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Identification and characterization of Alix/AIP1 interacting proteins from the black tiger shrimp,Penaeus monodon |
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| Authors: | P Sangsuriya J Rojtinnakorn S Senapin T W Flegel |
| Institution: | 1. Centex Shrimp, Faculty of Science, Mahidol University, Bangkok, Thailand
Department of Biotechnology, Faculty of Science, Mahidol University, Bangkok, Thailand;2. Faculty of Fisheries Technology and Aquatic Resources, Maejo University, Chiang Mai, Thailand;3. Centex Shrimp, Faculty of Science, Mahidol University, Bangkok, Thailand National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency, Klong Luang, Pathum Thani, Thailand |
| Abstract: | Apoptosis is proposed to be a major cause of death in shrimp viral infections. From our previous study, an apoptosis-related gene, Pm-Alix, was identified from the black tiger shrimp. Its expression was high in defence-related tissues including haemocytes and the lymphoid organ. To clarify its possible role in shrimp, we used Pm-Alix as bait in a yeast two-hybrid analysis to search for Alix interacting proteins in shrimp. Two cDNA sequences discovered had homology to a predicted ubiquitin C of the purple sea urchin, Strongylocentrotus purpuratus, and to a guanylyl cyclase of the red swamp crayfish, Procambarus clarkii. In vitro pull-down assays confirmed positive interaction between Pm-Alix and both proteins. Tissue distribution analysis revealed that Pm-Alix and the two binding partners were widely expressed in various tissues but more highly expressed in haemocytes. However, no significant positive or negative correlation was found in the expression of these genes as shrimp approached morbidity and death after challenge with white spot syndrome virus. Thus, the results suggested that Alix and its interacting partners did not play a direct role related to shrimp death. |
| Keywords: | Alix apoptosis guanylyl cyclase Penaeus monodon ubiquitin white spot syndrome virus |