The domain within your query sequence starts at position 21 and ends at position 138; the E-value for the 3jtc domain shown below is 2e-36.

SDGSQSLHMLQISYFQDNHHVRHQGNASLGKLLTHTLEGPSQNVTILQLQPWQDPESWER
TESGLQIYLTQFESLVKLVYRERKENVFFPLTVSCSLGCELPEEEEEGSEPHVFFDVA

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