1N5U

X-RAY STUDY OF HUMAN SERUM ALBUMIN COMPLEXED WITH HEME


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.235 

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Ligand Structure Quality Assessment 


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
  • Primary Citation of Related Structures:  
    1N5U

  • 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 principal binding sites for long chain fatty acid ...

    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: 
    • Atomic Structure and Chemistry of Human Serum Albumin
      He, X.M., Carter, D.C.
      (1992) Nature 358: 209
    • 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

    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SERUM ALBUMINA585Homo sapiensMutation(s): 0 
Gene Names: ALBGIG20GIG42PRO0903PRO1708PRO2044PRO2619PRO2675UNQ696/PRO1341
UniProt & NIH Common Fund Data Resources
Find proteins for P02768 (Homo sapiens)
Explore P02768 
Go to UniProtKB:  P02768
PHAROS:  P02768
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02768
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM

Download Ideal Coordinates CCD File 
G [auth A]PROTOPORPHYRIN IX CONTAINING FE
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
MYR
Query on MYR

Download Ideal Coordinates CCD File 
B [auth A],
C [auth A],
D [auth A],
E [auth A],
F [auth A]
MYRISTIC ACID
C14 H28 O2
TUNFSRHWOTWDNC-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 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
b = 37.909β = 105.04
c = 94.832γ = 90
Software Package:
Software NamePurpose
MERLOTphasing
CNXrefinement

Structure Validation

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Ligand Structure Quality Assessment 



Entry History 

Deposition Data

Revision History  (Full details and data files)

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