MGQTLAEKILSHKVGRPVRAGELVVVEVDQVMVVDSIAGSFFKRLEYLEATPRYPERVSIVIDHVAPAANLEVAKAQKEIREWGKRHGIRVFDVGRGVCHQVLIEEGLAQPGWVVVGSDSHSTTYGAVGAFGTGMGATDIALAAASGRTWLRVPESVKVVFRGRLPKGVTAKDAALEMVRLLTAEGATYMAVEIHLLDGAEALTRGERMTLANLTVEAGAKAGLVVPSGEILEMYRVPDWLYPDPDARYAKEVEIDLSALTPRVSVPFYVDNVHEVAQVKGKRVDQVFIGTCTNGRIEDLRAAAEVLRGRKVAPWVRLLVVPASSQVLEEAARDGTLLTLLEAGATIGTPGCGPCMGRHMGVLAPGEVCVSTSNRNFRGRMGAPDAEIYLASPRVAAASAVAGYLTTPEELEEEEVHA Homoaconitate hydratase HACA_THET2 lys4A Catalyzes the reversible hydration of cis-homoaconitate ((Z)-but-1-ene-1,2,4-tricarboxylate) to homoisocitrate ((1R,2S)-1- hydroxybutane-1,2,4-tricarboxylate). Can catalyze neither the dehydration of (R)-homocitrate ((2R)-2-hydroxybutane-1,2,4- tricarboxylate) into cis-homoaconitate in vitro, nor the reverse reaction. Is not active toward (S)-homocitrate, cis-aconitate or citrate as substrate. hacA Homoaconitase large subunit TT_C1547 lysT 418