1IXZ image
Deposition Date 2002-07-10
Release Date 2002-11-06
Last Version Date 2023-12-27
Entry Detail
PDB ID:
1IXZ
Keywords:
Title:
Crystal structure of the FtsH ATPase domain from Thermus thermophilus
Biological Source:
Source Organism:
Method Details:
Experimental Method:
Resolution:
2.20 Å
R-Value Free:
0.23
R-Value Work:
0.19
Space Group:
P 65
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:ATP-dependent metalloprotease FtsH
Chain IDs:A
Chain Length:254
Number of Molecules:1
Biological Source:Thermus thermophilus
Primary Citation
Hexameric ring structure of the ATPase domain of the membrane-integrated metalloprotease FtsH from Thermus thermophilus HB8
Structure 10 1415 1423 (2002)
PMID: 12377127 DOI: 10.1016/S0969-2126(02)00855-9

Abstact

FtsH is a cytoplasmic membrane-integrated, ATP-dependent metalloprotease, which processively degrades both cytoplasmic and membrane proteins in concert with unfolding. The FtsH protein is divided into the N-terminal transmembrane region and the larger C-terminal cytoplasmic region, which consists of an ATPase domain and a protease domain. We have determined the crystal structures of the Thermus thermophilus FtsH ATPase domain in the nucleotide-free and AMP-PNP- and ADP-bound states, in addition to the domain with the extra preceding segment. Combined with the mapping of the putative substrate binding region, these structures suggest that FtsH internally forms a hexameric ring structure, in which ATP binding could cause a conformational change to facilitate transport of substrates into the protease domain through the central pore.

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