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[摘要]：The TRAPP vesicle-tethering complex consists of more than 10 distinct polypeptides and is involved in protein transport. Using the C2 subunit as bait we identified SPATA4, a spermatocyte-specific protein of unknown function, as an interacting partner in a yeast two hybrid screen. Further studies indicate SPATA4 interacts with the C2 portion of the TRAPP complex. SPATA4 fractionates with both cytosolic and nuclear fractions suggesting it may have several distinct functions. SPATA4 is one of only three human proteins that contain a DUF1042 domain and we show that C2 does not interact with another one of the DUF1042 domain-containing proteins. Our results suggest a role for SPATA4 in membrane traffic and a specialized function for TRAPP in spermatocytes. Structured summary of protein interactions: C2 physically interacts with SPATA4 by two hybrid (View Interaction 1, 2) C2 physically interacts with POSTN by two hybrid (View interaction) C2L physically interacts with REPS2 by two hybrid (View interaction) C2L physically interacts with TRAPPC3 by two hybrid (View interaction) C2 physically interacts with LAP3 by two hybrid (View interaction) C2 physically interacts with SPATA4 by anti bait coimmunoprecipitation (View interaction) C2L physically interacts with SPATA22 by two hybrid (View interaction) SPATA4, C2 and C3 colocalize by cosedimentation through density gradient (View interaction) SPATA4 binds to C2 by pull down (View interaction) C2 physically interacts with TRAPPC3 by two hybrid (View interaction) C2L physically interacts with SPATA4 by anti tag coimmunoprecipitation (View interaction) C2 physically interacts with REPS2 by two hybrid (View interaction) SPATA4 and C2 physically interact by molecular sieving (View interaction) C2L physically interacts with LAP3 by two hybrid (View interaction) C2 physically interacts with SPATA22 by two hybrid (View interaction) C2L physically interacts with POSTN by two hybrid (View interaction) (C) 2011 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved. |
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