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. 1992 Dec;22(6):479-82.
doi: 10.1007/BF00326413.

Evolutionary analysis of the plastid-encoded gene for the alpha subunit of the DNA-dependent RNA polymerase of Pyrenomonas salina (Cryptophyceae)

M Maerz  1 , S Rensing, G L Igloi, U G Maier
Affiliations

Evolutionary analysis of the plastid-encoded gene for the alpha subunit of the DNA-dependent RNA polymerase of Pyrenomonas salina (Cryptophyceae)

M Maerz et al. Curr Genet. 1992 Dec.

Abstract

The nucleotide sequence of the gene coding for the plastid-encoded alpha subunit of DNA-dependent RNA polymerase from the cryptomonad alga Pyrenomonas salina was determined. The deduced amino-acid sequence, corresponding to a 35.2 kDa polypeptide, was compared to homologues from other organisms. Evolutionary relationships were analyzed in detail by the parsimony method together with bootstrap analysis. The deduced phylogenetic tree shows that the cryptomonad gene is the most ancient type of known plastid-encoded RNA polymerase.

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