The domain within your query sequence starts at position 42 and ends at position 131; the E-value for the 3fxt domain shown below is 1e-42.

ELQGELDRFGGVSVHLSRHHTLHGLDAAAFRRLLQAAIQQWRSEGRIAAWLHIPILQSHF
IAPAASLGFCFHHAKPHSSTLTLWLGEGPS

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