Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

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

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

Biological Assembly 2  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

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

Biological assembly 2 assigned by authors and generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 134.33 kDa 
• Atom Count: 8650 
• Modelled Residue Count: 1154 
• Deposited Residue Count: 1170 
• Unique protein chains: 1

1E7B

Crystal structure of human serum albumin complexed with the general anesthetic halothane

• PDB DOI: 10.2210/pdb1E7B/pdb

• Classification: CARRIER PROTEIN
• Organism(s): Homo sapiens
• Expression System: Saccharomyces cerevisiae
• Mutation(s): No 


• Deposited: 2000-08-26 Released: 2001-01-17 
• Deposition Author(s): Bhattacharya, A.A., Curry, S., Franks, N.P.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.38 Å
• R-Value Free: 0.303 
• R-Value Work: 0.270 
• R-Value Observed: 0.270 

Literature

Binding of the General Anesthetics Propofol and Halothane to Human Serum Albumin. High Resolution Crystal Structures

Bhattacharya, A.A., Curry, S., Franks, N.P.

(2000) J Biol Chem 275: 38731

• PubMed: 10940303 
• DOI: 10.1074/jbc.M005460200
• Primary Citation of Related Structures:  
  1E78, 1E7A, 1E7B, 1E7C


• PubMed Abstract: 
  

Human serum albumin (HSA) is one of the most abundant proteins in the circulatory system and plays a key role in the transport of fatty acids, metabolites, and drugs. For many drugs, binding to serum albumin is a critical determinant of their distribution and pharmacokinetics; however, there have as yet been no high resolution crystal structures published of drug-albumin complexes. Here we describe high resolution crystal structures of HSA with two of the most widely used general anesthetics, propofol and halothane. In addition, we describe a crystal structure of HSA complexed with both halothane and the fatty acid, myristate. We show that the intravenous anesthetic propofol binds at two discrete sites on HSA in preformed pockets that have been shown to accommodate fatty acids. Similarly we show that the inhalational agent halothane binds (at concentrations in the pharmacologically relevant range) at three sites that are also fatty acid binding loci. At much higher halothane concentrations, we have identified additional sites that are occupied. All of the higher affinity anesthetic binding sites are amphiphilic in nature, with both polar and apolar parts, and anesthetic binding causes only minor changes in local structure.

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Organizational Affiliation: 

Biophysics Section, The Blackett Laboratory, Imperial College of Science, Technology and Medicine, London SW7 2BW, United Kingdom.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
SERUM ALBUMIN	A, B	585	Homo sapiens	Mutation(s): 0  Gene Names: ALB, GIG20, GIG42, PRO0903, PRO1708, PRO2044, PRO2619, PRO2675, UNQ696/PRO1341
UniProt & NIH Common Fund Data Resources
Find proteins for P02768 (Homo sapiens) Explore P02768  Go to UniProtKB:  P02768
PHAROS:  P02768 GTEx:  ENSG00000163631

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HLT	C [auth A], D [auth A], E [auth A], F [auth B], G [auth B], H [auth B]	2-BROMO-2-CHLORO-1,1,1-TRIFLUOROETHANE C2 H Br Cl F3 BCQZXOMGPXTTIC-SFOWXEAESA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
HLT	BindingDB:  1E7B	IC50: 2.90e+6 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.38 Å
• R-Value Free: 0.303 
• R-Value Work: 0.270 
• R-Value Observed: 0.270 
• Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 54.58	α = 81.39
b = 54.96	β = 90.79
c = 120	γ = 65.55

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-08-26 
• Released Date: 2001-01-17 
Deposition Author(s): Bhattacharya, A.A., Curry, S., Franks, N.P.

Revision History  

• Version 1.0: 2001-01-17
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2019-07-24
  Changes: Data collection