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