The domain within your query sequence starts at position 18 and ends at position 126; the E-value for the 2m5b domain shown below is 1e-50.

PSPSEQQVAQDTEEVFRSYVFYLHQQEQETQGAAAPANPEMDNLPLEPNSILGQVGRQLA
LIGDDINRRYDTEFQNLLEQLQPTAGNAYELFTKIASRPAATCTAYLRV

This is a PDB domain - please see the PDBSUM entry of 2m5b for further annotation