The domain within your query sequence starts at position 1 and ends at position 191; the E-value for the 3cou domain shown below is 4e-80.
MATPTKIDLEDALALGPSWRHLCHVMLYAPDPGVLFGGRILLNYAVLMSMRFDGRLGFPG GFVDDRSPSLEEGLNKELLKKLGEGVSTFSILSTDYRSSLAESKSKVVAHFYVKCLTLEQ LQAVEAGAPQAKDHGLEVLGLVRVPLYTLRDGVGGLPAFLENSFIGVAREQLLEALQDLG ILAPETASDLK