Nucleic Acids Research, 1981, Vol. 9, No. 11 2543-2547
© 1981
MOLECULAR BIOLOGY |
Nucleotide sequence of a spinach chloroplast valine tRNA
Department of Biochemistry, State University of New York at Stony Brook Stony Brook, NY 11794, USA
Received March 3, 1981. The nucleotide sequence of a spinach chloroplast valine tRNA (sp. chl.tRNAVal) has been determined. This tRNA shows essentially equal homology to prokaryotic valine tRNAs (5865% homology) and to the mitochondrial valine tRNAs of lower eukaryotes (yeast and N. crassa, 61-62% homology). Sp. chl.tRNA a shows distinctly lower homology to mouse mitochondrial valine tRNA (53% homology) and to eukaryotic cytoplasmic valine tRNAs (4753% homology).Sp. chl. tRNAVal, like all other chloroplast tRNAs sequenced, contains a methylated GG sequence in the dihydrouridine loop and lacks unusual structural features which have been found in several mitochondrial tRNAs.