The domain within your query sequence starts at position 4 and ends at position 240; the E-value for the 3bxw domain shown below is 1e-142.

MWPLLHVLWLALVCGSVHTTLSKSDAKKAASKMLLEKTQFSDKPVQDRGLVVTDIKAEDV
VLEHRSYCSSRARERNFAGEVLGYVTPWNSHGYDVAKVFGSKFTQISPVWLQLKRRGREM
FEITGLHDVDQGWMRAVKKHAKGVRIVPRLLFEDWTYDDFRNVLDSEDEIEELSKTVAQV
AKNQHFDGFVVEVWSQLLSQKHVGLIHMLTHLAEALHQARLLVILVIPPAVTPGYVQ

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