Structure of earth-grown oxidized Myoglobin mutant YQR (ISS6A)

Experimental Data Snapshot

  • Resolution: 1.80 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.179 

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Ligand Structure Quality Assessment 

This is version 1.4 of the entry. See complete history


Analysis of the effect of microgravity on protein crystal quality: the case of a myoglobin triple mutant.

Miele, A.E.Federici, L.Sciara, G.Draghi, F.Brunori, M.Vallone, B.

(2003) Acta Crystallogr D Biol Crystallogr 59: 982-988

  • DOI: https://doi.org/10.1107/s0907444903005924
  • Primary Citation of Related Structures:  
    1N9F, 1N9H, 1N9I, 1N9X, 1NAZ

  • PubMed Abstract: 

    Crystals of the Met derivative of the sperm whale myoglobin triple mutant Mb-YQR [L(B10)Y, H(E7)Q and T(E10)R] were grown under microgravity conditions and on earth by vapour diffusion. A comparison of crystal quality after complete data collection and processing shows how microgravity-grown crystals diffract to better resolution and lead to considerably improved statistics for X-ray diffraction data compared with crystals grown on earth under the same conditions. The same set of experiments was reproduced on two different Spacelab missions (ISS 6A and ISS 8A) in 2001 and 2002. The structure of this mutant myoglobin, refined using data collected at ELETTRA (Trieste, Italy) from both kinds of crystals, shows that X-ray diffraction from microgravity-grown crystals leads to better defined electron-density maps as well as improved geometrical quality of the refined model. Improvement of the stereochemical parameters of a protein structure is fundamental to quantitative analysis of its function and dynamics and hence to thorough understanding of the molecular mechanisms of action.

  • Organizational Affiliation

    Dipartimento di Scienze Biochimiche and CNR Istituto di Biologia e Patologia Molecolari, Universita di Roma La Sapienza, P.le A. Moro 5, 00185 Rome, Italy.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Myoglobin154Physeter catodonMutation(s): 3 
Gene Names: Myoglobin
Find proteins for P02185 (Physeter macrocephalus)
Explore P02185 
Go to UniProtKB:  P02185
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02185
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.80 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.179 
  • Space Group: P 6
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 90.542α = 90
b = 90.542β = 90
c = 45.243γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-06-10
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-10-27
    Changes: Database references, Derived calculations
  • Version 1.4: 2023-08-16
    Changes: Data collection, Refinement description