Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 9.71 kDa 
• Atom Count: 816 
• Modelled Residue Count: 77 
• Deposited Residue Count: 78 
• Unique protein chains: 1

 1L0I

Crystal structure of butyryl-ACP I62M mutant

• PDB DOI: 10.2210/pdb1L0I/pdb

• Classification: LIPID TRANSPORT
• Organism(s): Escherichia coli
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2002-02-11 Released: 2003-02-11 
• Deposition Author(s): Roujeinikova, A., Baldock, C., Simon, W.J., Gilroy, J., Baker, P.J., Stuitje, A.R., Rice, D.W., Slabas, A.R., Rafferty, J.B.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.20 Å
• R-Value Free: 0.193 
• R-Value Work: 0.160 

Literature

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.

(2002) Structure 10: 825-835

• PubMed: 12057197 
• DOI: 10.1016/s0969-2126(02)00775-x
• Primary Citation of Related Structures:  
  1L0H, 1L0I


• PubMed Abstract: 
  

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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Related Citations: 

• Crystallisation and preliminary X-ray crystallographic studies on acyl-(acyl carrier protein) from Escherichia coli
  Roujeinikova, A., Baldock, C., Simon, W.J., Gilroy, J., Baker, P.J., Stuitje, A.R., Rice, D.W., Rafferty, J.B., Slabas, A.R.
  (2002) Acta Crystallogr D Biol Crystallogr 58: 330

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Organizational Affiliation: 

Krebs Institute for Biomolecular Research, Department of Molecular Biology and Biotechnology, The University of Sheffield, S10 2TN, Sheffield, United Kingdom.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Acyl carrier protein	A	78	Escherichia coli	Mutation(s): 1
UniProt
Find proteins for P0A6A8 (Escherichia coli (strain K12)) Explore P0A6A8  Go to UniProtKB:  P0A6A8

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PSR	K [auth A]	THIOBUTYRIC ACID S-{2-[3-(2-HYDROXY-3,3-DIMETHYL-4-PHOSPHONOOXY-BUTYRYLAMINO)-PROPIONYLAMINO]-ETHYL} ESTER C15 H29 N2 O8 P S PZIQDUSGQUZEBS-CYBMUJFWSA-N
CAC	D [auth A]	CACODYLATE ION C2 H6 As O2 OGGXGZAMXPVRFZ-UHFFFAOYSA-M
ZN	C [auth A], E [auth A], F [auth A], G [auth A], H [auth A], I [auth A], J [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
NA	B [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.20 Å
• R-Value Free: 0.193 
• R-Value Work: 0.160 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 27.347	α = 90
b = 41.941	β = 90
c = 64.533	γ = 90

Software Package:

Software Name	Purpose
Adxv	data processing
DENZO	data reduction
SCALEPACK	data scaling
warpntrace	model building
SHELXL-97	refinement
WARPNTRACE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-02-11 
Deposition Author(s): Roujeinikova, A., Baldock, C., Simon, W.J., Gilroy, J., Baker, P.J., Stuitje, A.R., Rice, D.W., Slabas, A.R., Rafferty, J.B.

Revision History  

• Version 1.0: 2003-02-11
  Type: Initial release
  
• Version 1.1: 2008-04-28
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Non-polymer description, Version format compliance
• Version 1.3: 2017-10-11
  Changes: Advisory, Refinement description
• Version 1.4: 2021-10-27
  Changes: Advisory, Database references, Derived calculations