The domain within your query sequence starts at position 634 and ends at position 1218; the E-value for the d1b3ua_ domain shown below is 6e-9.

LRVIAEFGDFLGPQQVRDLLLAALEGLKGISETQGKDSGEMMQLASEVMLSSVLEWYRHR
ALEVIPEIMQGIYMQLTHIQEPRAREVALLPISFLASSFMTEVVVALLMCPLPLDSNGAE
MWRQLILRKPSCDVRDLLDLLLTSLKEKPVTKKGRASIVPLAAASGLCELLSVNSCVGRV
RRIYPQLLLALLIQVHYHIGLNLPSRMAPRKDSKDDTQPPLFIPVRWMVKVVKTLLLKMG
CSYESAFLEEQGGWELMGQAESHYRGVSLLARAMVHYSCQELCRILYLLIPLLERGDERH
KITATAFFVELFRMEQVRRIPEEYSLGRMVEGLSHRDPIMNVLSIRGLVILACKSEKMAK
VQSLLPSMVKSLKNMDGMLVVEAVHDLKRIFKGQGKKLTDSAVYVEMLQILLPHFTDARE
MVRASCINVYGKVVKKLQTPRTQAMEEQLTSTLMPLLFIIQEGNAKVSQKCVKTLVCCSS
FMNWELPKKAYSQKPWDNQQLTVTKICKYLVSSHRDNVFTFLNQSLEYAKNSRASLRKSS
VIFIGSLVPCMENMMTEERLNEVKATLEILRHDPEASVCICAAQA

This is a SCOP domain - please see the SCOP entry of d1b3ua_ for further annotation