31. Inhibition of glutamate decarboxylase blocks GABA biosynthesis, leading to lower levels of the neurotransmitter. 32. Polyamine metabolism is regulated by the activity of the enzyme ornithine decarboxylase ( ODC ). 33. It is an inhibitor of histidine decarboxylase . 34. The ?-subunit of the glutaconate decarboxylase is homologous to propionyl-CoA carboxylase. 35. The normal catalytic rate of pyruvate decarboxylase is k cat = 10 s " 1. 36. The enzyme 4-hydroxybenzoate decarboxylase uses 4-hydroxybenzoate to produce phenol and CO 2. 37. Many different organisms utilize the mevalonate pathway and mevalonate diphosphate decarboxylase , but for different purposes. 38. Group III comprises prokaryotic ornithine and lysine decarboxylase and the prokaryotic biodegradative type of arginine decarboxylase. 39. Group III comprises prokaryotic ornithine and lysine decarboxylase and the prokaryotic biodegradative type of arginine decarboxylase . 40. A lunularic acid decarboxylase has been detected from the liverwort " Conocephalum conicum ".
