Title of article :
Crystal Structure of CagZ, a Protein from the Helicobacter pylori Pathogenicity Island that Encodes for a Type IV Secretion System
Author/Authors :
Laura Cendron، نويسنده , , Anke Seydel، نويسنده , , Alessandro Angelini، نويسنده , , Roberto Battistutta، نويسنده , , Giuseppe Zanotti، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2004
Abstract :
CagZ, a 23 kDa protein encoded by the cagZ gene (HP0526) of the cag pathogenicity island of Helicobacter pylori, has been cloned, over-expressed, purified and its three-dimensional structure determined. The protein consists of a single compact L-shaped domain, composed of seven α-helices including about 70% of the total residues. Three-dimensional homology searches did not reveal structural homologues, and CagZ can be considered representative of a new protein fold. The presence of a disordered C-terminal tail and the nature of the molecular surface suggest that CagZ may participate in the interaction of effector proteins with one or more components of the H. pylori type IV secretion system on the cytoplasmic side of the inner membrane.
Keywords :
Helicobacter pylori , HP0526 , cag pathogenicity island , Type IV secretion system , CagZ
Journal title :
Journal of Molecular Biology
Journal title :
Journal of Molecular Biology