4.2.1.80	(2E,4Z)-2-hydroxyhexa-2,4-dienoate + H2O	-	Pseudomonas putida	(4S)-4-hydroxy-2-oxohexanoate	-	?	444481	
4.2.1.80	(2E,4Z)-2-hydroxyhexa-2,4-dienoate + H2O	-	Leptothrix cholodnii	(4S)-4-hydroxy-2-oxohexanoate	-	?	444481	
4.2.1.80	(2E,4Z)-2-hydroxyhexa-2,4-dienoate + H2O	-	Leptothrix cholodnii SP-6	(4S)-4-hydroxy-2-oxohexanoate	-	?	444481	
4.2.1.80	(2E,4Z)-5-chloro-2-hydroxypenta-2,4-dienoate + H2O	-	Pseudomonas putida	(4R)-5-chloro-4-hydroxy-2-oxopentanoate	-	?	444482	
4.2.1.80	(2E,4Z)-5-chloro-2-hydroxypenta-2,4-dienoate + H2O	-	Leptothrix cholodnii	(4R)-5-chloro-4-hydroxy-2-oxopentanoate	-	?	444482	
4.2.1.80	(2E,4Z)-5-chloro-2-hydroxypenta-2,4-dienoate + H2O	-	Leptothrix cholodnii SP-6	(4R)-5-chloro-4-hydroxy-2-oxopentanoate	-	?	444482	
4.2.1.80	2-hydroxyhexa-2,4-dienoate + H2O	-	Paraburkholderia xenovorans	2-keto-4-hydroxyhexanoate	-	?	378915	
4.2.1.80	2-hydroxypent-2,4-dienoate + H2O	-	Paraburkholderia xenovorans	2-keto-4-hydroxypentanoate	-	?	378380	
4.2.1.80	2-hydroxypent-2,4-dienoate + H2O	reaction in the catabolic pathway of numerous aromatic compounds, including polychlorinated biphenyls	Paraburkholderia xenovorans	2-keto-4-hydroxypentanoate	-	?	378380	
4.2.1.80	2-hydroxypentadienoic acid	-	Escherichia coli	?	-	?	363307	
4.2.1.80	2-keto-cis-4-hexenoic acid	50% the rate of 4-hydroxy-2-oxopentanoate, higher activity towards cis than towards trans-isomer	Pseudomonas putida	?	-	?	363306	
4.2.1.80	2-keto-cis-4-hexenoic acid	50% the rate of 4-hydroxy-2-oxopentanoate, higher activity towards cis than towards trans-isomer	Pseudomonas putida mt-2 /  ATCC 33015 / DSM 3931 / NCIB 12182 / NCIMB 12182	?	-	?	363306	
4.2.1.80	4-hydroxy-2-oxopentanoate	-	Pseudomonas sp.	2-oxopent-4-enoate + H2O	-	?	363305	
4.2.1.80	4-hydroxy-2-oxopentanoate	-	Pseudomonas putida	2-oxopent-4-enoate + H2O	-	?	363305	
4.2.1.80	4-hydroxy-2-oxopentanoate	-	Novosphingobium aromaticivorans	2-oxopent-4-enoate + H2O	-	?	363305	
4.2.1.80	4-hydroxy-2-oxopentanoate	-	Pseudomonas putida mt-2 /  ATCC 33015 / DSM 3931 / NCIB 12182 / NCIMB 12182	2-oxopent-4-enoate + H2O	-	?	363305	
4.2.1.80	4-hydroxy-2-oxopentanoate	-	Novosphingobium aromaticivorans F199	2-oxopent-4-enoate + H2O	-	?	363305	
4.2.1.80	5-chloro-2-hydroxypent-2,4-dienoate	-	Paraburkholderia xenovorans	5-chloro-2-keto-4-hydroxypentanoate	-	?	379064