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ABSTRACT:
SUBMITTER: Castresana J
PROVIDER: S-EPMC19900 | biostudies-literature | 1998 Mar
REPOSITORIES: biostudies-literature
Castresana J J Feldmaier-Fuchs G G Pääbo S S
Proceedings of the National Academy of Sciences of the United States of America 19980301 7
In the mitochondrial genome of the hemichordate Balanoglossus carnosus, the codon AAA, which is assigned to lysine in most metazoans but to asparagine in echinoderms, is absent. Furthermore, the lysine tRNA gene carries an anticodon substitution that renders its gene product unable to decode AAA codons, whereas the asparagine tRNA gene has not changed to encode a tRNA with the ability to recognize AAA codons. Thus, the hemichordate mitochondrial genome can be regarded as an intermediate in the p ...[more]