>4MCT_2|Chains B, D|Killer protein|Proteus vulgaris (585) MMIKSFKHKGLKLLFEKGVTSGVPAQDVDRINDRLQAIDTATEIGELNRQIYKLHPLKGDREGYWSITVRANWRITFQFINGDAYILNYEDYH >4MCT_1|Chains A, C|Antidote protein|Proteus vulgaris (585) MRQFKVSHPGEMIARDLEDMGVSGRRFAHNIGVTPATVSRLLAGKTALTPSLSIRIAAALGSTPEFWLRLQSNYDLRQLENQIDTSGIVLYGESNEQQQNAQEHDPNSSSVDKLAAALEHHHHHH