Genome-wide analysis of the role of the antibiotic biosynthesis regulator AbsA2 in Streptomyces coelicolor A3(2)

  title={Genome-wide analysis of the role of the antibiotic biosynthesis regulator AbsA2 in Streptomyces coelicolor A3(2)},
  author={Richard A. Lewis and Abdul Wahab and Giselda Bucca and Emma E Laing and Carla S. M{\"o}ller-Levet and Andrzej M. Kierzek and Colin P. Smith},
  journal={PLoS ONE},
The AbsA1-AbsA2 two component signalling system of Streptomyces coelicolor has long been known to exert a powerful negative influence on the production of the antibiotics actinorhodin, undecylprodiginine and the Calcium-Dependent Antibiotic (CDA). Here we report the analysis of a ΔabsA2 deletion strain, which exhibits the classic precocious antibiotic hyper-production phenotype, and its complementation by an N-terminal triple-FLAG-tagged version of AbsA2. The complemented and non-complemented… Expand
3 Citations
Antibiotic Production and Antibiotic Resistance: The Two Sides of AbrB1/B2, a Two-Component System of Streptomyces coelicolor
The results obtained are interesting from a biotechnological perspective since, on one hand, this TCS is a negative regulator of antibiotic production and its high degree of conservation throughout Streptomyces spp. Expand
Differential regulation of undecylprodigiosin biosynthesis in the yeast-scavenging Streptomyces strain MBK6
ABSTRACT Streptomyces are efficient chemists with a capacity to generate diverse and potent chemical scaffolds. The secondary metabolism of these soil-dwelling prokaryotes is stimulated uponExpand
The Balance Metabolism Safety Net: Integration of Stress Signals by Interacting Transcriptional Factors in Streptomyces and Related Actinobacteria
Findings indicate that cross-talks between the major transcriptional factors protect the cell metabolic balance and are proposed to define the signal integration DNA regions that assemble responses to different stress, nutritional or environmental signals. Expand


Transcriptional Regulation of Streptomyces coelicolorPathway-Specific Antibiotic Regulators by the absA andabsB Loci
The results establish that the abs genes affect production of antibiotics through regulation of expression of the antibiotic-specific regulatory genes in S. coelicolor through regulating transcript abundance from the biosynthetic and regulatory genes specific for each antibiotic. Expand
Regulation of the Streptomyces coelicolor Calcium-Dependent Antibiotic by absA, Encoding a Cluster-Linked Two-Component System
This paper has identified numerous transcriptional start sites within the CDA cluster and shown that the original antibiotic-negative mutants used to identify absA exhibit a stronger negative regulation of promoters upstream of the proposed CDA biosynthetic genes than of promoters in the clusters responsible for production of actinorhodin and undecylprodigiosin. Expand
Phosphorylated AbsA2 Negatively Regulates Antibiotic Production in Streptomyces coelicolor through Interactions with Pathway-Specific Regulatory Gene Promoters
The data suggest that AbsA2 approximately P inhibits antibiotic production by directly interfering with the expression of pathway-specific regulators of antibiotic biosynthetic gene clusters. Expand
Identification of different promoters in the absA1–absA2 two-component system, a negative regulator of antibiotic production in Streptomyces coelicolor
It is shown by different technical approaches that the absA1–absA2 operon is transcribed from at least two promoters, the first producing a read-through transcript that includes both abs a1 and absA2 genes and the second including only the abs a2 gene. Expand
Genetic and transcriptional analysis of absA, an antibiotic gene cluster‐linked two‐component system that regulates multiple antibiotics in Streptomyces coelicolor
A genetic analysis shows that the phosphorylated form of the AbsA2 response regulator (phospho‐AbsA2), generated by the cognate AbsA1 sensor histidine kinase, is required for normal growth phase regulation of antibiotic synthesis. Expand
Global negative regulation of Streptomyces coelicolor antibiotic synthesis mediated by an absA-encoded putative signal transduction system
It is proposed that the absA locus encodes a signal transduction mechanism that negatively regulates synthesis of the multiple antibiotics produced by S. coelicolor. Expand
A response-regulator-like activator of antibiotic synthesis from Streptomyces coelicolor A3(2) with an amino-terminal domain that lacks a phosphorylation pocket.
In Streptomyces coelicolor A3(2), bldA mutants that lack the tRNA for the rare leucine codon UUA fail to make the red undecylprodigiosin antibiotic complex. To find out why, red-pigmented while baldExpand
Transcriptional activation of the pathway‐specific regulator of the actinorhodin biosynthetic genes in Streptomyces coelicolor
Findings provide further evidence that the path leading to the expression of pathway‐specific activators of antibiotic biosynthesis genes in disparate Streptomyces may share evolutionarily conserved components in at least some cases, and suggests that the regulation of streptomycin production, which serves an important paradigm, may be more complex than represented by current models. Expand
Characterization of the Pathway-Specific Positive Transcriptional Regulator for Actinorhodin Biosynthesis inStreptomyces coelicolor A3(2) as a DNA-Binding Protein
Although both gene products (wild-type and mutant ActII-ORF4) showed DNA-binding activity, only the wild-type gene was capable of activating transcription of the act genes; thus, two basic functions can be differentiated within the regulatory protein. Expand
Biochemical Activities of the absA Two-Component System of Streptomyces coelicolor
The results support a model in which the phosphorylation state of AbsA2 is determined by the balance of the kinase and phosphatase activities of absA1 and where AbsA 2 approximately P represses antibiotic biosynthetic genes either directly or indirectly. Expand