MRP-L51 is a family of small proteins from the intact 55 S mitochondrial ribosome [2]. It has otherwise been referred to as bMRP-64 [1]. The exact function of this family is not known.

1: Proteomic analysis of the mammalian mitochondrial ribosome. Identification of protein components in the 28 S small subunit. Suzuki T, Terasaki M, Takemoto-Hori C, Hanada T, Ueda T, Wada A, Watanabe K; J Biol Chem. 2001;276:33181-33195. PMID:11402041

2: Identification and comparative analysis of the large subunit mitochondrial ribosomal proteins of Neurospora crassa. Gan X, Arita K, Isono S, Kitakawa M, Yoshino K, Yonezawa K, Kato A, Inoue H, Isono K; FEMS Microbiol Lett. 2006;254:157-164. PMID:16451194