PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16061816-2 2005 We demonstrate this approach by recombining the genes coding for TEM1 beta-lactamase (BLA) and the Escherichia coli maltose binding protein (MBP) to create a family of MBP-BLA hybrids in which maltose is a positive or negative effector of beta-lactam hydrolysis. Maltose 116-123 beta-lactamase Escherichia coli 172-175 16061816-2 2005 We demonstrate this approach by recombining the genes coding for TEM1 beta-lactamase (BLA) and the Escherichia coli maltose binding protein (MBP) to create a family of MBP-BLA hybrids in which maltose is a positive or negative effector of beta-lactam hydrolysis. Maltose 193-200 beta-lactamase Escherichia coli 86-89 16061816-2 2005 We demonstrate this approach by recombining the genes coding for TEM1 beta-lactamase (BLA) and the Escherichia coli maltose binding protein (MBP) to create a family of MBP-BLA hybrids in which maltose is a positive or negative effector of beta-lactam hydrolysis. Maltose 193-200 beta-lactamase Escherichia coli 172-175 16061816-3 2005 Some of these MBP-BLA switches were effectively "on-off" in nature, with maltose altering catalytic activity by as much as 600-fold. Maltose 73-80 beta-lactamase Escherichia coli 18-21