MRPS28

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 has been called mitochondrial ribosomal protein S35 in the literature.

Full Name

MITOCHONDRIAL RIBOSOMAL PROTEIN S28

Biological Process

Mitochondrial translation Source: ComplexPortal

Cellular Location

Mitochondrion

Involvement in disease

Combined oxidative phosphorylation deficiency 47 (COXPD47):
An autosomal recessive, multisystemic, mitochondrial disorder characterized by intrauterine growth retardation, swallowing difficulties with failure to thrive, hypoglycemia, dehydration, and hepatomegaly. Additional features include global developmental delay with impaired intellectual development and absent speech, microcephaly, facial dysmorphism, cataract, sensorineural deafness, skeletal features, and cryptorchidism. Laboratory studies show metabolic acidosis, increased serum lactate, and variably impaired activity of mitochondrial respiratory complexes I, III, IV, and V in different tissues.