Crystal Structure of Human Myoglobin Mutant K45R

Experimental Data Snapshot

  • Resolution: 1.65 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.176 

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X-ray crystal structure of a recombinant human myoglobin mutant at 2.8 A resolution

Hubbard, S.R.Lambright, S.G.Boxer, S.G.Hendrickson, W.A.

(1990) J Mol Biol 20: 215-218

  • DOI: https://doi.org/10.1016/S0022-2836(05)80181-0
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    We have grown crystals in trigonal space group P3(2)21 of a mutant human myoglobin, aquomet form, in which lysine at position 45 has been replaced by arginine and cysteine at position 110 has been replaced by alanine. Suitable crystals of native recombinant human myoglobin have not been obtained. We have used the molecular replacement method to determine the X-ray crystal structure of the mutant at 2.8 A resolution. At the present stage of refinement, the crystallographic R-value for the model, with tightly restrained stereochemistry, is 0.158 for 5.0 to 2.8 A data. As expected, the overall structure is quite similar to the sperm whale myoglobin structure. Arginine 45 adopts a well-ordered conformation similar to that found in aquomet sperm whale myoglobin.

  • Organizational Affiliation

    Howard Hughes Medical Institute, Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY 10032.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Myoglobin153Homo sapiensMutation(s): 2 
Gene Names: MB
UniProt & NIH Common Fund Data Resources
Find proteins for P02144 (Homo sapiens)
Explore P02144 
Go to UniProtKB:  P02144
PHAROS:  P02144
GTEx:  ENSG00000198125 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02144
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.65 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.176 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 86.2α = 90
b = 86.2β = 90
c = 35.66γ = 120
Software Package:
Software NamePurpose

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Entry History 

Deposition Data

  • Released Date: 2011-04-27 
  • Deposition Author(s): Hubbard, S.R.
  • This entry supersedes: 2MM1

Revision History  (Full details and data files)

  • Version 1.0: 2011-04-27
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2023-09-13
    Changes: Data collection, Database references, Derived calculations, Refinement description