Determination of the Neurospora crassa CYS 3 sulfur regulatory protein consensus DNA-binding site: amino-acid substitutions in the CYS3 bZIP domain that alter DNA-binding specificity.

Abstract excerpt

CYS3 is the positive-acting global regulatory protein involved in the sulfur control circuit in Neurospora crassa and belongs to the family of bZIP DNA-binding proteins. Here we report a characterization of native DNA-binding sites recognized by CYS3. DNA footprinting experiments and systematic mutational analysis were used to define the consensus CYS3-binding sequence, 5'-ATGPuPyPuPyCAT, a 10-bp palindrome. The...

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