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Article

The atypical codon usage of the plant psbA gene may be the remnant of an ancestral bias.

Proceedings of the National Academy of Sciences of the United States of America - 14 Oct 1997

Morton B R, Levin J A

Abstract excerpt

The psbA gene of the chloroplast genome has a codon usage that is unusual for plant chloroplast genes. In the present study the evolutionary status of this codon usage is tested by reconstructing putative ancestral psbA sequences to determine the pattern of change in codon bias during angiosperm...

Topics

Base Sequence
Bias
Chloroplasts
Codon
Evolution, Molecular
Genes, Plant
Genetic Variation
Magnoliopsida
Molecular Sequence Data
Photosynthetic Reaction Center Complex Proteins
Photosystem II Protein Complex
Plants

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Identifiers

PMID: 9326627
DOI: 10.1073/pnas.94.21.11434
PMCID: PMC23492

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 30 Aug 2026. Prepared record publication-9326627-2026-08-30.1. Manifest publication-graph-cohort-2026-08-30.1.

Source receipt: PubMed via Helena Literature Corpus, retrieved 30 Aug 2026.

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