Analysis of secreted protease inhibitors after water stress in potato tubers

G Ledoigt; B Griffaut; E Debiton; C Vian; A Mustel; G Evray; J-C Maurizis; J-C Madelmont

doi:10.1016/j.ijbiomac.2006.03.016

Analysis of secreted protease inhibitors after water stress in potato tubers

Int J Biol Macromol. 2006 May 30;38(3-5):268-71. doi: 10.1016/j.ijbiomac.2006.03.016. Epub 2006 Mar 22.

Authors

G Ledoigt¹, B Griffaut, E Debiton, C Vian, A Mustel, G Evray, J-C Maurizis, J-C Madelmont

Affiliation

¹ EA3296 ERTAC, Physiologie et Génétique Végétales, Université Blaise-Pascal (Clermont-Ferrand II), campus universitaire des Cézeaux, 24 avenue des Landais, 63177 Aubière Cedex, France. Gerard.LEDOIGT@ertac.univ-bpclermont.fr

PMID: 16631926
DOI: 10.1016/j.ijbiomac.2006.03.016

Abstract

Potato tubers (Solanum tuberosum) secrete two kinds of proteinase inhibitors after a water stress. The polypeptides have differing inhibitory activities but are Kunitz-type inhibitors based on amino-terminal sequences homologies. A proteolysis maturation type of a cell protease inhibitor was observed. They can constitute high MW complex, sometimes with another type of protein. The function of these protease inhibitors is discussed in relation to plant defence.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Amino Acid Sequence
Buffers
Electrophoresis, Polyacrylamide Gel
Macromolecular Substances / chemistry
Molecular Sequence Data
Peptides / chemistry
Plant Tubers / chemistry
Protease Inhibitors / chemistry*
Protease Inhibitors / pharmacology*
Protein Structure, Tertiary
Proteins / chemistry
Solanum tuberosum / chemistry*
Water / chemistry*

Substances

Buffers
Macromolecular Substances
Peptides
Protease Inhibitors
Proteins
Water