Identification of BlaR, the signal transducer for beta-lactamase production in Bacillus licheniformis, as a penicillin-binding protein with strong homology to the OXA-2 beta-lactamase (class D) of Salmonella typhimurium.
The blaR gene of Bacillus licheniformis encodes the signal transducer for induction of the class A beta-lactamase. The protein product, BlaR, has a hydrophilic carboxy region that binds beta-lactams and shows high sequence homology to the class D beta-lactamases, particularly the OXA-2 beta-lactamase of Salmonella typhimurium. The BlaR-beta-lactam complex is stable and may provide the continuing stimulus needed for the prolonged production of the enzyme.
Zhu
Y F
YF
Waksman Institute, Rutgers, State University of New Jersey, Piscataway 08855-0759.
Curran
I H
IH
Joris
B
B
Ghuysen
J M
JM
Lampen
J O
JO
D000595:Amino Acid Sequence; D001407:Bacillus / Q000201:enzymology / Q000235:genetics* / Q000378:metabolism; D001426:Bacterial Proteins; D002352:Carrier Proteins / Q000235:genetics* / Q000378:metabolism; D004790:Enzyme Induction; D005798:Genes, Bacterial; D005822:Genetic Vectors; D006602:Hexosyltransferases; D008969:Molecular Sequence Data; D002267:Muramoylpentapeptide Carboxypeptidase / Q000235:genetics* / Q000378:metabolism; D046915:Penicillin-Binding Proteins; D010458:Peptidyl Transferases; D015183:Restriction Mapping; D012486:Salmonella typhimurium / Q000201:enzymology / Q000235:genetics*; D012689:Sequence Homology, Nucleic Acid; D015398:Signal Transduction; D001618:beta-Lactamases / Q000096:biosynthesis* / Q000235:genetics*
D001426:Bacterial Proteins; D002352:Carrier Proteins; D046915:Penicillin-Binding Proteins; D010458:Peptidyl Transferases; D006602:Hexosyltransferases; D002267:Muramoylpentapeptide Carboxypeptidase; C039404:beta-lactamase OXA-2; D001618:beta-Lactamases