Abstract
1. 1. Pyruvate kinase of the adductor muscle of the sea mussel displays an absolute requirement for Mg2+ or Mn2+. By the use of Ca2+ or Zn2+ no enzyme activity is obtained.
2. 2. In the presence of Mn2+, in contrast to Mg2+, always hyperbolic substrate saturation curves are obtained.
3. 3.
... read more