MRP-S31 is the mitochondrial 28S ribosomal subunit S31. This family of proteins is found in eukaryotes. Proteins in this family are typically between 246 and 395 amino acids in length. There are two conserved sequence motifs: RHFMELV and GLSKN.

1: The small subunit of the mammalian mitochondrial ribosome. Identification of the full complement of ribosomal proteins present. Cavdar Koc E, Burkhart W, Blackburn K, Moseley A, Spremulli LL; J Biol Chem. 2001;276:19363-19374. PMID:11279123