MamM-CTD H285A

Experimental Data Snapshot

  • Resolution: 1.59 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.181 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


Cation diffusion facilitators transport initiation and regulation is mediated by cation induced conformational changes of the cytoplasmic domain

Zeytuni, N.Uebe, R.Maes, M.Davidov, G.Baram, M.Raschdorf, O.Nadav-Tsubery, M.Kolusheva, S.Bitton, R.Goobes, G.Friedler, A.Miller, Y.Schuler, D.Zarivach, R.

(2014) PLoS One 9: e92141-e92141

  • DOI: https://doi.org/10.1371/journal.pone.0092141
  • Primary Citation of Related Structures:  
    3W5X, 3W5Y, 3W5Z, 3W60, 3W61, 3W62, 3W63, 3W64, 3W65, 3W66, 3W8P

  • PubMed Abstract: 

    Cation diffusion facilitators (CDF) are part of a highly conserved protein family that maintains cellular divalent cation homeostasis in all domains of life. CDF's were shown to be involved in several human diseases, such as Type-II diabetes and neurodegenerative diseases. In this work, we employed a multi-disciplinary approach to study the activation mechanism of the CDF protein family. For this we used MamM, one of the main ion transporters of magnetosomes--bacterial organelles that enable magnetotactic bacteria to orientate along geomagnetic fields. Our results reveal that the cytosolic domain of MamM forms a stable dimer that undergoes distinct conformational changes upon divalent cation binding. MamM conformational change is associated with three metal binding sites that were identified and characterized. Altogether, our results provide a novel auto-regulation mode of action model in which the cytosolic domain's conformational changes upon ligand binding allows the priming of the CDF into its transport mode.

  • Organizational Affiliation

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

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Magnetosome protein MamM108Magnetospirillum gryphiswaldense MSR-1Mutation(s): 1 
Gene Names: mamMmgI491MGR_4095
Find proteins for V6F235 (Magnetospirillum gryphiswaldense (strain DSM 6361 / JCM 21280 / NBRC 15271 / MSR-1))
Explore V6F235 
Go to UniProtKB:  V6F235
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupV6F235
Sequence Annotations
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
Query on CME
Experimental Data & Validation

Experimental Data

  • Resolution: 1.59 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.181 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 37.084α = 90
b = 95.078β = 90
c = 53.802γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
HKL-2000data reduction

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-04-16
    Type: Initial release
  • Version 1.1: 2017-11-22
    Changes: Refinement description
  • Version 1.2: 2023-11-08
    Changes: Data collection, Database references, Derived calculations, Refinement description