4MU5

Crystal structure of murine neuroglobin mutant M144W


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.201 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Engineering the internal cavity of neuroglobin demonstrates the role of the haem-sliding mechanism.

Avella, G.Ardiccioni, C.Scaglione, A.Moschetti, T.Rondinelli, C.Montemiglio, L.C.Savino, C.Giuffre, A.Brunori, M.Vallone, B.

(2014) Acta Crystallogr D Biol Crystallogr 70: 1640-1648

  • DOI: 10.1107/S1399004714007032
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Neuroglobin is a member of the globin family involved in neuroprotection; it is primarily expressed in the brain and retina of vertebrates. Neuroglobin belongs to the heterogeneous group of hexacoordinate globins that have evolved in animals, plants ...

    Neuroglobin is a member of the globin family involved in neuroprotection; it is primarily expressed in the brain and retina of vertebrates. Neuroglobin belongs to the heterogeneous group of hexacoordinate globins that have evolved in animals, plants and bacteria, endowed with the capability of reversible intramolecular coordination, allowing the binding of small gaseous ligands (O2, NO and CO). In a unique fashion among haemoproteins, ligand-binding events in neuroglobin are dependent on the sliding of the haem itself within a preformed internal cavity, as revealed by the crystal structure of its CO-bound derivative. Point mutants of the neuroglobin internal cavity have been engineered and their functional and structural characterization shows that hindering the haem displacement leads to a decrease in CO affinity, whereas reducing the cavity volume without interfering with haem sliding has negligible functional effects.


    Organizational Affiliation

    Istituto Pasteur-Fondazione Cenci Bolognetti and Istituto di Biologia e Patologia Molecolari del CNR, Dipartimento di Scienze Biochimiche `A. Rossi Fanelli', Sapienza Università di Roma, Piazzale A. Moro 5, 00185 Rome, Italy.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NeuroglobinA154Mus musculusMutation(s): 3 
Gene Names: Ngb
Find proteins for Q9ER97 (Mus musculus)
Explore Q9ER97 
Go to UniProtKB:  Q9ER97
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
PROTOPORPHYRIN IX CONTAINING FE
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
SO4
Query on SO4

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.201 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 87.636α = 90
b = 87.636β = 90
c = 115.217γ = 120
Software Package:
Software NamePurpose
DNAdata collection
PHASERphasing
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-06-18
    Type: Initial release
  • Version 1.1: 2014-09-24
    Changes: Database references