(Q54698245)
Statements
Substitution of lysine at position 104 or 240 of TEM-1pTZ18R beta-lactamase enhances the effect of serine-164 substitution on hydrolysis or affinity for cephalosporins and the monobactam aztreonam. (English)
Sowek JA
Singer SB
Ohringer S
Malley MF
Dougherty TJ
Gougoutas JZ
Bush K
1 April 1991
30
13
3179-3188