S-Adenosyl-L-methionine Activates Actinorhodin Biosynthesis by Increasing Autophosphorylation of the Ser/Thr Protein Kinase AfsK in Streptomyces coelicolor A3(2)

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概要

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• S-Adenosyl-L-methionine (SAM) is one of the major methyl donors in all living organisms. The exogenous treatment with SAM leads to increased actinorhodin production in Streptomyces coelicolor A3(2). In this study, mutants from different stages of the AfsK-AfsR signal transduction cascade were used to test the possible target of SAM. SAM had no significant effect on actinorhodin production in afsK, afsR, afsS, or actII-open reading frame 4 (ORF4) mutant. This confirms that afsK plays a critical role in delivering the signal generated by exogenous SAM. The afsK-pHJL-KN mutant did not respond to SAM, suggesting the involvement of the C-terminal of AfsK in binding with SAM. SAM increased the in vitro autophosphorylation of kinase AfsK in a dose-dependent manner, and also abolished the effect of decreased actinorhodin production by a Ser/Thr kinase inhibitor, K252a. In sum, our results suggest that SAM activates actinorhodin biosynthesis in S. coelicolor M130 by increasing the phosphorylation of protein kinase AfsK.

• 社団法人 日本農芸化学会の論文

著者

• JIN Ying-Yu

  Division of Bioscience and Bioinformatics, College of Natural Science, Myongji University

• CHENG Jinhua

  Division of Bioscience and Bioinformatics, College of Natural Science, Myongji University

• YANG Seung

  Division of Bioscience and Bioinformatics, College of Natural Science, Myongji University

• MENG Lingzhu

  Division of Bioscience and Bioinformatics, College of Natural Science, Myongji University

• PALANIYANDI Sasikumar

  Division of Bioscience and Bioinformatics, College of Natural Science, Myongji University

• ZHAO Xin-Qing

  Department of Bioscience and Bioengineering, Dalian University of Technology

• SUH Joo-Won

  Division of Bioscience and Bioinformatics, College of Natural Science, Myongji University

関連論文

• S-Adenosyl-L-methionine Activates Actinorhodin Biosynthesis by Increasing Autophosphorylation of the Ser/Thr Protein Kinase AfsK in Streptomyces coelicolor A3(2)
• Hypertonic Stress Increased Extracellular ATP Levels and the Expression of Stress-Responsive Genes in Arabidopsis thaliana Seedlings
• Intracellular ATP Levels Affect Secondary Metabolite Production in Streptomyces spp.
• S-Adenosyl-L-methionine Activates Actinorhodin Biosynthesis by Increasing Autophosphorylation of the Ser/Thr Protein Kinase AfsK in Streptomyces coelicolor A3(2)
• Intracellular ATP Levels Affect Secondary Metabolite Production in Streptomyces spp.
• Phosphoprotein affinity purification identifies proteins involved in S-adenosyl-L-methionine-induced enhancement of antibiotic production in Streptomyces coelicolor
• Identification and properties of a small protein that interacts with a tobacco bZIP-type transcription factor TBZF

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