title: Purification, crystallization and preliminary crystallographic analysis of the adhesion domain of Epf from Streptococcus pyogenes.
abstract: The extracellular protein Epf from Streptococcus pyogenes is important for streptococcal adhesion to human epithelial cells. However, Epf has no sequence identity to any protein of known structure or function. Thus, several predicted domains of the 205 kDa protein Epf were cloned separately and expressed in Escherichia coli. The N-terminal domain of Epf was crystallized in space groups P2(1) and P2(1)2(1)2(1) in the presence of the protease chymotrypsin. Mass spectrometry showed that the species crystallized corresponded to a fragment comprising residues 52-357 of Epf. Complete data sets were collected to 2.0 and 1.6 Å resolution, respectively, at the Australian Synchrotron.
authors: School of Biological Sciences and Maurice Wilkins Centre, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
authors: Christian
authors: C
authors: Linke
authors: Nikolai
authors: N
authors: Siemens
authors: Martin J
authors: MJ
authors: Middleditch
authors: Bernd
authors: B
authors: Kreikemeyer
authors: Edward N
authors: EN
authors: Baker
mesh_terms: D018829:Adhesins, Bacterial / Q000737:chemistry* / Q000302:isolation & purification; D001426:Bacterial Proteins / Q000737:chemistry* / Q000302:isolation & purification; D003460:Crystallization; D018360:Crystallography, X-Ray; D013297:Streptococcus pyogenes / Q000737:chemistry*
chemical_list: D018829:Adhesins, Bacterial; D001426:Bacterial Proteins