The domain within your query sequence starts at position 203 and ends at position 263; the E-value for the 3iuf domain shown below is 1e-21.

EDRDKPYACDNSFKQKHTSKAPQRVCGKRYKNRPGLSYHYAHSHLAEEEGEDKEDSRPPT
P

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