The domain within your query sequence starts at position 1 and ends at position 258; the E-value for the 4jgh domain shown below is < 1e-12.

MEDSIVRKLMLDTWNESIFSNIKNRLQDSAMKLVHAERLGEAFDSQLVIGVRESYVNLCS
NPEDKLQIYRDNFEKAYLDSTERFYRTQAPSYLQQNGVQNYMKYADAKLKEEEKRALRYL
ETRRECNSVEALMECCVNALVTSFKETILAECQGMIKRNETEKLHLMFSLMDKVPNGIEP
MLKDLEEHIISAGLADMVAAAETITTDSEKYVEQLLTLFNRFSKLVKEAFQDDPRFLTAR
DKAYKAVVNDATIFKLEL

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