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Crystal structure of lpg1832, a VirK family protein from Legionella pneumophila, reveals a novel fold for bacterial VirK proteins.
- Source :
-
FEBS Letters . Sep2017, Vol. 591 Issue 18, p2929-2935. 7p. - Publication Year :
- 2017
-
Abstract
- VirK family [Pfam06903] consists of 14 bacterial VirK proteins of around 145 residues in length. The function of this family is unknown. Herein, using single-wavelength anomalous diffraction, we determined the crystal structure of lpg1832, a VirK family protein from Legionella pneumophila, at 2.0 Å resolution. This is the first structural determination of a VirK domain-containing protein. Lpg1832 is a type II secretion system-dependent extracellular protein that folds into a novel barrel-shaped structure. It is found to adopt a quaternary assembly comprising a homotetramer. The three-dimensional structure of lpg1832 provides the first structural information pertaining to the VirK family and allows us to possibly identify its functionally important regions. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00145793
- Volume :
- 591
- Issue :
- 18
- Database :
- Academic Search Index
- Journal :
- FEBS Letters
- Publication Type :
- Academic Journal
- Accession number :
- 125320439
- Full Text :
- https://doi.org/10.1002/1873-3468.12773