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Biol Direct. 2010 May 10;5:34. doi: 10.1186/1745-6150-5-34.

Lack of conservation of bacterial type promoters in plastids of Streptophyta.

Author information

1
Institute for Information Transmission Problems of the Russian Academy of Sciences, Moscow, 127994, Russia. lyubetsk@iitp.ru

Abstract

We demonstrate the scarcity of conserved bacterial-type promoters in plastids of Streptophyta and report widely conserved promoters only for genes psaA, psbA, psbB, psbE, rbcL. Among the reasonable explanations are: evolutionary changes of sigma subunit paralogs and phage-type RNA polymerases possibly entailing the loss of corresponding nuclear genes, de novo emergence of the promoters, their loss together with plastome genes; functional substitution of the promoter boxes by transcription activation factor binding sites.

PMID:
20459727
PMCID:
PMC2881121
DOI:
10.1186/1745-6150-5-34
[Indexed for MEDLINE]
Free PMC Article

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