>1CMA_1|Chain A[auth C]|DNA (5'-D(*TP*TP*AP*GP*AP*CP*GP*TP*CP*T)-3')| TTAGACGTCT >1CMA_2|Chain B[auth D]|DNA (5'-D(*AP*GP*AP*CP*GP*TP*CP*TP*A)-3')| AGACGTCTA >1CMA_3|Chains C[auth A], D[auth B]|PROTEIN (MET REPRESSOR)|Escherichia coli (562) AEWSGEYISPYAEHGKKSEQVKKITVSIPLKVLKILTDERTRRQVNNLRHATNSELLCEAFLHAFTGQPLPDDADLRKERSDEIPEAAKEIMREMGINPETWEY