首页 | 本学科首页   官方微博 | 高级检索  
   检索      


Evidence for new beta1-3 galactosyltransferase activity involved in biosynthesis of unusual N-glycan harboring T-antigen in Apis mellifera
Authors:Kimura Yoshinobu  Sakamura Sho  Ushijima Takayuki  Hama Yoichiro  Kajiura Hiroyuki  Fujiyama Kazuhito  Okihara Kiyoshi  Hashimoto Ken  Sugimoto Hiroyuki  Yamada Hideo
Institution:Department of Biofunctional Chemistry, Division of Bioscience, Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan. yosh8mar@cc.okayama-u.ac.jp
Abstract:In a previous study (Y. Kimura et al., Biosci. Biotechnol. Biochem., 70, 2583-2587, 2006), we found that new complex type N-glycans harboring Thomsen-Friedenreich antigen (Galbeta1-3GalNAc) unit occur on royal jelly glycoproteins, suggesting the involvement of a new beta1-3galactosyltransferase in the synthesis of the unusual complex type N-glycans. So far, such beta1-3galactosyltransferase activity, which can transfer galactosyl residues with the beta1-3 linkage to beta1-4 GalNAc residues in N-glycan, has not been found among any eucaryotic cells. But using GalNAc(2)GlcNAc(2)Man(3)GlcNAc(2)-PA as acceptor N-glycan, we detected the beta1-3 galactosyltransferase activity in membrane fraction prepared from honeybee cephalic portions. This result indicates that honeybee expresses a unique beta1-3 galactosyltransferase involved in biosynthesis of the unusual N-glycan containing a tumor related antigen in the hypopharyngeal gland.
Keywords:
本文献已被 PubMed 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号