The domain within your query sequence starts at position 3 and ends at position 168; the E-value for the 3r6n domain shown below is 5e-37.

LSVKAICDYRQIEITICKNDECVLEDNSQRTKWKVISPTGNEAMVPSVCFLIPPPNKEAI
EMASRVEQSYQKVMALWHQLHINTKSLISWNYLRKDLDTVQTWSLEKLRSLAPGECHQVM
KNLQAHYEDFLQDSHDSALFSVADRLRIEEEVEACKAHFQHLMKSL

This is a PDB domain - please see the PDBSUM entry of 3r6n for further annotation