Immunogen sequence: EGKQQYLQSI EEREKLDGLY ECILCACCST SCPSYWWNGD KYLGPAVLMQ AYRWMIDSRD DFTEERLAKL QDPFSLYRCH TIMNCTRTCP KGLNPGKAIA EIKKMMATY. Complex II of the respiratory chain, which is specifically involved in the oxidation of succinate, carries electr