title: Multiple forms of isopentenyl pyrophosphate isomerase of avian liver.
abstract: Four kinds of isopentenyl pyrophosphate isomerase were separated from avian liver homogenates by DE-52 cellulose column chromatography. These enzymes were similar in terms of optimum pH (pH 6.6) and metal ion requirement (Mn2+). They all catalyzed the specific elimination of the pro-R hydrogen at C-2 of isopentenyl pyrophosphate. However, they showed different susceptibilities to iodoacetamide and beta-mercaptoethanol.
mesh_terms: D000818:Animals; D019748:Carbon-Carbon Double Bond Isomerases; D002645:Chickens; D045782:Hemiterpenes; D006863:Hydrogen-Ion Concentration; D007527:Isoenzymes / Q000302:isolation & purification* / Q000378:metabolism; D007535:Isomerases / Q000302:isolation & purification* / Q000378:metabolism; D007700:Kinetics; D008099:Liver / Q000201:enzymology*
chemical_list: D045782:Hemiterpenes; D007527:Isoenzymes; D007535:Isomerases; D019748:Carbon-Carbon Double Bond Isomerases; C021453:isopentenyldiphosphate delta-isomerase