Adenosine 5′-triphosphate-arginine phosphotransferase from lobster muscle. Molecular weight

Abstract
The molecular weight of arginine kinase from lobster muscle has been determined by 3 procedures ultracentrifuge analysis, gel filtration and density-gradient centrifugation. The three methods give similar results and the best estimate of the molecular weight is 37,000. The enzyme does not readily show association[long dash]dissociation phenomena. The usefulness of density gradient centrifugation for determinations of molecular weight is briefly discussed.