The domain within your query sequence starts at position 258 and ends at position 334; the E-value for the 3f1i domain shown below is 4e-29.

YIDEGKMDRALQILQSIDPKESKPDSQDLLDLEDVCQQMGPMIDEKLEEIDRKHSELSEL
NVKVLEALDLYNKLVNE

This is a PDB domain - please see the PDBSUM entry of 3f1i for further annotation