trans-2,3-dihydro-3-hydroxy-anthranilate isomerase activity
Catalysis of the reaction: (2S,3S)-2,3-dihydro-3-hydroxyanthranilic acid = (1R,6S)-6-ammonio-5-oxocyclohex-2-ene-1-carboxylate.
GO:0016863
intramolecular oxidoreductase activity, transposing C=C bonds
is_a