Protein Information

ID 20
Name isocitrate dehydrogenase
Synonyms ICD M; IDH; IDP; NADP(+) specific ICDH; Oxalosuccinate decarboxylase; IDH 2; IDH2; IDHM…

Compound Information

ID 955
Name TCA
CAS 2,2,2-trichloroacetic acid

Reference

PubMed Abstract RScore(About this table)
16362493 Jung IL, Kim SK, Kim IG: The RpoS-mediated regulation of isocitrate dehydrogenase gene expression in Escherichia coli. Curr Microbiol. 2006 Jan;52(1):21-6. Epub 2005 Dec 13.
The Escherichia coli NADP (+)-dependent isocitrate dehydrogenase (IDH; EC 1.1.1.42), encoded by an icd gene, is a tricarboxylic acid (TCA) cycle enzyme responsible for the oxidative decarboxylation of isocitrate to alpha-ketoglutarate. In order to examine how the icd gene expression is regulated, an icd-lacZ reporter fusion was constructed. While the icd gene was induced in exponential growth phase, it was repressed in stationary growth phase. Genetic inactivation of an rpoS gene, whose product is an alternative sigma factor, induced the icd gene expression approximately 4.8 times more in the stationary phase and the IDH enzyme activity in the rpoS mutant was 3.2 times higher than that in the wild type, indicating that the RpoS factor acts as a negative regulator of the icd gene expression in the stationary phase.
2(0,0,0,2)