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MaI regulon
MaI regulon is one of the set of genes stimulated by catabolite activator protein commonly known as CAP. This genes codes for a set of Enzymes involved in metabolizing the sugar maltose,a disaccharides made of two suger units.〔Beckwith,J.R and D.Zipser,eds. 1970.The lactose operon. Plainview,NY: cold spring Harbor Laboratory Press〕 The genes encoding these enzymes are regulated together but in contrast to an Operon, they are not contiguous and are controlled by multiple promoters ==Role of CAP in the MaI regulon== Since maltose is an alternative energy source like lactose, it is not surprising that the MaI regulon is also controlled by CAP but CAP exert its influence in a novel way in this case.〔Chen,Y ''et al.'',p.67〕 A protein called ''MaIT'' also regulate the MaI promoter. This protein requires ATP and the maltose regulon inducers ''maltotriose'' for its activity. Some MaI promoter(MaLEp and MaIKp) depend on both ''MaIT'' and ''CAP''. Others (pulAp,pulCP and MaIpp) rely only on ''MaIT'' while one(MaITp) is regulated by CAP alone.〔Yanofsky,C ''et al.''(1981)〕
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「MaI regulon」の詳細全文を読む
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