ArticleMolecular genetics and genomics : MGG2009
MlcR, a zinc cluster activator protein, is able to bind to a single (A/T)CGG site of cognate asymmetric motifs in the ML-236B (compactin) biosynthetic gene cluster.
Article in Molecular genetics and genomics : MGG, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
All of the binding sequences for MlcR, a transcriptional activator of ML-236B (compactin) biosynthetic genes in Penicillium citrinum, were identified by an in vitro gel-shift assay. All the identified sequences contain an asymmetric direct repeat comprised of conserved tetrad bases (A/T)CGG with a spacer sequence of high similarity; in particular, G at position 2 and T at position 3 in the spacer are well conserved. The first (A/T)CGG repeat was essential for MlcR-binding and MlcR could bind to this monomeric site, probably as a monomer. This binding feature might enable MlcR to tolerate the variation of the spacer length and compositions in vitro. From these data, we propose that the consensus binding motif for MlcR is an asymmetric direct repeat, 5'-(A/T)CGG-NGTN(3-6)-TCGG-3'.
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