An overview of the CCAAT-box binding factor in filamentous fungi: Assembly, nuclear translocation, and transcriptional enhancement
2005
Kato, M. (Nagoya Univ. (Japan))
Filamentous fungi are frequently used for the production of industrial enzymes, since they produce a variety of enzymes including polysaccharide-degrading enzymes. Among the many filamentous fungi, Aspergillus species, such as A. oryzae and A. niger, are known as strong producers of amylolytic enzymes. We have been studying on the regulatory mechanisms underlying the expression of A. oryzae amylolytic genes. Based on analyses using a hybrid model system of A. nidulans transformed by a gene encoding A. oryzae Taka-amylase A, the major amylase (taaG2), we have found that three factors, CCAAT-box binding protein, CreA, and AmyR, are involved in taaG2 gene expression and regulation. In this review, the focus is on the CCAAT-box binding protein of filamentous fungi. The assembly, nuclear translocation, and transcriptional enhancement mechanisms of the CCAAT-box binding protein are discussed.
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