Isolation of ftsI and murE genes involved in peptidoglycan synthesis from Corynebacterium glutamicum
Copyright policy )Isolation of ftsI and murE genes involved in peptidoglycan synthesis from Corynebacterium glutamicum
Corynebacterium glutamicum is known to excrete large amounts of L-glutamic acid upon treatment by penicillin. However, the mechanism of L-glutamate overproduction by penicillin treatment is still unknown. A 5.3-kb HindIII fragment was isolated by directly introducing the C. glutamicum (Brevibacterium lactofermentum) ATCC 13869 gene library into the temperature-sensitive Escherichia coli murE mutant and selecting temperature resistant clones. Two open reading frames (ORFs) were found in this fragment: (1) murE, encoding UDP-N-acetylmuramoyl-L-alanyl-D-glutamate:meso-diaminopimelate ligase, and (2)ftsI, encoding septum-peptidoglycan synthetase, one of the targets of penicillin (penicillin-binding protein 3). Both ORFs were involved in peptidoglycan synthesis. Proteins were synthesized from the C. glutamicum murE and ftsI genes, 55 kDa and 73 kDa respectively, in an in vitro protein synthesis system, using E. coli S30 extracts.
DNA, Bacterial, 570, Escherichia coli Proteins, Molecular Sequence Data, Peptidoglycan, Corynebacterium, Muramoylpentapeptide Carboxypeptidase, Bacterial Proteins, Hexosyltransferases, Genes, Bacterial, Multienzyme Complexes, Mutation, Peptidyl Transferases, Penicillin-Binding Proteins, Peptidoglycan Glycosyltransferase, Peptide Synthases, Carrier Proteins
DNA, Bacterial, 570, Escherichia coli Proteins, Molecular Sequence Data, Peptidoglycan, Corynebacterium, Muramoylpentapeptide Carboxypeptidase, Bacterial Proteins, Hexosyltransferases, Genes, Bacterial, Multienzyme Complexes, Mutation, Peptidyl Transferases, Penicillin-Binding Proteins, Peptidoglycan Glycosyltransferase, Peptide Synthases, Carrier Proteins
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