1HGA

HIGH RESOLUTION CRYSTAL STRUCTURES AND COMPARISONS OF T STATE DEOXYHAEMOGLOBIN AND TWO LIGANDED T-STATE HAEMOGLOBINS: T(ALPHA-OXY)HAEMOGLOBIN AND T(MET)HAEMOGLOBIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Observed: 0.200 

wwPDB Validation   3D Report Full Report


This is version 2.2 of the entry. See complete history


Literature

High resolution crystal structures and comparisons of T-state deoxyhaemoglobin and two liganded T-state haemoglobins: T(alpha-oxy)haemoglobin and T(met)haemoglobin.

Liddington, R.Derewenda, Z.Dodson, E.Hubbard, R.Dodson, G.

(1992) J Mol Biol 228: 551-579

  • DOI: https://doi.org/10.1016/0022-2836(92)90842-8
  • Primary Citation of Related Structures:  
    1HGA, 1HGB, 1HGC

  • PubMed Abstract: 

    The origin of co-operativity in haemoglobin (Hb) resides in the reduced affinity of the T-state. T-state Hb crystals grown from polyethyleneglycol can be liganded without the molecule switching to the R high affinity state. X-ray analysis of T-state alpha-oxy Hb and T-state met Hb has identified the structural basis for reduced affinity. The nature of the chemical tension at the haem environment is different in the alpha and beta haems. There are small but definite structural changes associated with ligation in the T-state: these prove to be mostly in the same direction as the larger changes that occur in the T-->R transition.


  • Organizational Affiliation

    Department of Chemistry, University of York, Heslington.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
HEMOGLOBIN (DEOXY) (ALPHA CHAIN)
A, C
141Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P69905 (Homo sapiens)
Explore P69905 
Go to UniProtKB:  P69905
PHAROS:  P69905
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP69905
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
HEMOGLOBIN (DEOXY) (BETA CHAIN)
B, D
146Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P68871 (Homo sapiens)
Explore P68871 
Go to UniProtKB:  P68871
PHAROS:  P68871
GTEx:  ENSG00000244734 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP68871
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Observed: 0.200 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 95.78α = 90
b = 97.78β = 90
c = 65.49γ = 90
Software Package:
Software NamePurpose
PROLSQrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1994-01-31
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2012-10-17
    Changes: Advisory
  • Version 1.4: 2014-11-19
    Changes: Derived calculations
  • Version 2.0: 2023-02-08
    Type: Remediation
    Changes: Atomic model, Data collection, Database references, Derived calculations, Other
  • Version 2.1: 2023-03-15
    Changes: Advisory
  • Version 2.2: 2024-05-22
    Changes: Data collection