Immunogen sequence: NDDNNNAGSG QQSVSVNNEH NVANVDNNNG WDSWNSIWDY GNGFAATRLF QKKTCIVHKM NKEVMPSIQ. Gastrokine 1, also known as GKN1 and CA11, is a 185 amino acid containing secreted protein belonging to the gastrokine family with a BRICHOS domain and an as