1G6O image
Deposition Date 2000-11-07
Release Date 2001-01-24
Last Version Date 2024-11-20
Entry Detail
PDB ID:
1G6O
Keywords:
HYDROLASE
Title:
CRYSTAL STRUCTURE OF THE HELICOBACTER PYLORI ATPASE, HP0525, IN COMPLEX WITH ADP
Biological Source:
Source Organism:
Helicobacter pylori (Taxon ID: 210)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.50 Å
R-Value Free:
0.28
R-Value Work:
0.22
R-Value Observed:
0.22
Space Group:
P 63 2 2
1G6O validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CAG-ALPHA
Chain IDs:A, B
Chain Length:330
Number of Molecules:2
Biological Source:Helicobacter pylori
UniProt ID:Q7BK04 Pfam ID:PF00437
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
MSE A MET SELENOMETHIONINE
Ligand Molecules
ADP
PEG
Primary Citation
Crystal structure of the hexameric traffic ATPase of the Helicobacter pylori type IV secretion system.
Mol.Cell 6 1461 1472 (2000)
PMID: 11163218 DOI: 10.1016/S1097-2765(00)00142-8

Abstact

The type IV secretion system of Helicobacter pylori consists of 10--15 proteins responsible for transport of the transforming protein CagA into target epithelial cells. Secretion of CagA crucially depends on the hexameric ATPase, HP0525, a member of the VirB11-PulE family. We present the crystal structure of a binary complex of HP0525 bound to ADP. Each monomer consists of two domains formed by the N- and C-terminal halves of the sequence. ADP is bound at the interface between the two domains. In the hexamer, the N- and C-terminal domains form two rings, which together form a chamber open on one side and closed on the other. A model is proposed in which HP0525 functions as an inner membrane pore, the closure and opening of which is regulated by ATP binding and ADP release.

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Primary Citation of related structures
1G6O