Thymine at —5 Is Crucial for cpc Promoter Activity of Synechocystis sp. Strain PCC 6714

Author:

Imashimizu Masahiko1,Fujiwara Shoko12,Tanigawa Ryohei3,Tanaka Kan3,Hirokawa Takatsugu4,Nakajima Yuji5,Higo Junichi1,Tsuzuki Mikio12

Affiliation:

1. School of Life Science, Tokyo University of Pharmacy and Life Science, Hachioji 192-0392

2. CREST, Japan

3. Institute of Molecular and Cellular Biosciences, University of Tokyo, Bunkyo-ku, Tokyo 113-0032

4. Computational Biology Research Center, National Institute of Advanced Industrial Science and Technology, Koutou-ku, Tokyo 135-0064

5. Advanced Technology Research Center, Mitsubishi Heavy Industries, Ltd., Kanazawa-ku, Yokohama 236-8515, Japan

Abstract

ABSTRACT The levels of transcripts of the cpc operon were highly reduced in a PD-1 mutant of cyanobacterium Synechocystis sp. strain PCC 6714. This was due to a substitution of C for T that occurred at 5 bp upstream of the transcription initiation site of the cpc operon. Any substitution for T at the −5 position drastically reduced both in vivo and in vitro promoter activity in cyanobacterium Synechococcus sp. strain PCC 7942 but not the in vivo activity in Escherichia coli . This suggests that the requirement of −5T appears to be specific for a cyanobacterial RNA polymerase-promoter combination.

Publisher

American Society for Microbiology

Subject

Molecular Biology,Microbiology

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