The domain within your query sequence starts at position 340 and ends at position 458; the E-value for the 3i00 domain shown below is 1e-21.

TFGPPNGSMKDDRDLQIENLKREVETLRAELEKIKMEAQRYISQLKGQVNGLEAELEEQR
KQKQKALVDNEQLRHELAQLKALQLEGARNQGLREEAERKASATEARYSKLKEKHSELI

This is a PDB domain - please see the PDBSUM entry of 3i00 for further annotation