Protein
tRNA nucleotidyltransferase cca2
Organism
Schizosaccharomyces pombe (strain 972 / ATCC 24843)
Function
tRNA nucleotidyltransferase involved in the synthesis of the tRNA CCA terminus. In contrast to what is usually observed in eukaryotes for which one enzyme synthesizes the whole tRNA CCA terminus, in S.pombe, cca1 specifically adds two cytidine residues to a tRNA substrate lacking this sequence while cca2 specifically adds the terminal adenosine residue thereby completing the CCA sequence.
Similarity
Belongs to the tRNA nucleotidyltransferase/poly(A) polymerase family.
Sequence
MYSRIVLNDVEKKVVNLLKKTADFIESKSSSSSSLEVRLAGGWVRDKLLGLSSDDLDVTLNKVTGVDFANSIFEYVHSLDSDSVIPYKDALGKLTVNPDQSKHLETATLSLFDLDIDFVGLRAESYDDKSRIPSVTPGTVETDALRRDFTVNTLFFNIRTEKIEDITKRGYKDLQTKVLVTPISPLQSFLEDPLRILRGIRFASRFEFTIDPSVVSAIQDPKVCKAFEKKVSKERVGEEIEKMLKGANAKLALQLLYSTNTYQFTFDTLPAEKEFQIPKALEATESLFQSLALTFPKLMKLSEDEKIGLWLYVALIPWSSQTVMVKKKQFYIPAIIAKDKLKLRSTYVNQLNQCCTFNPIFDELVNDTSTKNCSSIGSLIRQLNKSWEVVFLTSVIYSCCKTPAASVSNTFSSYKSLYDFIYDKNLQNAYNMKPLLDGKQIMKNVGVKPGPQLKETMDNMISWQFKHPEGSVEDCVAYLQSLKI