1A4F

BAR-HEADED GOOSE HEMOGLOBIN (OXY FORM)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The crystal structure of a high oxygen affinity species of haemoglobin (bar-headed goose haemoglobin in the oxy form).

Zhang, J.Hua, Z.Tame, J.R.Lu, G.Zhang, R.Gu, X.

(1996) J.Mol.Biol. 255: 484-493

  • DOI: 10.1006/jmbi.1996.0040

  • PubMed Abstract: 
  • We have determined the crystal structure of bar-headed goose haemoglobin in the oxy form to a resolution of 2.0 A. The R-factor of the model is 19.8%. The structure is similar to human HbA, but contacts between the subunits show slightly altered pack ...

    We have determined the crystal structure of bar-headed goose haemoglobin in the oxy form to a resolution of 2.0 A. The R-factor of the model is 19.8%. The structure is similar to human HbA, but contacts between the subunits show slightly altered packing of the tetramer. Bar-headed goose blood shows a greatly elevated oxygen affinity compared to closely related species of geese. This is apparently due to a single proline to alanine mutation at the alpha 1 beta 1 interface which destabilises the T state of the protein. The beta chain N and C termini are well-localized, and together with other neighbouring basic groups they form a strongly positively charged groove at the entrance to the central cavity around the molecular dyad. The well-ordered conformation and the three-dimensional distribution of positive charges clearly indicate this area to be the inositol pentaphosphate binding site of bird haemoglobins.


    Organizational Affiliation

    College of Life Sciences Peking University, Beijing, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HEMOGLOBIN (ALPHA CHAIN)
A
141Anser indicusMutation(s): 0 
Gene Names: HBAA
Find proteins for P01990 (Anser indicus)
Go to UniProtKB:  P01990
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
HEMOGLOBIN (BETA CHAIN)
B
146Anser indicusMutation(s): 0 
Gene Names: HBB
Find proteins for P02118 (Anser indicus)
Go to Gene View: HBB
Go to UniProtKB:  P02118
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
OXY
Query on OXY

Download SDF File 
Download CCD File 
A, B
OXYGEN MOLECULE
O2
MYMOFIZGZYHOMD-UHFFFAOYSA-N
 Ligand Interaction
HEM
Query on HEM

Download SDF File 
Download CCD File 
A, B
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: 2 Å
  • R-Value Work: 0.198 
  • Space Group: P 42 21 2
Unit Cell:
Length (Å)Angle (°)
a = 81.590α = 90.00
b = 81.590β = 90.00
c = 107.280γ = 90.00
Software Package:
Software NamePurpose
WEISdata reduction
PROLSQrefinement
AUTOMRphasing
AUTOMRmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1998-01-29 
  • Released Date: 1998-04-29 
  • Deposition Author(s): Zhang, J., Gu, X.

Revision History 

  • Version 1.0: 1998-04-29
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance