Properties of Polyphosphate Glucokinase inAchromobacter butyri

Abstract

The activities of polyphosphate glucokinase which synthesizes G-6-P from glucose and metaphosphate were found in some microorganisms. This enzyme occurred most abundantly in Micrococcus and Achromobacter and less in Brevibacterium, Aerobacter and Alcaligenes. The distribution pattern of this enzyme was closely similar to that of polyphosphate NAD kinase. Polyphosphate glucokinase in A. butyri was different from ATP-dependent glucokinase in some enzymatic properties. The potent phosphoryl donor for this enzyme was metaphosphate, and other chain or ring phosphate polymers were not utilized by this enzyme.