MRPS22
Available structures PDB Ortholog search: PDBe RCSB List of PDB id codes 3J9M
Identifiers
Aliases	MRPS22, C3orf5, COXPD5, GIBT, MRP-S22, RPMS22, GK002, mitochondrial ribosomal protein S22, ODG7
External IDs	OMIM: 605810 MGI: 1928137 HomoloGene: 57030 GeneCards: MRPS22
Gene location (Human) Chr. Chromosome 3 (human)[1] Band 3q23 Start 139,005,806 bp[1] End 139,360,497 bp[1]
Gene location (Mouse) Chr. Chromosome 9 (mouse)[2] Band 9|9 E3.3 Start 98,470,783 bp[2] End 98,483,713 bp[2]
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in right adrenal gland Achilles tendon tibialis anterior muscle left adrenal gland endothelial cell deltoid muscle right ventricle gastrocnemius muscle middle temporal gyrus quadriceps femoris muscle Top expressed in medial ganglionic eminence maxillary prominence abdominal wall renal corpuscle facial motor nucleus medullary collecting duct ureter atrioventricular valve endocardial cushion seminiferous tubule More reference expression data BioGPS More reference expression data
Gene ontology Molecular function structural constituent of ribosome Cellular component mitochondrial inner membrane ribosome mitochondrial ribosome mitochondrion mitochondrial small ribosomal subunit Biological process mitochondrial translational elongation mitochondrial translational termination biological process Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 56945 64655 Ensembl ENSG00000175110 ENSMUSG00000032459 UniProt P82650 Q9CXW2 RefSeq (mRNA) NM_020191 NM_001363857 NM_001363893 NM_025485 RefSeq (protein) NP_064576 NP_001350786 NP_001350822 NP_079761 Location (UCSC) Chr 3: 139.01 – 139.36 Mb Chr 9: 98.47 – 98.48 Mb PubMed search [3] [4]
Wikidata
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28S ribosomal protein S22, mitochondrial is a protein that in humans is encoded by the MRPS22 gene.^[5][6]

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 does not seem to have a counterpart in prokaryotic and fungal-mitochondrial ribosomes. This gene lies telomeric of and is transcribed in the opposite direction from the forkhead box L2 gene. A pseudogene corresponding to this gene is found on chromosome Xq.^[6]