6ghw

Substituting the prolines of 4-oxalocrotonate tautomerase with non-canonical analogue (2S)-3,4-dehydroproline

spinqualitylabelsall models 6ghw, resolution 2.30Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6ghw is a 3 chain structure with sequence from "bacillus_fluorescens_putidus"_flugge_1886 "bacillus fluorescens putidus" flugge 1886. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CA NonStd Res: 8LJ Gene: xylH ("Bacillus fluorescens putidus" Flugge 1886) Activity: 2-hydroxymuconate tautomerase, with EC number 5.3.2.6 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [4OT1_PSEPU] Catalyzes the ketonization of 2-hydroxymuconate stereoselectively to yield 2-oxo-3-hexenedioate. Publication Abstract from PubMed The enzyme 4-oxalocrotonate tautomerase shows remarkable catalytic versatility due to the secondary amine of its N-terminal proline moiety. In this work, we incorporated a range of proline analogues into the enzyme and examined the effects on structure and activity. While the structure of the enzyme remained unperturbed, its promiscuous Michael-type activity was severely affected. This finding demonstrates how atomic changes in a biocatalytic system can abolish its activity. Our work provides a toolbox for successful generation of enzyme variants with non-canonical catalytic proline analogues. Substituting the catalytic proline of 4-oxalocrotonate tautomerase with non-canonical analogues reveals a finely tuned catalytic system.,Lukesch MS, Pavkov-Keller T, Gruber K, Zangger K, Wiltschi B Sci Rep. 2019 Feb 25;9(1):2697. doi: 10.1038/s41598-019-39484-9. PMID:30804446 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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