The domain within your query sequence starts at position 46 and ends at position 491; the E-value for the d1qbkb_ domain shown below is 4e-6.

KEKQKKLVEQLTGLISSSPGPPTRKLLAKNLAALYSIGDTYTVFQTLDKCNDIIRSKDDT
AAYLPTKLAAVACVGAFYEKMGRMLGSAFPETVNNLLKSLKSAESQGRSEILMSLQKVLT
GLGGAAASSHRDIYKNARSLLTDRSMAVRCAVAKCLLELQNEAVFMWTAELENVATLCFK
ALENSNYGVRVAVSKLLGTVMATALMPKQATVMRQNVKRATFDEVLELMATGFLRGGSGF
LKSGGEMLKVGGSVNREVRVGVTQAYVVFVTTLGGQWLERSFATFLSHVLDLVSHPRATQ
THVDAVYSRRCVSFMLRATVGSLLGEKAQIAAAKEICQAIGKQMKAVEAVVNDTSSENKS
GTADIAASQHVMVCALQELGSLVQSLNATASPLIQEASIGLLEIVTSVLLHPSMAARLAA
AWCLRCVAVALPFQLTPFLDRCAERL

This is a SCOP domain - please see the SCOP entry of d1qbkb_ for further annotation