The domain within your query sequence starts at position 3 and ends at position 160; the E-value for the 4b3f domain shown below is 2e-80.

SSTVESFVAQQLQLLELERDAEVEERRSWQEHSSLRELQSRGVCLLKLQVSSQRTGLYGQ
RLVTFEPRKFGPAVVLPSNSFTSGDIVGLYDTNENSQLATGVLTRITQKSVTVAFDESHD
LQLNLDRENTYRLLKLANDVTYKRLKNPTLFLQHNSGP

This is a PDB domain - please see the PDBSUM entry of 4b3f for further annotation