Saved Bookmarks
| 1. |
Removal of phosphoryl groups is catalyzed by ___________(a) Diphteria toxin and cholera toxin(b) Dinitrogenase reductase(c) Protein phosphatases(d) Protein kinases |
|
Answer» Correct choice is (c) Protein phosphatases Best explanation: The enzymes that catalyze the ADP-ribosylation and inactivation of key cellular enzymes or proteins are diphteria toxin and cholera toxin. Dinitrogenase reductase is responsible for the regulation of biological nitrogen fixation. The attachment of phosphoryl groups to specific amino acid residues is catalyzed by protein kinases. |
|