6BRI image
Deposition Date 2017-11-30
Release Date 2018-02-07
Last Version Date 2023-10-04
Entry Detail
PDB ID:
6BRI
Title:
RHCC with unreduced and reduced Mercury complexes
Biological Source:
Source Organism:
Host Organism:
Method Details:
Experimental Method:
Resolution:
3.27 Å
R-Value Free:
0.29
R-Value Work:
0.28
R-Value Observed:
0.28
Space Group:
P 31 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Right Handed Coiled Coil
Gene (Uniprot):Smar_1008
Chain IDs:A, B, C, D
Chain Length:52
Number of Molecules:4
Biological Source:Staphylothermus marinus F1
Primary Citation
Reductive power of the archaea right-handed coiled coil nanotube (RHCC-NT) and incorporation of mercury clusters inside protein cages.
J. Struct. Biol. 203 281 287 (2018)
PMID: 29879486 DOI: 10.1016/j.jsb.2018.05.013

Abstact

Coiled coils are well described as powerful oligomerization motifs and exhibit a large diversity of functions, including gene regulation, cell division, membrane fusion and drug extrusion. The archaea S-layer originated right-handed coiled coil -RHCC-NT- is characterized by extreme stability and is free of cysteine and histidine moieties. In the current study, we have followed a multidisciplinary approach to investigate the capacity of RHCC-NT to bind a variety of ionic complex metal ions. At the outside of the RHCC-NT, one mercury ion forms an electrostatic interaction with the S-methyl moiety of the single methionine residue present in each coil. We demonstrate that RHCC-NT is reducing and incorporating metallic mercury in the large-sized interior cavities which are lined up along the tetrameric channel.

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