The domain within your query sequence starts at position 3 and ends at position 171; the E-value for the 4exv domain shown below is 1e-9.
LLPCNPHGNGLLYAGFNQDHGCFACGMENGFRVYNTDPLKEKEKQVMIWDDLKKKTVIEI EFSTEVKAVKLRRDRIVVVLDSMIKVFTFTHNPHQLHVFETCYNPKGLCVLCPNSNNSLL AFPGTHTGHVQLVDLASTEKPPVDIPAHEGVLSCIALNLQGTRIATASE