>3MKL_1|Chains A, B|HTH-type transcriptional regulator gadX|Escherichia coli (83333) SNALQPNMRTRVCTVINNNIAHEWTLARIASELLMSPSLLKKKLREEETSYSQLLTECRMQRALQLIVIHGFSIKRVAVSCGYHSVSYFIYVFRNYYGMTPTEYQERSAQRLSNRDSAAS