activities of the enzymes glutamine synthetase ( ec 6.3.1.2 . ) , glucosamine 6-phosphate acetyltransferase ( ec 2.3.1.4 . ) , uridine 5'-diphosphate ( udp ) -n-acetylglucosamine pyrophosphorylase ( ec 2.7.23 . ) , udp-n-acetylglucosamine 4-epimerase ( ec 5.1.3.7 . ) , fructose 1,6-diphosphate phosphatase ( ec 3.13.11 . ) , l-glutamine-fructose 6-phosphate transamidase ( ec 5.3.1.19 . ) , alkaline phosphatase ( ec 3.1.3.1 . ) , and malic dehydrogenase ( ec 1.1.1.37 ) were assayed in partially purified extracts prepared at different stages of myxospore formation and germination in liquid cultures of myxococcus xanthus .
C0031678
phosphatase
C0020289
ec 3