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粗糙脉孢菌对氨基酸利用的氮调节

Nitrogen regulation of amino acid utilization by Neurospora crassa.

作者信息

DeBusk R M, Ogilvie S

出版信息

J Bacteriol. 1984 Nov;160(2):493-8. doi: 10.1128/jb.160.2.493-498.1984.

Abstract

The production of an extracellular deaminase activity involved with the utilization of amino acids as sole sources of nitrogen is under the control of the nit-2 locus of Neurospora crassa. This locus is the sole major nitrogen regulatory locus described for N. crassa and is believed to encode a positive effector required for induction of activities involved with the utilization of alternate nitrogen sources. Production of deaminase activity requires the lifting of nitrogen metabolite repression, the presence of a functional nit-2 gene product, and specific induction by amino acids. Additional parameters of enzyme production are described.

摘要

与将氨基酸作为唯一氮源利用相关的细胞外脱氨酶活性的产生,受粗糙脉孢菌nit-2基因座的控制。该基因座是已描述的粗糙脉孢菌唯一主要的氮调节基因座,据信它编码一种诱导与利用替代氮源相关活性所需的正效应物。脱氨酶活性的产生需要解除氮代谢物阻遏、存在功能性的nit-2基因产物以及氨基酸的特异性诱导。文中还描述了酶产生的其他参数。

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