The domain within your query sequence starts at position 298 and ends at position 374; the E-value for the d3pmga3 domain shown below is 1e-8.

GDKIATLISSFLKELLLEIGESVNLGVVQTAYANGSSTRYLEEVMKVPVYCTKTGVKHLH
HKAQEFDIGVYFEANGH

This is a SCOP domain - please see the SCOP entry of d3pmga3 for further annotation