Catalyzes the reversible transfer of high energy ATP gamma-phosphate group to L-arginine. ATP + L-arginine = ADP + H(+) + N(omega)-phospho-L-arginine Stable at pH 4.0-8.0. Stable at 30-44 degrees Celsius. Forms aggregates above 44 degrees Celsius. Muscle (at protein level). Glycosylated. Causes an allergic reaction in human. Binds to IgE in 71% of the 17 patients tested allergic to crustaceans. IgE-binding activity increases in the 44-70 degrees Celsius temperature range, but is lost at 80 degrees Celsius and above. IgE-binding activity is reduced under alkaline conditions (pH 9.0-11.0), but is increased at acidic conditions (pH 1.0-3.0). Allergenicity is reduced after 1 hour pepsin-digestion in vitro. A 4-hour digestion by pancreatic enzymes in vitro has little effect on the allergenicity. No change in allergenicity after ultrasound treatment. Reduced allergenicity after 180 s of microwave treatment or after boiling. The reduction in allergenicity is correlated with the treatment duration. Belongs to the ATP:guanido phosphotransferase family.