1DXU

HIGH-RESOLUTION X-RAY STUDY OF DEOXY RECOMBINANT HUMAN HEMOGLOBINS SYNTHESIZED FROM BETA-GLOBINS HAVING MUTATED AMINO TERMINI


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Observed: 0.160 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

High-resolution X-ray study of deoxy recombinant human hemoglobins synthesized from beta-globins having mutated amino termini.

Kavanaugh, J.S.Rogers, P.H.Arnone, A.

(1992) Biochemistry 31: 8640-8647

  • DOI: 10.1021/bi00151a034
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The crystal structures of three mutant hemoglobins reconstituted from recombinant beta chains and authentic human alpha chains have been determined in the deoxy state at 1.8-A resolution. The primary structures of the mutant hemoglobins differ at the ...

    The crystal structures of three mutant hemoglobins reconstituted from recombinant beta chains and authentic human alpha chains have been determined in the deoxy state at 1.8-A resolution. The primary structures of the mutant hemoglobins differ at the beta-chain amino terminus. One mutant, beta Met, is characterized by the addition of a methionine at the amino terminus. The other two hemoglobins are characterized by substitution of Val 1 beta with either a methionine, beta V1M, or an alanine, beta V1A. All the mutation-induced structural perturbations are small intrasubunit changes that are localized to the immediate vicinity of the beta-chain amino terminus. In the beta Met and beta V1A mutants, the mobility of the beta-chain amino terminus increases and the electron density of an associated inorganic anion is decreased. In contrast, the beta-chain amino terminus of the beta V1M mutant becomes less mobile, and the inorganic anion binds with increased affinity. These structural differences can be correlated with functional data for the mutant hemoglobins [Doyle, M. L., Lew, G., DeYoung, A., Kwiatkowski, L., Noble, R. W., & Ackers, G. K. (1992) Biochemistry preceding paper is this issue] as well as with the properties of ruminant hemoglobins and a mechanism [Perutz, M., & Imai, K. (1980) J. Mol. Biol. 136, 183-191] that relates the intrasubunit interactions of the beta-chain amino terminus to changes in oxygen affinity. Since the structures of the mutant deoxyhemoglobins show only subtle differences from the structure of deoxyhemoglobin A, it is concluded that any of the three hemoglobins could probably function as a surrogate for hemoglobin A.(ABSTRACT TRUNCATED AT 250 WORDS)


    Related Citations: 
    • Functional Properties of Human Hemoglobins Synthesized from Recombinant Mutant Beta-Globins
      Doyle, M.L., Lew, G., Deyoung, A., Kwiatkowski, L., Wierzbra, A., Noble, R.W., Ackers, G.K.
      (1992) Biochemistry 31: 8629

    Organizational Affiliation

    Department of Biochemistry, University of Iowa, Iowa City 52242.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HEMOGLOBIN (DEOXY) (ALPHA CHAIN)A, C141Homo sapiensMutation(s): 0 
Gene Names: HBA1HBA2
Find proteins for P69905 (Homo sapiens)
Explore P69905 
Go to UniProtKB:  P69905
NIH Common Fund Data Resources
PHAROS  P69905
Protein Feature View
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  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
HEMOGLOBIN (DEOXY) (BETA CHAIN)B, D146Homo sapiensMutation(s): 0 
Gene Names: HBB
Find proteins for P68871 (Homo sapiens)
Explore P68871 
Go to UniProtKB:  P68871
NIH Common Fund Data Resources
PHAROS  P68871
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 CCD File 
A, B, C, D
PROTOPORPHYRIN IX CONTAINING FE
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
SO4
Query on SO4

Download CCD File 
B, D
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Observed: 0.160 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.2α = 90
b = 83.6β = 99.3
c = 53.8γ = 90
Software Package:
Software NamePurpose
PROLSQrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1993-10-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance