4XI0

MamA 41-end from Desulfovibrio magneticus RS-1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.88 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.209 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

MamA as a Model Protein for Structure-Based Insight into the Evolutionary Origins of Magnetotactic Bacteria.

Zeytuni, N.Cronin, S.Lefevre, C.T.Arnoux, P.Baran, D.Shtein, Z.Davidov, G.Zarivach, R.

(2015) Plos One 10: e0130394-e0130394

  • DOI: 10.1371/journal.pone.0130394

  • PubMed Abstract: 
  • MamA is a highly conserved protein found in magnetotactic bacteria (MTB), a diverse group of prokaryotes capable of navigating according to magnetic fields - an ability known as magnetotaxis. Questions surround the acquisition of this magnetic naviga ...

    MamA is a highly conserved protein found in magnetotactic bacteria (MTB), a diverse group of prokaryotes capable of navigating according to magnetic fields - an ability known as magnetotaxis. Questions surround the acquisition of this magnetic navigation ability; namely, whether it arose through horizontal or vertical gene transfer. Though its exact function is unknown, MamA surrounds the magnetosome, the magnetic organelle embedding a biomineralised nanoparticle and responsible for magnetotaxis. Several structures for MamA from a variety of species have been determined and show a high degree of structural similarity. By determining the structure of MamA from Desulfovibrio magneticus RS-1 using X-ray crystallography, we have opened up the structure-sequence landscape. As such, this allows us to perform structural- and phylogenetic-based analyses using a variety of previously determined MamA from a diverse range of MTB species across various phylogenetic groups. We found that MamA has remained remarkably constant throughout evolution with minimal change between different taxa despite sequence variations. These findings, coupled with the generation of phylogenetic trees using both amino acid sequences and 16S rRNA, indicate that magnetotaxis likely did not spread via horizontal gene transfer and instead has a significantly earlier, primordial origin.


    Organizational Affiliation

    Department of Life Sciences and The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer Sheva, Israel.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Magnetosome protein MamA
A, B, C, D, E, F
202Desulfovibrio magneticus (strain ATCC 700980 / DSM 13731 / RS-1)Mutation(s): 4 
Gene Names: mamA
Find proteins for C4XPQ7 (Desulfovibrio magneticus (strain ATCC 700980 / DSM 13731 / RS-1))
Go to UniProtKB:  C4XPQ7
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.88 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.209 
  • Space Group: I 4
Unit Cell:
Length (Å)Angle (°)
a = 151.087α = 90.00
b = 151.087β = 90.00
c = 204.903γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
BALBESphasing
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-08-19
    Type: Initial release