Reaction participants Show >> << Hide
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Namehelp_outline
(3R)-hydroxy-5-methylhexanoyl-[ACP]
Identifier
RHEA-COMP:14095
Reactive part
help_outline
- Name help_outline O-(S-3R-hydroxy-5-methylhexanoylpantetheine-4ʼ-phosphoryl)-L-serine residue Identifier CHEBI:78986 Charge -1 Formula C21H37N3O10PS SMILEShelp_outline CC(C)C[C@@H](O)CC(=O)SCCNC(=O)CCNC(=O)[C@H](O)C(C)(C)COP([O-])(=O)OC[C@H](N-*)C(-*)=O 2D coordinates Mol file for the small molecule Search links Involved in 2 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
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Namehelp_outline
(2E)-5-methylhexenoyl-[ACP]
Identifier
RHEA-COMP:14097
Reactive part
help_outline
- Name help_outline O-[S-(2E)-5-methylhexenoylpantetheine-4ʼ-phosphoryl]serine residue Identifier CHEBI:138610 Charge -1 Formula C21H35N3O9PS SMILEShelp_outline C(NC(CCNC(=O)[C@@H](C(COP(OC[C@@H](C(*)=O)N*)(=O)[O-])(C)C)O)=O)CSC(/C=C/CC(C)C)=O 2D coordinates Mol file for the small molecule Search links Involved in 2 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H2O Identifier CHEBI:15377 (Beilstein: 3587155; CAS: 7732-18-5) help_outline Charge 0 Formula H2O InChIKeyhelp_outline XLYOFNOQVPJJNP-UHFFFAOYSA-N SMILEShelp_outline [H]O[H] 2D coordinates Mol file for the small molecule Search links Involved in 6,048 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:55128 | RHEA:55129 | RHEA:55130 | RHEA:55131 | |
|---|---|---|---|---|
| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
| UniProtKB help_outline |
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Publications
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Beta-ketoacyl-acyl carrier protein synthase III (FabH) is a determining factor in branched-chain fatty acid biosynthesis.
Choi K.-H., Heath R.J., Rock C.O.
A universal set of genes encodes the components of the dissociated, type II, fatty acid synthase system that is responsible for producing the multitude of fatty acid structures found in bacterial membranes. We examined the biochemical basis for the production of branched-chain fatty acids by gram- ... >> More
A universal set of genes encodes the components of the dissociated, type II, fatty acid synthase system that is responsible for producing the multitude of fatty acid structures found in bacterial membranes. We examined the biochemical basis for the production of branched-chain fatty acids by gram-positive bacteria. Two genes that were predicted to encode homologs of the beta-ketoacyl-acyl carrier protein synthase III of Escherichia coli (eFabH) were identified in the Bacillus subtilis genome. Their protein products were expressed, purified, and biochemically characterized. Both B. subtilis FabH homologs, bFabH1 and bFabH2, carried out the initial condensation reaction of fatty acid biosynthesis with acetyl-coenzyme A (acetyl-CoA) as a primer, although they possessed lower specific activities than eFabH. bFabH1 and bFabH2 also utilized iso- and anteiso-branched-chain acyl-CoA primers as substrates. eFabH was not able to accept these CoA thioesters. Reconstitution of a complete round of fatty acid synthesis in vitro with purified E. coli proteins showed that eFabH was the only E. coli enzyme incapable of using branched-chain substrates. Expression of either bFabH1 or bFabH2 in E. coli resulted in the appearance of a branched-chain 17-carbon fatty acid. Thus, the substrate specificity of FabH is an important determinant of branched-chain fatty acid production. << Less
J. Bacteriol. 182:365-370(2000) [PubMed] [EuropePMC]
This publication is cited by 22 other entries.