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


View more in-depth experimental data

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