The domain within your query sequence starts at position 342 and ends at position 566; the E-value for the 3v42 domain shown below is 1e-144.

KLTGFKSLRHMRQVLGAPSFRMLAWHVLMGNQVIWKSRDVNLVHSAFEVLRTMLPVGCVR
IIPYSSQYEEAYRCNFLGLSPPVPIPAHVLASEFVVVVEVHTATRSNLHPAGCEDDQSLS
KYEFVVTSGSPVAADRVGPTILNKIEAALTNQNLSVDVVDQCLICLKEEWMNKVKVLFKF
TKVDSRPKEDTQKLLSVLGASEEDNVKLLKFWMTGLSKTYKSHLM

This is a PDB domain - please see the PDBSUM entry of 3v42 for further annotation