3.6.5.4 A142W site-directed mutagenesis, the mutant cpSRP54 exhibits the same GTP-dependent complex assembly kinetics as wild-type cpSRP54 718911 3.6.5.4 A143L site-directed mutagenesis, mutant cpSRP54 GTP-dependent complex assembly kinetics compared to the wild-type cpSRP54, overview 718911 3.6.5.4 A143W mutant, GTPase activation defective 687905 3.6.5.4 A143W site-directed mutagenesis, mutant cpSRP54 GTP-dependent complex assembly kinetics compared to the wild-type cpSRP54, overview 718911 3.6.5.4 A144W mutant, GTPase activation defective 687905 3.6.5.4 A145S substitution introduced into the putative GTP binding motif GXXGXGK 684117 3.6.5.4 A168W site-directed mutagenesis, mutant cpSRP54 GTP-dependent complex assembly kinetics compared to the wild-type cpSRP54, overview 718911 3.6.5.4 A169L site-directed mutagenesis, mutant cpSRP54 GTP-dependent complex assembly kinetics compared to the wild-type cpSRP54, overview 718911 3.6.5.4 A169W site-directed mutagenesis, mutant cpSRP54 GTP-dependent complex assembly kinetics compared to the wild-type cpSRP54, overview 718911 3.6.5.4 A192D reduced GTP hydrolysis, no effect on the interaction with FtsY 658538