1N5U

X-RAY STUDY OF HUMAN SERUM ALBUMIN COMPLEXED WITH HEME


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.235 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The Atomic Structure of Human Methemalbumin at 1.9 A

Wardell, M.Wang, Z.Ho, J.X.Robert, J.Ruker, F.Ruble, J.Carter, D.C.

(2002) Biochem.Biophys.Res.Commun. 291: 813-819

  • DOI: 10.1006/bbrc.2002.6540

  • PubMed Abstract: 
  • The high resolution structure of hemalbumin was determined by single crystal X-ray diffraction to a resolution of 1.9 A. The structure revealed the protoporphyrin IX bound to a single site within a hydrophobic cavity in subdomain IB, one of the princ ...

    The high resolution structure of hemalbumin was determined by single crystal X-ray diffraction to a resolution of 1.9 A. The structure revealed the protoporphyrin IX bound to a single site within a hydrophobic cavity in subdomain IB, one of the principal binding sites for long chain fatty acid. The iron is penta coordinated with the fifth ligand comprised of the hydroxyl oxygen of Tyr-161 (phenolic oxygen to heme plane distance: 2.73 A) in an otherwise completely hydrophobic pocket. The heme propionic acid residues form salt bridges with His-142 and Lys-190, which together with a series of hydrophobic interactions, enclose and secure the heme within the IB helical motif. A detailed discussion of the structure together with its implications for the development of potential blood substitutes is presented.


    Related Citations: 
    • Structure of Human Serum Albumin
      Carter, D.C.,He, X.M.
      (1990) Science 249: 302
    • Three-Dimensional Structure of Human Serum Albumin
      Carter, D.C.,He, X.M.,Munson, S.H.,Twigg, P.D.,Gernert, K.M.,Broom, M.B.,Miller, T.Y.
      (1989) Science 244: 1195
    • Preliminary Crystallographic Studies of Four Crystal Forms of Serum Albumin
      Carter, D.C.,Chang, B.,Ho, J.X.,Keeling, K.,Krishnasami, Z.
      (1994) Eur.J.Biochem. 226: 1049
    • Atomic Structure and Chemistry of Human Serum Albumin
      He, X.M.,Carter, D.C.
      (1992) Nature 358: 209


    Organizational Affiliation

    New Century Pharmaceuticals, Inc., 895 Martin Road, Huntsville, Alabama 35824, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SERUM ALBUMIN
A
585Homo sapiensGene Names: ALB
Find proteins for P02768 (Homo sapiens)
Go to Gene View: ALB
Go to UniProtKB:  P02768
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MYR
Query on MYR

Download SDF File 
Download CCD File 
A
MYRISTIC ACID
C14 H28 O2
TUNFSRHWOTWDNC-UHFFFAOYSA-N
 Ligand Interaction
HEM
Query on HEM

Download SDF File 
Download CCD File 
A
PROTOPORPHYRIN IX CONTAINING FE
HEME
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.235 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 183.116α = 90.00
b = 37.909β = 105.04
c = 94.832γ = 90.00
Software Package:
Software NamePurpose
MERLOTphasing
CNXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-06-24
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance