MRPS25

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. A pseudogene corresponding to this gene is found on chromosome 4. [provided by RefSeq]

Full Name

mitochondrial ribosomal protein S25

Biological Process

Mitochondrial translation Source: ComplexPortal

Cellular Location

Mitochondrion

Involvement in disease

Combined oxidative phosphorylation deficiency 50 (COXPD50):
An autosomal recessive, mitochondrial encephalomyopathy characterized by intrauterine growth retardation, poor overall growth, delayed psychomotor development, hypotonia, muscle weakness, progressive loss of ambulation, and mitochondrial oxidative phosphorylation deficiency in patient tissues. Brain imaging shows partial agenesis of the corpus callosum.