1QPW

CRYSTAL STRUCTURE DETERMINATION OF PORCINE HEMOGLOBIN AT 1.8A RESOLUTION

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.211 

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This is version 1.3 of the entry. See complete history. 


Literature

Structure determination of porcine haemoglobin.

Lu, T.H., Panneerselvam, K., Liaw, Y.C., Kan, P., Lee, C.J.

(2000) Acta Crystallogr D Biol Crystallogr 56: 304-312

  • DOI: 10.1107/s0907444900000093
  • Primary Citation of Related Structures:  
    1QPW

  • PubMed Abstract: 

    • To investigate a potential candidate material for making artificial red blood cells to supplement blood transfusion, the X-ray structure of porcine haemoglobin at 1.8 A resolution was determined as part of research towards synthesizing human blood. Porci ...

    To investigate a potential candidate material for making artificial red blood cells to supplement blood transfusion, the X-ray structure of porcine haemoglobin at 1.8 A resolution was determined as part of research towards synthesizing human blood. Porcine haemoglobin was crystallized by the vapor-diffusion method, producing crystals of dimensions 0.3-0.5 mm after successive seeding. The crystals belong to the orthorhombic space group P2(1)2(1)2(1), with unit-cell parameters a = 68.10, b = 72.27, c = 114.85 A. The initial phase was determined by the molecular-replacement method, using human oxyhaemoglobin as a model. The final R factor was 21.1% for 36 820 reflections after validation of 574 water molecules. The r.m.s. deviations of bond lengths, angles, torsion angles and improper angles from their ideal values are 0.017 A, 3.0, 20.6 and 1.8 degrees, respectively. The average B factor is 33.63 A(2) for the haemoglobin molecule and 50.53 A(2) for the water molecules. The structure could be superimposed on a 2.8 A resolution structure with an r.m.s. difference of 0.59 A in main-chain atomic positions and 1. 27 A in side-chain atomic positions. Porcine and human haemoglobins are compared. A tentative model for artificial blood is proposed based on the complementarity relationship of the surface charges between haemoglobin and the surrounding cell membrane.

    Related Citations: 
    • Structure Determination of Aquomet Porcine Hemoglobin at 2.8A Resolution
      Katz, D.S., White, S.P., Huang, W., Kumar, R., Christianson, D.W.
      (1994) J Mol Biol 244: 541
    Organizational Affiliation: 

    Department of Physics, National Tsing-Hua University, Hsinchu 30043, Taiwan. thlu@phys.nthu.edu.tw



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PORCINE HEMOGLOBIN (ALPHA SUBUNIT) A, C141Sus scrofaMutation(s): 0 
Gene Names: HBA
Find proteins for P01965 (Sus scrofa)
Explore P01965 
Go to UniProtKB:  P01965
Protein Feature View
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  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PORCINE HEMOGLOBIN (BETA SUBUNIT) B, D146Sus scrofaMutation(s): 0 
Gene Names: HBB
Find proteins for P02067 (Sus scrofa)
Explore P02067 
Go to UniProtKB:  P02067
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.211 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.1α = 90
b = 72.27β = 90
c = 114.85γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-06-04
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-04
    Changes: Refinement description