5a2g

An esterase from anaerobic Clostridium hathewayi can hydrolyze aliphatic aromatic polyesters

spinqualitylabelsall models 5a2g, resolution 1.90Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5a2g is a 4 chain structure with sequence from Clostridium hathewayi dsm 13479. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: PO4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Recently, a variety of biodegradable polymers have been developed as alternatives to recalcitrant materials. Although many studies on polyester biodegradability have focused on aerobic environments, there is much less known on biodegradation of polyesters in natural and artificial anaerobic habitats. Consequently, the potential of anaerobic biogas sludge to hydrolyze the synthetic compostable polyester PBAT (poly(butylene adipate-co-butylene terephthalate) was evaluated in this study. On the basis of reverse-phase high-performance liquid chromatography (RP-HPLC) analysis, accumulation of terephthalic acid (Ta) was observed in all anaerobic batches within the first 14 days. Thereafter, a decline of Ta was observed, which occurred presumably due to consumption by the microbial population. The esterase Chath_Est1 from the anaerobic risk 1 strain Clostridium hathewayi DSM-13479 was found to hydrolyze PBAT. Detailed characterization of this esterase including elucidation of the crystal structure was performed. The crystal structure indicates that Chath_Est1 belongs to the alpha/beta-hydrolases family. This study gives a clear hint that also micro-organisms in anaerobic habitats can degrade manmade PBAT. An Esterase from Anaerobic Clostridium hathewayi Can Hydrolyze Aliphatic-Aromatic Polyesters.,Perz V, Hromic A, Baumschlager A, Steinkellner G, Pavkov-Keller T, Gruber K, Bleymaier K, Zitzenbacher S, Zankel A, Mayrhofer C, Sinkel C, Kueper U, Schlegel K, Ribitsch D, Guebitz GM Environ Sci Technol. 2016 Feb 29. PMID:26878094 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Carboxylesterase 3D structures

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