Abstract
A cosmid clone containing closely linked beta-lactam antibiotic biosynthetic genes was isolated from a gene library of Flavobacterium sp. SC 12,154. The location within the cluster of the DNA thought to contain the gene for delta-(L-alpha-aminoadipyl)-L-cysteinyl-D-valine synthetase (ACVS), the first step in the beta-lactam antibiotic biosynthetic pathway, was identified by a novel method. This DNA facilitated the isolation, by cross-hybridization, of the corresponding DNA from Streptomyces clavuligerus ATCC 27064, Penicillium chrysogenum Oli13 and Aspergillus nidulans R153. Evidence was obtained which confirmed that the cross-hybridizing sequences contained the ACVS gene. In each case the ACVS gene was found to be closely linked to other beta-lactam biosynthetic genes and constituted part of a gene cluster.
MeSH Terms
Anti-Bacterial Agents/biosynthesis
Aspergillus nidulans/genetics
Cloning, Molecular
Cosmids
DNA, Bacterial/genetics,isolation & purification
DNA, Fungal/genetics,isolation & purification
Flavobacterium/genetics
Gene Library
Genes, Bacterial
Genes, Fungal
Multigene Family
Nucleic Acid Hybridization
Penicillium/genetics
Penicillium chrysogenum/genetics
Peptide Synthases/genetics
Restriction Mapping
Sequence Homology, Nucleic Acid
Species Specificity
Streptomyces/genetics
beta-Lactams
Chemicals
Anti-Bacterial Agents
DNA, Bacterial
DNA, Fungal
beta-Lactams
Peptide Synthases
alpha-aminoadipyl-cysteinyl-valine synthetase
Authors & Affiliations
10 authors, click to expand affiliations / ORCID
Smith D J
Department of Microbiology, University of Bristol, UK.
Burnham M K
Bull J H
Hodgson J E
Ward J M
Browne P
Brown J
Barton B
Earl A J
Turner G
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