The HIS3 gene, found in the Saccharomyces cerevisiae yeast, encodes a protein called Imidazoleglycerol-phosphate dehydratase which catalyses the sixth step in histidine biosynthesis.
The hisB gene, found in the enterobacteria (such as E. coli), in Campylobacter jejuni and in Xylella/Xanthomonas encodes a protein involved in catalysis of two step in histidine biosynthesis (the sixth and eight step), namely the bifunctional Imidazoleglycerol-phosphate dehydratase/histidinol-phosphatase.
phosphate | Nicotinamide adenine dinucleotide phosphate | Phosphate | British Phosphate Commission | Imidazoleglycerol-phosphate dehydratase | Glucose-6-phosphate dehydrogenase deficiency | Ribose-5-phosphate isomerase deficiency | Phosphate minerals | Phosphate conversion coating | Pentose phosphate pathway | Nauru Phosphate Corporation | N-acetylglucosamine-1-phosphate transferase | lithium iron phosphate | isopropylmalate dehydratase | Glucose-6-phosphate dehydrogenase | Dihydroxyacetone phosphate | Dicalcium phosphate | dehydratase | 3-Isopropylmalate dehydratase |