The domain within your query sequence starts at position 1 and ends at position 327; the E-value for the 3dad domain shown below is 1e-127.

MATLACRVQFLDDTDPFNSTNFPEPSRPPLFTFREDLALGTQLAGVHRLLRAPHKLDDCT
LQLSHNGAYLDLEATLAEQRDELEGFQDDTGRGKKNSIILRTQLSVRVHACIEKLYNSSG
RDLRRALFSLKQIFQDDKDLVHEFVIAEGLTCLIKVGAEADQNYQNYILRALGQIMLYVD
GMNGVINHSETIQWLYTLVGSKFRLVVKTALKLLLVFVEYSESNAPLLIQAVSAVDTKRG
VKPWSNIMEILEEKDGVDTELLVYAMTLVNKTLAGLPDQDTFYDVVDCLEELGIAAVSQR
HLNKKGTDLDLLEQFNIYEVALRHEDG

This is a PDB domain - please see the PDBSUM entry of 3dad for further annotation