Analysis of phosphorylated proteins and inhibition of kinase activity during Giardia intestinalis excystation
Analysis of phosphorylated proteins and inhibition of kinase activity during Giardia intestinalis excystation
复制标题
DOI：
10.1016/j.parint.2009.10.005
复制
发表时间：
2010-03-01
影响因子：
1.9
通讯作者：
Wasserman, Moises
中科院分区：
文献类型：
--
作者：
Alvarado, Magda E.;Wasserman, Moises
The parasite Giardia intestinalis undergoes a differentiation process that allows it to infect its mammal host. That process is excystation. We examined the importance of protein phosphorylation during the passage from cyst to trophozoite. Cysts obtained from patients with giardiasis were excysted in vitro and the soluble cytoplasmic proteins were analyzed during the three phases of the process, using a specific staining for phosphoproteins. We found two phosphorylated proteins and identified them with MALDI-TOF as 14-3-3 and Hsp70. Modifications were detected in both proteins, which could indicate a role in differentiation of the parasite. In addition, the inhibition of serine-threonine kinases during excystation specifically affected the cytokinesis of the excyzoite, thus inhibiting the completion of trophozoite formation. (C) 2009 Elsevier Ireland Ltd. All rights reserved.
