4.3.1.3	L-histidine	-	
4.3.1.3	L-histidine	enzyme catalyzes the formation of urocanic acid in the skin, modifies risk of basal cell carcinoma and squamous cell carcinoma	
4.3.1.3	additional information	-	
4.3.1.3	additional information	catabolite repression of enzyme biosynthesis by acetate	
4.3.1.3	additional information	deficiency of enzyme results in histidinemia	
4.3.1.3	additional information	Ser-143 is an essential active site residue in the enzyme	
4.3.1.3	additional information	histidine utilization is controlled posttranslationally by an activation cascade that involves at least two regulatory proteins	
4.3.1.3	additional information	inductive and repressive effects of carbon and nitrogen on enzyme activity in a black chernozemic soil	
4.3.1.3	additional information	pathway of histidine metabolism, enzymatical synthesis of urocanic acid	
4.3.1.3	additional information	pathway of histidine catabolism	
4.3.1.3	additional information	use of histidine as a nitrogen source is regulated by nitrogen metabolite repression control of histidase synthesis