2BXH

Human serum albumin complexed with indoxyl sulfate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.227 
  • R-Value Observed: 0.227 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural Basis of the Drug-Binding Specificity of Human Serum Albumin.

Ghuman, J.Zunszain, P.A.Petitpas, I.Bhattacharya, A.A.Otagiri, M.Curry, S.

(2005) J Mol Biol 353: 38

  • DOI: 10.1016/j.jmb.2005.07.075
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Human serum albumin (HSA) is an abundant plasma protein that binds a remarkably wide range of drugs, thereby restricting their free, active concentrations. The problem of overcoming the binding affinity of lead compounds for HSA represents a major ch ...

    Human serum albumin (HSA) is an abundant plasma protein that binds a remarkably wide range of drugs, thereby restricting their free, active concentrations. The problem of overcoming the binding affinity of lead compounds for HSA represents a major challenge in drug development. Crystallographic analysis of 17 different complexes of HSA with a wide variety of drugs and small-molecule toxins reveals the precise architecture of the two primary drug-binding sites on the protein, identifying residues that are key determinants of binding specificity and illuminating the capacity of both pockets for flexible accommodation. Numerous secondary binding sites for drugs distributed across the protein have also been identified. The binding of fatty acids, the primary physiological ligand for the protein, is shown to alter the polarity and increase the volume of drug site 1. These results clarify the interpretation of accumulated drug binding data and provide a valuable template for design efforts to modulate the interaction with HSA.


    Organizational Affiliation

    Biophysics Section, Division of Cell and Molecular Biology, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SERUM ALBUMIN
A, B
585Homo sapiensMutation(s): 0 
Gene Names: ALBGIG20GIG42PRO0903PRO1708PRO2044PRO2619PRO2675UNQ696/PRO1341
Find proteins for P02768 (Homo sapiens)
Go to UniProtKB:  P02768
NIH Common Fund Data Resources
PHAROS  P02768
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
IOS
Query on IOS

Download CCD File 
A, B
3-SULFOOXY-1H-INDOLE
C8 H7 N O4 S
BXFFHSIDQOFMLE-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.227 
  • R-Value Observed: 0.227 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54.71α = 81.27
b = 55.2β = 91.09
c = 119.88γ = 65.29
Software Package:
Software NamePurpose
CNSrefinement
MOSFLMdata reduction
SCALAdata scaling
CNSphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-09-22
    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