intracellular proteolytic degradation of glutamine synthetase occurs in two distinct steps in escherichia coli ( levine , r. l. , oliver , c. n. , fulks , r. m. , and stadtman , e. r. ( 1981 ) proc . natl . acad . sci . u.s.a. 78 , 2120-2124 ) .
C0597304
proteolytic
C1418943
proc