ISDA

Entry Detail

PDB ID:

1L0H

Keywords:

LIPID TRANSPORT

Title:

CRYSTAL STRUCTURE OF BUTYRYL-ACP FROM E.COLI

Biological Source:

Source Organism:

Escherichia coli

Host Organism:

Escherichia coli BL21(DE3)

PDB Version:

Deposition Date:

2002-02-11

Release Date:

2003-02-11

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.00 Å

R-Value Free:

0.25

R-Value Work:

0.20

Space Group:

P 63

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:ACYL CARRIER PROTEIN
Chain IDs:A
Chain Length:78
Number of Molecules:1
Biological Source:Escherichia coli

UniProt ID:P0A6A8 Pfam ID:PF00550

Ligand Molecules

Primary Citation

X-ray crystallographic studies on butyryl-ACP reveal flexibility of the structure around a putative acyl chain binding site

Roujeinikova, A, Baldock, C, Simon, W.J, Gilroy, J, Baker, P.J, Stuitje, A.R, Rice, D.W, Slabas, A.R, Rafferty, J.B, Roujeinikova, A, Baldock, C, Simon, W.J, Gilroy, J, Baker, P.J, Stuitje, A.R, Rice, D.W, Rafferty, J.B, Slabas, A.R.Show

Structure 10 825 835 (2002)

PMID: 12057197 DOI: 10.1016/S0969-2126(02)00775-X

Abstact

Acyl carrier protein (ACP) is an essential cofactor in biosynthesis of fatty acids and many other reactions that require acyl transfer steps. We have determined the first crystal structures of an acylated form of ACP from E. coli, that of butyryl-ACP. Our analysis of the molecular surface of ACP reveals a plastic hydrophobic cavity in the vicinity of the phosphopantethylated Ser36 residue that is expanded and occupied by the butyryl and beta-mercaptoethylamine moieties of the acylated 4'-phosphopantetheine group in one of our crystal forms. In the other form, the cavity is contracted, and we propose that the protein has adopted the conformation after delivery of substrate into the active site of a partner enzyme.

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