The domain within your query sequence starts at position 633 and ends at position 735; the E-value for the d1gkub2 domain shown below is 8e-4.

TKDKVVKKEIKTKLEEKKEEKPKKEVVKKEDKTPLKKDEKPRKEEVKKEIKKEIKKEERK
ELKKEVKKETPLKDAKKEVKKEEKKEVKKEEKEPKKEIKKISK

This is a SCOP domain - please see the SCOP entry of d1gkub2 for further annotation