6dxq

Structural highlights

Function

LIGJ_SPHSK Contributes to the degradation of lignin at the level of the protocatechuate 4,5-cleavage pathway. Catalyzes the hydration of the double bond of (3Z)-2-keto-4-carboxy-3-hexenedioate (KCH) to (4S)-4-carboxy-4-hydroxy-2-oxoadipate (CHA, also named (2S)-2-hydroxy-4-oxobutane-1,2,4-tricarboxylate) (PubMed:29658701, PubMed:30207699). Is involved in the catabolism of both vanillate and syringate (PubMed:11092855).^{[1] [2] [3]}

References

1. ↑ Hara H, Masai E, Katayama Y, Fukuda M. The 4-oxalomesaconate hydratase gene, involved in the protocatechuate 4,5-cleavage pathway, is essential to vanillate and syringate degradation in Sphingomonas paucimobilis SYK-6. J Bacteriol. 2000 Dec;182(24):6950-7. PMID:11092855 doi:10.1128/JB.182.24.6950-6957.2000
2. ↑ Hogancamp TN, Raushel FM. Functional Annotation of LigU as a 1,3-Allylic Isomerase during the Degradation of Lignin in the Protocatechuate 4,5-Cleavage Pathway from the Soil Bacterium Sphingobium sp. SYK-6. Biochemistry. 2018 May 15;57(19):2837-2845. doi: 10.1021/acs.biochem.8b00295., Epub 2018 Apr 27. PMID:29658701 doi:http://dx.doi.org/10.1021/acs.biochem.8b00295
3. ↑ Hogancamp TN, Mabanglo MF, Raushel FM. Structure and Reaction Mechanism of the LigJ Hydratase: An Enzyme Critical for the Bacterial Degradation of Lignin in the Protocatechuate 4,5-Cleavage Pathway. Biochemistry. 2018 Sep 12. doi: 10.1021/acs.biochem.8b00713. PMID:30207699 doi:http://dx.doi.org/10.1021/acs.biochem.8b00713