SCO6564, a novel 3-ketoacyl acyl carrier protein synthase III, contributes in fatty acid synthesis in Streptomyces coelicolor.

The genus Streptomyces comprises gram-positive bacteria that produce large numbers of secondary metabolites, which have promising commercial applications and deserve extensive study. Most bacteria synthesize fatty acids using a type II fatty acid synthase, with each step catalyzed by a discrete prot...

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Main Authors: Jian-Rong Ma, Jia-Ying Lin, Yuan-Yin Zhang, Yun Chen, Wen-Bing Zhang, Xian-Pu Ni, Yong-Hong Yu
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2025-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0318258
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author Jian-Rong Ma
Jia-Ying Lin
Yuan-Yin Zhang
Yun Chen
Wen-Bing Zhang
Xian-Pu Ni
Yong-Hong Yu
author_facet Jian-Rong Ma
Jia-Ying Lin
Yuan-Yin Zhang
Yun Chen
Wen-Bing Zhang
Xian-Pu Ni
Yong-Hong Yu
author_sort Jian-Rong Ma
collection DOAJ
description The genus Streptomyces comprises gram-positive bacteria that produce large numbers of secondary metabolites, which have promising commercial applications and deserve extensive study. Most bacteria synthesize fatty acids using a type II fatty acid synthase, with each step catalyzed by a discrete protein. Fatty acid synthesis has been intensively studied in the model strain Streptomyces coelicolor, in which 3-ketoacyl-acyl carrier protein synthase III (KAS III, FabH) is essential for growth and fatty acid biosynthesis. In this study, the FabH homolog SCO6564 (named FabH2) was identified in the S. coelicolor genome by BLAST analysis. The expression of fabH2 restored the growth of Ralstonia solanacearum fabH mutant and made the mutant produce small amounts of branched-chain fatty acids. FabH2 could condense various substrates, including straight-chain and branched-chain acyl-CoAs, with malonyl-acyl carrier protein to initiate fatty acid synthesis in in vitro assays. The fabH2 deletion did not cause significant changes in the growth or fatty acid composition of S. coelicolor, indicating that fabH2 is nonessential for growth or fatty acid synthesis. However, fabH2 overexpression reduced the blue-pigmented actinorhodin production. Phylogenetic analysis of KAS III from different bacteria revealed that FabH2 belongs to a novel group of FabH-type, which is ubiquitous in Streptomyces spp.
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spelling doaj-art-da7a02e35c904495beb8624f9d55c85a2025-02-12T05:30:54ZengPublic Library of Science (PLoS)PLoS ONE1932-62032025-01-01202e031825810.1371/journal.pone.0318258SCO6564, a novel 3-ketoacyl acyl carrier protein synthase III, contributes in fatty acid synthesis in Streptomyces coelicolor.Jian-Rong MaJia-Ying LinYuan-Yin ZhangYun ChenWen-Bing ZhangXian-Pu NiYong-Hong YuThe genus Streptomyces comprises gram-positive bacteria that produce large numbers of secondary metabolites, which have promising commercial applications and deserve extensive study. Most bacteria synthesize fatty acids using a type II fatty acid synthase, with each step catalyzed by a discrete protein. Fatty acid synthesis has been intensively studied in the model strain Streptomyces coelicolor, in which 3-ketoacyl-acyl carrier protein synthase III (KAS III, FabH) is essential for growth and fatty acid biosynthesis. In this study, the FabH homolog SCO6564 (named FabH2) was identified in the S. coelicolor genome by BLAST analysis. The expression of fabH2 restored the growth of Ralstonia solanacearum fabH mutant and made the mutant produce small amounts of branched-chain fatty acids. FabH2 could condense various substrates, including straight-chain and branched-chain acyl-CoAs, with malonyl-acyl carrier protein to initiate fatty acid synthesis in in vitro assays. The fabH2 deletion did not cause significant changes in the growth or fatty acid composition of S. coelicolor, indicating that fabH2 is nonessential for growth or fatty acid synthesis. However, fabH2 overexpression reduced the blue-pigmented actinorhodin production. Phylogenetic analysis of KAS III from different bacteria revealed that FabH2 belongs to a novel group of FabH-type, which is ubiquitous in Streptomyces spp.https://doi.org/10.1371/journal.pone.0318258
spellingShingle Jian-Rong Ma
Jia-Ying Lin
Yuan-Yin Zhang
Yun Chen
Wen-Bing Zhang
Xian-Pu Ni
Yong-Hong Yu
SCO6564, a novel 3-ketoacyl acyl carrier protein synthase III, contributes in fatty acid synthesis in Streptomyces coelicolor.
PLoS ONE
title SCO6564, a novel 3-ketoacyl acyl carrier protein synthase III, contributes in fatty acid synthesis in Streptomyces coelicolor.
title_full SCO6564, a novel 3-ketoacyl acyl carrier protein synthase III, contributes in fatty acid synthesis in Streptomyces coelicolor.
title_fullStr SCO6564, a novel 3-ketoacyl acyl carrier protein synthase III, contributes in fatty acid synthesis in Streptomyces coelicolor.
title_full_unstemmed SCO6564, a novel 3-ketoacyl acyl carrier protein synthase III, contributes in fatty acid synthesis in Streptomyces coelicolor.
title_short SCO6564, a novel 3-ketoacyl acyl carrier protein synthase III, contributes in fatty acid synthesis in Streptomyces coelicolor.
title_sort sco6564 a novel 3 ketoacyl acyl carrier protein synthase iii contributes in fatty acid synthesis in streptomyces coelicolor
url https://doi.org/10.1371/journal.pone.0318258
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