2KOR image
Entry Detail
PDB ID:
2KOR
Title:
NMR solution structures of 2-octenoyl-ACP from Streptomyces coelicolor Fatty Acid Synthase
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2009-09-29
Release Date:
2010-08-18
Method Details:
Experimental Method:
Conformers Calculated:
100
Conformers Submitted:
20
Selection Criteria:
structures with the lowest energy
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Acyl carrier protein
Chain IDs:A
Chain Length:81
Number of Molecules:1
Biological Source:Streptomyces coelicolor
Ligand Molecules
Primary Citation
Recognition of intermediate functionality by acyl carrier protein over a complete cycle of fatty acid biosynthesis
Chem.Biol. 17 776 785 (2010)
PMID: 20659690 DOI: 10.1016/j.chembiol.2010.05.024

Abstact

It remains unclear whether in a bacterial fatty acid synthase (FAS) acyl chain transfer is a programmed or diffusion controlled and random action. Acyl carrier protein (ACP), which delivers all intermediates and interacts with all synthase enzymes, is the key player in this process. High-resolution structures of intermediates covalently bound to an ACP representing each step in fatty acid biosynthesis have been solved by solution NMR. These include hexanoyl-, 3-oxooctanyl-, 3R-hydroxyoctanoyl-, 2-octenoyl-, and octanoyl-ACP from Streptomyces coelicolor FAS. The high-resolution structures reveal that the ACP adopts a unique conformation for each intermediate driven by changes in the internal fatty acid binding pocket. The binding of each intermediate shows conserved structural features that may ensure effective molecular recognition over subsequent rounds of fatty acid biosynthesis.

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Primary Citation of related structures