In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.

Acetoacetate decarboxylase ( ADC ) ( EC4 . 1 . 1 . 4 ) of Clostridium acetobutylicum DSM 792 was purified to homogeneity , and its first 25 N - terminal amino acids were determined .
Acetoacetate decarboxylase