The domain within your query sequence starts at position 684 and ends at position 765; the E-value for the 2cs3 domain shown below is 7e-52.

SPMANSGPLCCTICHERLEDTHFVQCPSVPSHKFCFPCSRESIKAQGATGEVYCPSGEKC
PLVGSNVPWAFMQGEIATILAG

This is a PDB domain - please see the PDBSUM entry of 2cs3 for further annotation