1A4F

BAR-HEADED GOOSE HEMOGLOBIN (OXY FORM)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 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
  • Primary Citation of Related Structures:  
    1A4F

  • 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 packing of the tetramer ...

    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
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HEMOGLOBIN (ALPHA CHAIN)A141Anser indicusMutation(s): 0 
Gene Names: HBAA
UniProt
Find proteins for P01990 (Anser indicus)
Explore P01990 
Go to UniProtKB:  P01990
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01990
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
HEMOGLOBIN (BETA CHAIN)B146Anser indicusMutation(s): 0 
Gene Names: HBB
UniProt
Find proteins for P02118 (Anser indicus)
Explore P02118 
Go to UniProtKB:  P02118
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02118
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM
Download Ideal Coordinates CCD File 
C [auth A],
E [auth B]		PROTOPORPHYRIN IX CONTAINING FE
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L		 Ligand Interaction
OXY
Query on OXY
Download Ideal Coordinates CCD File 
D [auth A],
F [auth B]		OXYGEN MOLECULE
O2
MYMOFIZGZYHOMD-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Work: 0.198 
  • Space Group: P 42 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 81.59α = 90
b = 81.59β = 90
c = 107.28γ = 90
Software Package:
Software NamePurpose
AUTOMRmodel building
PROLSQrefinement
WEISdata reduction
AUTOMRphasing

Structure Validation

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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  (Full details and data files)

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