The domain within your query sequence starts at position 1 and ends at position 339; the E-value for the 3dad domain shown below is < 1e-12.
MAGEEERGDGDPVSVVTVRVQYLEDTDPFACANFPEPRRAPTCSLDGALPLSAQIPALHR
LLGAPLKLEDCALQVSPSGYYLDPELSLEEQREMLEGFYEEISKGRKPTLILRTQLSVRV
NAILEKLYGSSGPELRRSLFSLKQIFQEDKDLVPEFVHSEGLSCLIRVGAAADHNYQSYI
LRALGQLMLFVDGMLGVVAHSETVQWLYTLCASLSRLVVKTALKLLLVFVEYSENNAPLF
IQAVNAVASATGTLPWANLVSILEEKNGADAELLVYTVTLINKTLAALPDQDSFYDVTDA
LEQQGMEALVQRFLGTAGTDVDLRTQLTLYESALRLEDG
This is a PDB domain - please see the PDBSUM entry of 3dad for further annotation