4F3V image
Deposition Date 2012-05-09
Release Date 2012-06-06
Last Version Date 2024-02-28
Entry Detail
PDB ID:
4F3V
Keywords:
PROTEIN TRANSPORT
Title:
Crystal structure of N-terminal domain of EccA1 ATPase from ESX-1 secretion system of Mycobacterium tuberculosis
Biological Source:
Source Organism:
Mycobacterium tuberculosis (Taxon ID: 1773)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.00 Å
R-Value Free:
0.21
R-Value Work:
0.17
R-Value Observed:
0.17
Space Group:
P 21 21 21
4F3V validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:ESX-1 secretion system protein EccA1
Chain IDs:A, B
Chain Length:282
Number of Molecules:2
Biological Source:Mycobacterium tuberculosis
UniProt ID:P9WPH9 Pfam ID:PF21545
Ligand Molecules
SM
SO4
Primary Citation
Crystal structure of the N-terminal domain of EccA1 ATPase from the ESX-1 secretion system of Mycobacterium tuberculosis.
Proteins 82 159 163 (2014)
PMID: 23818233 DOI: 10.1002/prot.24351

Abstact

EccA1 is an important component of the type VII secretion system (T7SS) that is responsible for transport of virulence factors in pathogenic mycobacteria. EccA1 has an N-terminal domain of unknown function and a C-terminal AAA+ (ATPases associated with various cellular activities) domain. Here we report the crystal structure of the N-terminal domain of EccA1 from Mycobacterium tuberculosis, which shows an arrangement of six tetratricopeptide repeats that may mediate interactions of EccA1 with secreted substrates. Furthermore, the size and shape of the N-terminal domain suggest its orientation in the context of a hexamer model of full-length EccA1.

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Disease

Primary Citation of related structures
4F3V