rbcR [correction of rcbR], a gene coding for a member of the LysR family of transcriptional regulators, is located upstream of the expressed set of ribulose 1,5-bisphosphate carboxylase/oxygenase genes in the photosynthetic bacterium Chromatium vinosum
1991; American Society for Microbiology; Volume: 173; Issue: 16 Linguagem: Inglês
10.1128/jb.173.16.5224-5229.1991
ISSN1098-5530
AutoresAlejandro M. Viale, Hirokazu Kobayashi, Takashi Akazawa, Steven Henikoff,
Tópico(s)Microbial Community Ecology and Physiology
ResumoAn open reading frame, rbcR, was identified 226 bp upstream of rbcAB, i.e., the ribulose 1,5-bisphosphate carboxylase genes expressed in the phototrophic purple bacterium Chromatium vinosum. Several features reveal that rbcR encodes a member of the LysR family of transcriptional regulators, in which an anomalous content of lysine and arginine residues (Lys/Arg anomaly) was found. The expression of rbcR in Escherichia coli as a protein fused to the N-terminal region of beta-galactosidase led to reduced expression of rbcAB. Thus, rbcR is likely to encode a trans-acting transcriptional regulator of rbcAB expression in C. vinosum.
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