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GENE AND PROTEIN SUMMARY

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Gene name

MRPS18C

Description

mitochondrial ribosomal protein S18C

Protein class

Mapped to UniProt SWISS-PROT, Ribosomal proteins

Protein evidence

Medium

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 28S subunit protein that belongs to the ribosomal protein S18P family. The encoded protein is one of three that has significant sequence similarity to bacterial S18 proteins. The primary sequences of the three human mitochondrial S18 proteins are no more closely related to each other than they are to the prokaryotic S18 proteins. Pseudogenes corresponding to this gene are found on chromosomes 8p, 12p, 15q, and 22q. [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
0 with predicted signal peptide

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Nucleoli

Additional location(s)

Nucleus, Mitochondria, Cell Junctions 

Staining summary

Staining of nucleoli in all three cell lines. Additional staining of nucleus in Hep-G2, mitochondria, cell junctions and nucleus in MCF-7 and cell junctions in U-2 OS.

Reliability (Single)

Antibodies in assay

HPA050404
 

NORMAL TISSUE & ORGAN SUMMARY

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Staining summary

Most normal tissues showed weak to moderate cytoplasmic positivity. Gastrointestinal tract, parathyroid gland, renal tubules and heart muscles exhibited strong immunoreactivity. Pneumocytes, uterus, placenta, CNS tissues, spleen, soft tissues and smooth muscle were in general negative.

Tissue specificity

Staining in 47 out of 79 cell types

Reliability (Single)

Antibodies in assay

HPA050404
 

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 12
Endocrine tissues 3

Level of antibody staining





Strong
Moderate
Weak
Negative

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 82% of the cancers

Antibodies in assay

HPA050404
 

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

HPA050404

HPA050404

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

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

HPA050404 pAb