The domain within your query sequence starts at position 395 and ends at position 512; the E-value for the d1kv3a2 domain shown below is 1e-33.

PVRLQLHLVRAPMWGQDLPLMLYVQRVPVRDHVQGSVGLTVRFCAQALLHGGGTRKPFWR
HIVHLNVDFEKELQWPFLLPYSSYRDKLTDERLIRVAGIAEVEETGQFILVLKDFSLE

This is a SCOP domain - please see the SCOP entry of d1kv3a2 for further annotation