The domain within your query sequence starts at position 495 and ends at position 602; the E-value for the 3zns domain shown below is 2e-60.

QTQVLNSSETPATGLVYDSVMLKHQCSCGDNSKHPEHAGRIQSIWSRLQERGLRSQCECL
RGRKASLEELQSVHSERHVLLYGTNPLSRLKLDNGKLTGLLAQRTFVM

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