The domain within your query sequence starts at position 1 and ends at position 220; the E-value for the 4bl7 domain shown below is 1e-118.

MRLFVSEGSPGSLPVLAAAARARGRAELLISTVGPEECVVPFLTRPKVPVLQLDSGNYLF
SASAICRYFFLLCGWEQDDLTNQWLEWEATELQPVLSAALHCLVVQGKKGEDILGPLRRV
LTHIDHSLSRQNCPFLAGDTESLADIVLWGALYPLLQDPAYLPEELGALQSWFQTLSTQE
PCQRAAETVLKQQGVLALRLYLQKQPQPQPPPPEGRTVSN

This is a PDB domain - please see the PDBSUM entry of 4bl7 for further annotation