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. 1988 Sep;170(9):4136–4140. doi: 10.1128/jb.170.9.4136-4140.1988

RNA polymerase subunit homology among cyanobacteria, other eubacteria and archaebacteria.

G J Schneider 1, R Hasekorn 1
PMCID: PMC211419  PMID: 3137214

Abstract

RNA polymerase purified from vegetative cells of the cyanobacterium Anabaena sp. strain PCC 7120 contains a dissociable sigma factor and a core of five subunits: the beta', beta, and two alpha subunits characteristic of all eubacteria and an additional 66,000-molecular-weight polypeptide called gamma. Fifteen of fifteen strains of unicellular and filamentous cyanobacteria tested contained a serologically related gamma protein. Antiserum to gamma reacted with Escherichia coli beta' and the A subunit of RNA polymerase of the archaebacterium Sulfolobus acidocaldarius. Thus the evolution of the RNA polymerase beta' subunit has followed different paths in three groups of procaryotes: cyanobacteria, other eubacteria, and archaebacteria.

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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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