bst:GYO_0545 K10009 L-cystine transport system permease protein | (GenBank) YckA bst:GYO_0546 K02424 L-cystine transport system substrate-binding protein | (GenBank) YckB bst:GYO_0549 no KO assigned | (GenBank) YckC protein bst:GYO_0550 no KO assigned | (GenBank) yckD; sporulation protein YckD bst:GYO_0551 no KO assigned | (GenBank) transcriptional regulator, MarR family