Negative

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 83% of the cancers

Antibodies in assay

HPA047063
 

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

HPA047063

HPA047063

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

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

HPA047063 pAb