MT-TS1
MT-TS1 is a small 69 nucleotide RNA ( human mitochondrial map position 7446-7514 ) that transfers the amino acid serine to a growing polypeptide chain at the ribosome site of protein synthesis during translation . 
<triplet> RNA <subj> ribosome <obj> part of <triplet> ribosome <subj> RNA <obj> has part