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. 1977 Jul;60(1):89–94. doi: 10.1104/pp.60.1.89

Evolutionary Conservation of Chloroplast Genes Coding for the Large Subunits of Fraction 1 Protein

Shain-Dow Kung 1, Ching-Ing Lee 1, Denise D Wood 2, Mario A Moscarello 2
PMCID: PMC542554  PMID: 16660051

Abstract

Crystalline fraction 1 protein, obtained from four species of Nicotiana, have identical polypeptide compositions and isoelectric points. However, the tryptic peptide map of the large subunit of this protein from N. knightiana and N. paniculata differs from that of N. tomentosa and N. tomentosiformis. Since the large subunits of fraction 1 protein are coded by chloroplast DNA, the difference in their primary structure reflects the structural changes of the chloroplast genes containing the coding information. This indicates that the rate of mutation of chloroplast DNA seems to be higher than predicated from the analysis of isoelectric points of this protein.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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