Structure and mechanism of benzoylformate decarboxylase, a thiamin dtthosphate-dependent enzyme

Qeorge L. Kenvon, Miriam S. Hasson, Angelica Muscate, Michael J. McLeish, Thomas K Harris, Patricia Ç Babbitt, John A. Gerlt, Gregory A. Petsko, Dagmar Rinye

Research output: Contribution to journalArticle

Abstract

Benzoylformate decarboxylase (BFD) is a thiamin diphosphate (TDP)-requiring enzyme found in the mandelate pathway in Pseydomonas putida. Its crystal structure has recently been solved at 1.6A resolution and refined to an R-factor of 15.0% (free R=18.5%). The overall architecture of BFD resembles that of other family members, especially in the cofactor binding site. Surprisingly, even though BFD catalyzes the same fundamental chemical reaction as pyruvate decarboxylase, there is no conservation of active site residues not directly bound to the cofactor. This suggests that cofactor chemistry, the nature of reaction intermediates and architectural considerations relating to the protein fold have been dominant forces in the evolution of TDP-dependent enzymes. Site-directed mutagenesis experiments have recently been initiated to try to elucidate the catalytic mechanism. (Supported by N1H Grants GM-40570 and GM 26788, DRG-1194 of the Cancer Research Fund of the Damon Runyon-Walter Winchell Foundation and the Lucille P. Markey Charitable Trust.).

Original languageEnglish
JournalFASEB Journal
Volume12
Issue number8
StatePublished - Dec 1 1998
Externally publishedYes

Fingerprint

benzoylformate decarboxylase
Thiamine
thiamin
Thiamine Pyrophosphate
pyruvate decarboxylase
R388
site-directed mutagenesis
Enzymes
chemical reactions
enzymes
crystal structure
Pyruvate Decarboxylase
active sites
binding sites
Reaction intermediates
Mutagenesis
chemistry
Organized Financing
Diagnosis-Related Groups
Site-Directed Mutagenesis

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Biochemistry
  • Cell Biology

Cite this

Kenvon, Q. L., Hasson, M. S., Muscate, A., McLeish, M. J., Harris, T. K., Babbitt, P. Ç., ... Rinye, D. (1998). Structure and mechanism of benzoylformate decarboxylase, a thiamin dtthosphate-dependent enzyme. FASEB Journal, 12(8).

Structure and mechanism of benzoylformate decarboxylase, a thiamin dtthosphate-dependent enzyme. / Kenvon, Qeorge L.; Hasson, Miriam S.; Muscate, Angelica; McLeish, Michael J.; Harris, Thomas K; Babbitt, Patricia Ç; Gerlt, John A.; Petsko, Gregory A.; Rinye, Dagmar.

In: FASEB Journal, Vol. 12, No. 8, 01.12.1998.

Research output: Contribution to journalArticle

Kenvon, QL, Hasson, MS, Muscate, A, McLeish, MJ, Harris, TK, Babbitt, PÇ, Gerlt, JA, Petsko, GA & Rinye, D 1998, 'Structure and mechanism of benzoylformate decarboxylase, a thiamin dtthosphate-dependent enzyme', FASEB Journal, vol. 12, no. 8.
Kenvon QL, Hasson MS, Muscate A, McLeish MJ, Harris TK, Babbitt PÇ et al. Structure and mechanism of benzoylformate decarboxylase, a thiamin dtthosphate-dependent enzyme. FASEB Journal. 1998 Dec 1;12(8).
Kenvon, Qeorge L. ; Hasson, Miriam S. ; Muscate, Angelica ; McLeish, Michael J. ; Harris, Thomas K ; Babbitt, Patricia Ç ; Gerlt, John A. ; Petsko, Gregory A. ; Rinye, Dagmar. / Structure and mechanism of benzoylformate decarboxylase, a thiamin dtthosphate-dependent enzyme. In: FASEB Journal. 1998 ; Vol. 12, No. 8.
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