Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

Biological assembly 1 assigned by authors and generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 68366.19 
• Atom Count: 4554 
• Residue Count: 585 
• Unique protein chains: 1

1E7H

HUMAN SERUM ALBUMIN COMPLEXED WITH HEXADECANOIC ACID (PALMITIC ACID)

• DOI: 10.2210/pdb1E7H/pdb

• Classification: PLASMA PROTEIN
• Organism(s): Homo sapiens
• Expression System: Saccharomyces cerevisiae


• Deposited: 2000-08-29 Released: 2000-12-08 
• Deposition Author(s): Bhattacharya, A.A., Gruene, T., Curry, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.43 Å
• R-Value Free: 0.272 
• R-Value Work: 0.214 

Literature

Crystallographic Analysis Reveals Common Modes of Binding of Medium and Long-Chain Fatty Acids to Human Serum Albumin

Bhattacharya, A.A., Grune, T., Curry, S.

(2000) J.Mol.Biol. 303: 721

• PubMed: 11061971 
• DOI: 10.1006/jmbi.2000.4158
• Primary Citation of Related Structures:  
  1E7I, 1E7G, 1E7F, 1E7E


• PubMed Abstract: 
  

Human serum albumin (HSA) is an abundant plasma protein that is responsible for the transport of fatty acids. HSA also binds and perturbs the pharmacokinetics of a wide range of drug compounds. Binding studies have revealed significant interactions between fatty acid and drug-binding sites on albumin but high-resolution structural information on ligand binding to the protein has been lacking. We report here a crystallographic study of five HSA-fatty acid complexes formed using saturated medium-chain and long-chain fatty acids (C10:0, C12:0, C14:0, C16:0 and C18:0). A total of seven binding sites that are occupied by all medium-chain and long-chain fatty acids have been identified, although medium-chain fatty acids are found to bind at additional sites on the protein, yielding a total of 11 distinct binding locations. Comparison of the different complexes reveals key similarities and significant differences in the modes of binding, and serves to rationalise much of the biochemical data on fatty acid interactions with albumin. The two principal drug-binding sites, in sub-domains IIA and IIIA, are observed to be occupied by fatty acids and one of them (in IIIA) appears to coincide with a high-affinity long-chain fatty acid binding site.

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Organizational Affiliation: 

Biophysics Section, Blackett Laboratory, Imperial College of Science, Technology and Medicine, London, UK.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
SERUM ALBUMIN	A	585	Homo sapiens	Mutation(s): 0  Gene Names: ALB
Find proteins for P02768 (Homo sapiens) Go to Gene View: ALB Go to UniProtKB:  P02768

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
PLM	A	PALMITIC ACID C16 H32 O2 IPCSVZSSVZVIGE-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.43 Å
• R-Value Free: 0.272 
• R-Value Work: 0.214 
• Space Group: C 1 2 1

Unit Cell:

Length (Å)	Angle (°)
a = 190.090	α = 90.00
b = 38.750	β = 104.96
c = 95.870	γ = 90.00

Software Package:

Software Name	Purpose
X-PLOR	refinement
X-PLOR	phasing
CCP4	data scaling
MOSFLM	data reduction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-08-29 
• Released Date: 2000-12-08 
• Deposition Author(s): Bhattacharya, A.A., Gruene, T., Curry, S.

Revision History 

• Version 1.0: 2000-12-08
  Type: Initial release
• Version 1.1: 2011-05-08
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance