4B4Y

crystal structure of the neuroglobin from the photosymbiotic marine acoel Symsagittifera roscoffensis


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.215 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Neuroglobins: Pivotal Proteins Associated with Emerging Neural Systems and Precursors of Metazoan Globin Diversity.

Lechauve, C.Jager, M.Laguerre, L.Kiger, L.Correc, G.Leroux, C.Vinogradov, S.Czjzek, M.Marden, M.C.Bailly, X.

(2013) J.Biol.Chem. 288: 6957

  • DOI: 10.1074/jbc.M112.407601

  • PubMed Abstract: 
  • Neuroglobins, previously thought to be restricted to vertebrate neurons, were detected in the brain of a photosymbiotic acoel, Symsagittifera roscoffensis, and in neurosensory cells of the jellyfish Clytia hemisphaerica. For the neuroglobin of S. ros ...

    Neuroglobins, previously thought to be restricted to vertebrate neurons, were detected in the brain of a photosymbiotic acoel, Symsagittifera roscoffensis, and in neurosensory cells of the jellyfish Clytia hemisphaerica. For the neuroglobin of S. roscoffensis, a member of a lineage that originated either at the base of the bilateria or of the deuterostome clade, we report the ligand binding properties, crystal structure at 2.3 Å, and brain immunocytochemical pattern. We also describe in situ hybridizations of two neuroglobins specifically expressed in differentiating nematocytes (neurosensory cells) and in statocytes (ciliated mechanosensory cells) of C. hemisphaerica, a member of the early branching animal phylum cnidaria. In silico searches using these neuroglobins as queries revealed the presence of previously unidentified neuroglobin-like sequences in most metazoan lineages. Because neural systems are almost ubiquitous in metazoa, the constitutive expression of neuroglobin-like proteins strongly supports the notion of an intimate association of neuroglobins with the evolution of animal neural systems and hints at the preservation of a vitally important function. Neuroglobins were probably recruited in the first protoneurons in early metazoans from globin precursors. Neuroglobins were identified in choanoflagellates, sponges, and placozoans and were conserved during nervous system evolution. Because the origin of neuroglobins predates the other metazoan globins, it is likely that neuroglobin gene duplication followed by co-option and subfunctionalization led to the emergence of globin families in protostomes and deuterostomes (i.e. convergent evolution).


    Organizational Affiliation

    INSERM, UMR S 968, Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR)_7210, Institut de la Vision Université Pierre et Marie Curie (UPMC)/Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts, 17 rue Moreau, 75012 Paris, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NEUROGLOBIN
A
154Symsagittifera roscoffensisN/A
Find proteins for L7MTK4 (Symsagittifera roscoffensis)
Go to UniProtKB:  L7MTK4
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
OXY
Query on OXY

Download SDF File 
Download CCD File 
A
OXYGEN MOLECULE
O2
MYMOFIZGZYHOMD-UHFFFAOYSA-N
 Ligand Interaction
HEM
Query on HEM

Download SDF File 
Download CCD File 
A
PROTOPORPHYRIN IX CONTAINING FE
HEME
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.215 
  • Space Group: P 62 2 2
Unit Cell:
Length (Å)Angle (°)
a = 97.070α = 90.00
b = 97.070β = 90.00
c = 140.100γ = 120.00
Software Package:
Software NamePurpose
XDSdata reduction
SHELXDphasing
REFMACrefinement
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-01-09
    Type: Initial release
  • Version 1.1: 2013-01-16
    Type: Database references
  • Version 1.2: 2013-03-27
    Type: Database references
  • Version 1.3: 2015-04-29
    Type: Data collection