The domain within your query sequence starts at position 25 and ends at position 231; the E-value for the 3vx8 domain shown below is 1e-39.

LQFAPFNSALDVGFWHELTQKKLNEYRLDEAPKDIKGYYYNGDSAGLPTRLTLEFSAFDM
SASTPAHCCPAMGTLHNTNTLEAFKTADKKLLLEQSANEIWEAIKSGAALENPMLLNKFL
LLTFADLKKYHFYYWFCCPALCLPESIPLIRGPVSLDQRLSPKQIQALEHAYDDLCRAEG
VTALPYFLFKYDDDTVLVSLLKHYSDF

This is a PDB domain - please see the PDBSUM entry of 3vx8 for further annotation