7A19

2,3-Dihydroxybenzoate Decarboxylase of Aspergillus oryzae

Summary for 7A19

• Entry DOI: 10.2210/pdb7a19/pdb
• Descriptor: Amidohydrolase 2, MAGNESIUM ION (3 entities in total)
• Functional Keywords: metal binding protein
• Biological source: Aspergillus oryzae (Yellow koji mold)
• Total number of polymer chains: 2
• Total formula weight: 82227.36

Authors

Hofer, G.,Keller, W. (deposition date: 2020-08-12, release date: 2020-10-21, Last modification date: 2024-01-31)

Primary citation

Hofer, G.,Sheng, X.,Braeuer, S.,Payer, S.E.,Plasch, K.,Goessler, W.,Faber, K.,Keller, W.,Himo, F.,Glueck, S.M.
Metal Ion Promiscuity and Structure of 2,3-Dihydroxybenzoic Acid Decarboxylase of Aspergillus oryzae.
Chembiochem, 22:652-656, 2021

PubMed Abstract: Broad substrate tolerance and excellent regioselectivity, as well as independence from sensitive cofactors have established benzoic acid decarboxylases from microbial sources as efficient biocatalysts. Robustness under process conditions makes them particularly attractive for preparative-scale applications. The divalent metal-dependent enzymes are capable of catalyzing the reversible non-oxidative (de)carboxylation of a variety of electron-rich (hetero)aromatic substrates analogously to the chemical Kolbe-Schmitt reaction. Elemental mass spectrometry supported by crystal structure elucidation and quantum chemical calculations verified the presence of a catalytically relevant Mg complexed in the active site of 2,3-dihydroxybenoic acid decarboxylase from Aspergillus oryzae (2,3-DHBD_Ao). This unique example with respect to the nature of the metal is in contrast to mechanistically related decarboxylases, which generally have Zn or Mn as the catalytically active metal.

PubMed: 33090643
DOI: 10.1002/cbic.202000600

Experimental method

X-RAY DIFFRACTION (1.21 Å)