The domain within your query sequence starts at position 549 and ends at position 637; the E-value for the 1nst domain shown below is 2e-38.

LQTLPPAQLAHKYFELFPDQKDPLWQNPCDDKRHRDIWSKEKTCDRLPKFLVIGPQKTGT
TALCLFLIMHPSILSNSPSPKSFEEVHGF

This is a PDB domain - please see the PDBSUM entry of 1nst for further annotation