1C40

BAR-HEADED GOOSE HEMOGLOBIN (AQUOMET FORM)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.197 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Avian haemoglobins and structural basis of high affinity for oxygen: structure of bar-headed goose aquomet haemoglobin.

Liu, X.Z.Li, S.L.Jing, H.Liang, Y.H.Hua, Z.Q.Lu, G.Y.

(2001) Acta Crystallogr.,Sect.D 57: 775-783


  • PubMed Abstract: 
  • Haemoglobin from the bar-headed goose (Anser indicus) has higher oxygen affinity than that from its lowland relatives such as greylag goose (A. anser). The crystal structure of bar-headed goose aquomet haemoglobin was determined at 2.3 A resolution a ...

    Haemoglobin from the bar-headed goose (Anser indicus) has higher oxygen affinity than that from its lowland relatives such as greylag goose (A. anser). The crystal structure of bar-headed goose aquomet haemoglobin was determined at 2.3 A resolution and compared with the structures of the goose oxy, human, horse and other avian haemoglobins and the sequences of other avian haemoglobins. Four amino-acid residues differ between greylag goose and bar-headed goose haemoglobins, among which Alaalpha119 and Aspbeta125 in bar-headed goose haemoglobin reduces the contacts between the alpha(1) and beta(1) subunits compared with Pro and Glu, respectively, and therefore may increase the oxygen affinity by loosening the alpha(1)beta(1) interface. Compared with human oxy haemoglobin, the relative orientation of two alphabeta dimers in the bar-headed goose aquomet and oxy Hbs are rotated by about 4 degrees, indicating a unique quaternary structural difference from the typical R state. This new 'R(H)' state is probably correlated with the higher oxygen affinity of bar-headed goose haemoglobin.


    Organizational Affiliation

    National Laboratory of Protein Engineering and Plant Genetic Engineering, College of Life Sciences, Peking University, Beijing 100871, People's Republic of China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (HEMOGLOBIN (ALPHA CHAIN))
A
141Anser indicusGene Names: HBAA
Find proteins for P01990 (Anser indicus)
Go to UniProtKB:  P01990
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (HEMOGLOBIN (BETA CHAIN))
B
146Anser indicusGene Names: HBB
Find proteins for P02118 (Anser indicus)
Go to Gene View: HBB
Go to UniProtKB:  P02118
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
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: 2.3 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.197 
  • Space Group: P 42 21 2
Unit Cell:
Length (Å)Angle (°)
a = 81.497α = 90.00
b = 81.497β = 90.00
c = 107.200γ = 90.00
Software Package:
Software NamePurpose
X-GENdata reduction
PHASERphasing
X-GENdata scaling
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-08-09
    Type: Initial release
  • Version 1.1: 2008-04-26
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-04
    Type: Refinement description