作者: Keisuke Ito , Sohei Ito , Tatsuro Shimamura , Yasuaki Kawarasaki , Keiko Abe
DOI: 10.1107/S1744309110029714
关键词: Glucansucrase 、 Crystallization 、 Pathogen 、 Strain (chemistry) 、 Streptococcus mutans 、 Chemistry 、 Glycoside hydrolase 、 Escherichia coli 、 Microbiology 、 X ray analysis
摘要: Glucansucrases encoded by Streptococcus mutans play essential roles in the synthesis of sticky dental plaques. Based on amino-acid sequence similarity, glucansucrases are classified as members glycoside hydrolase family 70 (GH 70). Data crystal structure GH have yet to be reported. Here, glucansucrase GTF-SI from S. was overexpressed Escherichia coli strain BL21 (DE3), purified homogeneity and crystallized using hanging-drop vapour-diffusion method. Orthorhombic crystals belonging space group P21212 were obtained. A diffraction data set collected 2.1 A resolution.