title: Determination of a histidine residue at the yeast orotate phosphoribosyltransferase active-site.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D001665:Binding Sites; D006639:Histidine / Q000032:analysis*; D007700:Kinetics; D009962:Orotate Phosphoribosyltransferase / Q000378:metabolism*; D010430:Pentosyltransferases / Q000378:metabolism*; D012441:Saccharomyces cerevisiae / Q000201:enzymology*
chemical_list: D000596:Amino Acids; D006639:Histidine; D010430:Pentosyltransferases; D009962:Orotate Phosphoribosyltransferase