5HSP

MamM CTD M250L


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.79 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.202 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Disease-Homologous Mutation in the Cation Diffusion Facilitator Protein MamM Causes Single-Domain Structural Loss and Signifies Its Importance.

Barber-Zucker, S.Uebe, R.Davidov, G.Navon, Y.Sherf, D.Chill, J.H.Kass, I.Bitton, R.Schuler, D.Zarivach, R.

(2016) Sci Rep 6: 31933-31933

  • DOI: https://doi.org/10.1038/srep31933
  • Primary Citation of Related Structures:  
    5HSP

  • PubMed Abstract: 

    Cation diffusion facilitators (CDF) are highly conserved, metal ion efflux transporters that maintain divalent transition metal cation homeostasis. Most CDF proteins contain two domains, the cation transporting transmembrane domain and the regulatory cytoplasmic C-terminal domain (CTD). MamM is a magnetosome-associated CDF protein essential for the biomineralization of magnetic iron-oxide particles in magnetotactic bacteria. To investigate the structure-function relationship of CDF cytoplasmic domains, we characterized a MamM M250P mutation that is synonymous with the disease-related mutation L349P of the human CDF protein ZnT-10. Our results show that the M250P exchange in MamM causes severe structural changes in its CTD resulting in abnormal reduced function. Our in vivo, in vitro and in silico studies indicate that the CTD fold is critical for CDF proteins' proper function and support the previously suggested role of the CDF cytoplasmic domain as a CDF regulatory element. Based on our results, we also suggest a mechanism for the effects of the ZnT-10 L349P mutation in human.


  • Organizational Affiliation

    Department of Life Sciences and The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer Sheva, 8410501, Israel.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Magnetosome protein MamMA,
B [auth D]
125Magnetospirillum gryphiswaldenseMutation(s): 1 
Gene Names: mamMmgI491MGR_4095
UniProt
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
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.79 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.202 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 37.832α = 90
b = 94.914β = 90
c = 53.685γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
Aimlessdata scaling
PHASERphasing
XDSdata reduction

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
The Israel Ministry of Science, Technology and SpaceIsrael--

Revision History  (Full details and data files)

  • Version 1.0: 2016-11-30
    Type: Initial release
  • Version 1.1: 2018-03-07
    Changes: Data collection
  • Version 1.2: 2019-10-16
    Changes: Data collection, Derived calculations
  • Version 1.3: 2024-01-10
    Changes: Data collection, Database references, Refinement description