The specific activity of pyruvate carboxylase [pyruvate:carbon-dioxide ligase (ADP-forming); EC 6.4.1.1] in 3T3-L1 cells increases approximately 20-fold when these cells differentiate to an ...

Carboxypeptidase A and the apoenzyme resulting from removal of its zinc atom were irradiated with X-rays in the presence and in the absence of the chemical protector cysteine. Zinc was then replaced ...