The protein encoded by this gene directs the termination of translation in response to the peptide chain termination codons. Initially thought to have a role in the termination of mitochondria protein synthesis. mtRF1 has been hypothesized to recognize non-standard stop codons AGA and AGG in vertebrates. Alternatively, based on detailed 3D modelling, it has been proposed to recognize stalled ribosomes in which a tRNA is still bound to the peptide chain, but in which the A-site of the ribosome is empty.
^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^Zhang Y, Spremulli LL (November 1998). "Identification and cloning of human mitochondrial translational release factor 1 and the ribosome recycling factor". Biochimica et Biophysica Acta (BBA) - Gene Structure and Expression. 1443 (1–2): 245–50. doi:10.1016/S0167-4781(98)00223-1. PMID9838146.
^Hansen LL, Jørgensen R, Justesen J (2000). "Assignment of the human mitochondrial translational release factor 1 (MTRF1) to chromosome 13q14.1→q14.3 and of the human mitochondrial ribosome recycling factor (MRRF) to chromosome 9q32→q34.1 with radiation hybrid mapping". Cytogenetics and Cell Genetics. 88 (1–2): 91–2. doi:10.1159/000015494. PMID10773675. S2CID1354562.