Properties of C-terminal truncated derivatives of the activator, StrR, of the streptomycin biosynthesis in Streptomyces griseus.
The StrR protein is a DNA-binding protein activating the transcription of streptomycin biosynthesis of Streptomyces griseus N2-3-11 and Streptomyces glaucescens. A putative helix-turn-helix motif located between amino acid positions 207 and 227 of the StrR protein was identified as a prerequisite for its DNA-binding properties. Although, C-terminal truncated StrR proteins were able to interact with StrR-binding sites, they failed to activate transcription from the StrR-dependent promotor strB1p. Therefore, the C-terminal domain of StrR seemed to be necessary for its function as transcriptional activator.
Thamm
S
S
Institut für Chemische Mikrobiologie, BUGH Wuppertal, Germany.
Distler
J
J
D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D004268:DNA-Binding Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D004591:Electrophoresis, Polyacrylamide Gel; D004926:Escherichia coli / Q000235:genetics / Q000378:metabolism; D015964:Gene Expression Regulation, Bacterial / Q000502:physiology; D018257:Helix-Loop-Helix Motifs / Q000235:genetics; D008969:Molecular Sequence Data; D016296:Mutagenesis / Q000502:physiology; D010957:Plasmids; D011485:Protein Binding / Q000502:physiology; D017434:Protein Structure, Tertiary; D013305:Streptomyces griseus / Q000378:metabolism*; D013307:Streptomycin / Q000096:biosynthesis*; D014157:Transcription Factors / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*
D001426:Bacterial Proteins; D004268:DNA-Binding Proteins; C098255:StrR protein, Streptomyces griseus; D014157:Transcription Factors; D013307:Streptomycin