The domain within your query sequence starts at position 1 and ends at position 198; the E-value for the 4dx8 domain shown below is 1e-125.

MGNPENIEDAYVAVIRPKNTASLNSREYRAKSYEILLHEVPIEGQKKKRKKVLLETKLQS
NSEIAQGILDYVVETTKPISPANQGIKGKRVVLMRKFPLDGEKTGREAALFIVPSVVKDN
TKYAYTPGCPIFYCLQDIMRVCSESSTHFATLTARMLIALDKWLDERHAQSHFIPALFRP
SPLERIKTNVINPAYAAE

This is a PDB domain - please see the PDBSUM entry of 4dx8 for further annotation