Protein
TRPL translocation defect protein 14
Organism
Drosophila melanogaster
Function
GTP-binding protein which is required for the light-dependent internalization of the TRPL ion channel from the rhabdomere on the apical surface of photoreceptor cells to the cell body and for the recycling of TRPL back to the rhabdomere in the dark. Binds to 3-phosphoinositide (PtdIns(3)P) and phosphatic acid and so may interact with membranes, particularly the early endosome membrane where PtdIns(3)P is predominantly localized. Plays a role in preventing photoreceptor degeneration.
Sequence
MATLLSNGQQSVMASTSNGQEQQRHQDEPEQQQQVEIRKSSSPKPGAMPSLKLNRMGSVSPKDKRVYKIVLTGGPCGGKTTGQSRLCTFFENLGWKVFRVPETATVLLSGGVKFSDLTEKEAYKFQENLIRTMVQIENTYFELGNSSNRNCLIICDRGVMDASAYISKDKWEKMMAGNNWNPVEMRDNRYNQILHLVSAANGAEDFYSTEDHACRSEGVDLARELDYKSAAAWVGHPYFDVIDNSTNFETKMNRMIESVCQKLGIDIGDRLQATSRKLKYLVALLPPDSEFPPFQDFDVVHHYLQSAGPKVQARLRKRGQKNHWSYIHTQRRPNVHGQARIEVKTQLTHRDYMNLLAQRDDAHFTIYKKRRCFLINNQYFQLDIYKEPGHPRCKGLVLLETYSSLTGDALKNCMPKFLNIVKEVTGDPDYSMFNLSLKEDWSTTKKFCRSATHGKQEEQSPVPAKQYHPYDENSD