6.4.1.6 ATP - 349804, 349805 6.4.1.6 ATP low activity 349805 6.4.1.6 ATP obligate requirement 349806 6.4.1.6 GTP - 349805 6.4.1.6 ITP - 349805 6.4.1.6 additional information nucleoside triphosphate required, ATP does not support acetone carboxylation 349805