The domain within your query sequence starts at position 587 and ends at position 646; the E-value for the 3l4f domain shown below is 2e-32.

EKSLVDTVYALKDEVQELRQDNKKMKKSLEEEQRARKDLEKLVRKVLKNMNDPAWDETNL

This is a PDB domain - please see the PDBSUM entry of 3l4f for further annotation