Reference: Kang S (1993) Functional domains of the transcriptional activator NUC-1 in Neurospora crassa. Gene 130(2):259-64

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Abstract


The NUC-1 regulatory protein directly controls the transcription of these genes and how the activity enzymes in Neurospora crassa. To understand how NUC-1 regulates the transcription of these genes and how the activity of NUC-1 is modulated by other regulatory proteins, two putative functional domains of NUC-1 were analysed: the DNA-binding domain and the regulatory domain. The DNA-binding activity of NUC-1 has not been directly demonstrated; however, results of deletion analysis, sequence analysis of the nuc-1 mutant alleles, and strong sequence similarity with the Saccharomyces cerevisiae PHO4 protein strongly suggest that the basic helix-loop-helix motif of NUC-1 forms a DNA-binding domain. Deletion and mutant analyses revealed that 39 amino acid (aa) residues (aa 463 to 501), or fewer, of NUC-1 are interacting with the negative regulatory factor(s), the PREG and/or PGOV proteins.

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Journal Article | Research Support, U.S. Gov't, P.H.S.
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Kang S
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