DNA binding specificity and sequence of Xanthomonas campestris catabolite gene activator protein-like protein.
The Xanthomonas campestris catabolite gene activator protein-like protein (CLP) can substitute for the Escherichia coli catabolite gene activator protein (CAP) in transcription activation at the lac promoter (V. de Crecy-Lagard, P. Glaser, P. Lejeune, O. Sismeiro, C. Barber, M. Daniels, and A. Danchin, J. Bacteriol. 172:5877-5883, 1990). We show that CLP has the same DNA binding specificity as CAP at positions 5, 6, and 7 of the DNA half site. In addition, we show that the amino acids at positions 1 and 2 of the recognition helix of CLP are identical to the amino acids at positions 1 and 2 of the recognition helix of CAP:i.e., Arg at position 1 and Glu at position 2.
Dong
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Department of Chemistry, Rutgers University, New Brunswick, New Jersey 08855.
Ebright
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D000595:Amino Acid Sequence; D001426:Bacterial Proteins; D001483:Base Sequence; D002373:Cyclic AMP Receptor Protein / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D004269:DNA, Bacterial / Q000378:metabolism*; D004268:DNA-Binding Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D008969:Molecular Sequence Data; D012689:Sequence Homology, Nucleic Acid; D013379:Substrate Specificity; D014157:Transcription Factors; D014158:Transcription, Genetic; D014974:Xanthomonas / Q000378:metabolism*
D001426:Bacterial Proteins; D002373:Cyclic AMP Receptor Protein; D004269:DNA, Bacterial; D004268:DNA-Binding Proteins; D014157:Transcription Factors; C075973:CAP-like protein, Xanthomonas campestris