Article (Scientific journals)
Relationship between propeptide pH unfolding and inhibitory ability during ProDer p 1 activation mechanism
Chevigné, Andy; Barumandzadeh, Roya; Groslambert, Sylvie et al.
2007In Journal of Molecular Biology, 374 (1), p. 170-185
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Keywords :
allergy; cysteine protease; inhibition mechanism; propeptide; pH unfolding
Abstract :
[en] The major allergen Der p1 of the house dust mite Dermatophagoides pteronyssinus is a papain-like cysteine protease (CA1) produced as an inactive precursor and associated with allergic diseases. The propeptide of Der p I exhibits a specific fold that makes it unique in the CA1 propeptide family. In this study, we investigated the activation steps involved in the maturation of the recombinant protease Der p 1 expressed in Pichia pastoris and the interaction of the full-length and truncated soluble propepticles with their parent enzyme in terms of activity inhibition and BIAcore interaction analysis. According to our results, the activation of protease Der p 1 is a multistep mechanism that is characterized by at least two intermediates. The propeptide strongly inhibits unglycosylated and glycosylated recombinant Der p 1 (K-D = 7 nM) at neutral pH. This inhibition is pH dependent. It decreases from pH 7 to pH 4 and can be related to conformational changes of the propepticle characterized by an increase of its flexibility and formation of a molten globule state. Our results indicate that activation of the zymogen at pH 4 is a compromise between activity preservation and propeptide unfolding. (c) 2007 Elsevier Ltd. All rights reserved.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Chevigné, Andy ;  Université de Liège - ULiège > Macromolécules biologiques
Barumandzadeh, Roya ;  Université de Liège - ULiège > Département des sciences de la vie > Laboratoire d'Enzymologie et Repliement des Protéines, Centre d'Ingénierie des Protéines
Groslambert, Sylvie  ;  Université de Liège - ULiège > Department of Chemical Engineering > PEPs (Product, Environment, Processes)
Cloes, Benoït
Dehareng, Dominique ;  Université de Liège - ULiège > Centre d'ingénierie des protéines
Filée, Patrice ;  Université de Liège - ULiège > Centre d'ingénierie des protéines
Marx, Jean-Claude
Frère, Jean-Marie ;  Université de Liège - ULiège > Département des sciences de la vie > Département des sciences de la vie
Matagne, André  ;  Université de Liège - ULiège > Département des sciences de la vie > Laboratoire d'Enzymologie et Repliement des Protéines, Centre d'Ingénierie des Protéines
Jacquet, Aurélie ;  Université de Liège - ULiège > Département des sciences cliniques > Gynécologie - Obstétrique
Galleni, Moreno ;  Université de Liège - ULiège > Département des sciences de la vie > Macromolécules biologiques
Language :
English
Title :
Relationship between propeptide pH unfolding and inhibitory ability during ProDer p 1 activation mechanism
Publication date :
16 November 2007
Journal title :
Journal of Molecular Biology
ISSN :
0022-2836
eISSN :
1089-8638
Publisher :
Academic Press Ltd Elsevier Science Ltd, London, United Kingdom
Volume :
374
Issue :
1
Pages :
170-185
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
FRFC - Fonds de la Recherche Fondamentale Collective [BE]
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
DGTRE - Région wallonne. Direction générale des Technologies, de la Recherche et de l'Énergie [BE]
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