4MZT image
Deposition Date 2013-09-30
Release Date 2014-05-21
Last Version Date 2023-09-20
Entry Detail
PDB ID:
4MZT
Keywords:
Title:
MazF from S. aureus crystal form II, C2221, 2.3 A
Biological Source:
Source Organism:
Host Organism:
Method Details:
Experimental Method:
Resolution:
2.30 Å
R-Value Free:
0.24
R-Value Work:
0.19
R-Value Observed:
0.19
Space Group:
C 2 2 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:MazF mRNA interferase
Gene (Uniprot):mazF
Chain IDs:A, B
Chain Length:133
Number of Molecules:2
Biological Source:Staphylococcus aureus subsp. aureus
Primary Citation
Structural and biophysical characterization of Staphylococcus aureus SaMazF shows conservation of functional dynamics.
Nucleic Acids Res. 42 6709 6725 (2014)
PMID: 24748664 DOI: 10.1093/nar/gku266

Abstact

The Staphylococcus aureus genome contains three toxin-antitoxin modules, including one mazEF module, SamazEF. Using an on-column separation protocol we are able to obtain large amounts of wild-type SaMazF toxin. The protein is well-folded and highly resistant against thermal unfolding but aggregates at elevated temperatures. Crystallographic and nuclear magnetic resonance (NMR) solution studies show a well-defined dimer. Differences in structure and dynamics between the X-ray and NMR structural ensembles are found in three loop regions, two of which undergo motions that are of functional relevance. The same segments also show functionally relevant dynamics in the distantly related CcdB family despite divergence of function. NMR chemical shift mapping and analysis of residue conservation in the MazF family suggests a conserved mode for the inhibition of MazF by MazE.

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Primary Citation of related structures