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Published online before print March 31, 2005, 10.1110/ps.051415905
Protein Science (2005), 14:1350-1356. Published by Cold Spring Harbor Laboratory Press. Copyright © 2005 The Protein Society
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PROTEIN STRUCTURE REPORT

Crystal structure of yeast YHR049W/FSH1, a member of the serine hydrolase family

Sophie Quevillon-Cheruel1, Nicolas Leulliot1, Marc Graille1, Nadège Hervouet2, Frank Coste2, Hélène Bénédetti2, Charles Zelwer2, Joel Janin3 and Herman Van Tilbeurgh1

1 Institut de Biochimie et de Biophysique Moléculaire et Cellulaire (CNRS-UMR 8619), Université Paris-Sud, 91405 Orsay, France2 Centre de Biophysique Moléculaire (CNRS-UPR4301), 45071 Orleans Cedex 02, France3 Laboratoire d’Enzymologie et Biochimie Structurales (CNRS-UPR 9063), 91198 Gif sur Yvette, France

(RECEIVED February 15, 2005; FINAL REVISION February 15, 2005; ACCEPTED February 18, 2005)

Yhr049w/FSH1 was recently identified in a combined computational and experimental proteomics analysis for the detection of active serine hydrolases in yeast. This analysis suggested that FSH1 might be a serine-type hydrolase belonging to the broad functional {alpha}{beta}-hydrolase superfamily. In order to get insight into the molecular function of this gene, it was targeted in our yeast structural genomics project. The crystal structure of the protein confirms that it contains a Ser/His/Asp catalytic triad that is part of a minimal {alpha}/{beta}-hydrolase fold. The architecture of the putative active site and analogies with other protein structures suggest that FSH1 may be an esterase. This finding was further strengthened by the unexpected presence of a compound covalently bound to the catalytic serine in the active site. Apparently, the enzyme was trapped with a reactive compound during the purification process.

Keywords: esterase; lipase; Yhr049w/FSH1; serine hydrolase; OVCA2; Ymr222c/FSH2; Yor280c/FSH3

Article published online ahead of print. Article and publication date are at http://www.proteinscience.org/cgi/doi/10.1110/ps.051415905.

Reprint requests to: Herman van Tilbeurgh, Institut de Biochimie et de Biophysique Moléculaire et Cellulaire (CNRS-UMR 8619), Université Paris-Sud, Bâtiment 430, 91405 Orsay, France; e-mail: Herman.Van-Tilbeurgh{at}ibbmc.u-psud.fr; fax: +33-1-69-85-37-15.


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N. Leulliot, S. Quevillon-Cheruel, M. Graille, M. Schiltz, K. Blondeau, J. Janin, and H. Van Tilbeurgh
Crystal structure of yeast YER010Cp, a knotable member of the RraA protein family
Protein Sci., October 1, 2005; 14(10): 2751 - 2758.
[Abstract] [Full Text] [PDF]


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