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Title: Algerian pearl millet ( Pennisetum glaucum L.) contains XIP but not TAXI and TLXI type xylanase inhibitors
Authors: Mokrane, Hind ×
Gebruers, Kurt
Beaugrand, Johnny
Proost, Paul
Nadjemi, Boubekeur
Belhanèche-Bensemra, Naima
Courtin, Christophe
Delcour, Jan #
Issue Date: Jun-2009
Publisher: American Chemical Society, Books and Journals Division
Series Title: Journal of Agricultural and Food Chemistry vol:57 issue:12 pages:5542-5548
Abstract: An XIP (xylanase inhibiting protein) type xylanase inhibitor was purified from Algerian pearl millet ( Pennisetum glaucum L.) grains and characterized for the first time. Cation exchange and affinity chromatography with immobilized Trichoderma longibrachiatum glycoside hydrolase (GH) family 11 xylanase resulted in electrophoretically pure protein with a molecular mass of 27-29 kDa and a pI value of 6.7. The experimentally determined N-terminal amino acid sequence of the purified XIP protein is 87.5%, identical to that of sorghum ( Sorghum bicolor L.) XIP and 79.2% identical to that of wheat ( Triticum aestivum L.) XIP-I. The biochemical properties of pearl millet XIP are comparable to those described earlier for sorghum XIP, except for the higher specific activity toward a T. longibrachiatum GH family 11 xylanase. On the basis of immunoblot neither TAXI nor TLXI type xylanase inhibitors were detected in pearl millet grains.
URI: 
ISSN: 0021-8561
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Laboratory of Molecular Immunology (Rega Institute)
Centre for Food and Microbial Technology
× corresponding author
# (joint) last author

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