PMID: 11607483Jul 5, 1994Paper

Disruption of hydrogen bonding between plant cell wall polymers by proteins that induce wall extension

Proceedings of the National Academy of Sciences of the United States of America
Simon McQueen-Mason, D J Cosgrove

Abstract

Plant cell enlargement is controlled by the ability of the constraining cell wall to expand. This ability has been postulated to be under the control of polysaccharide hydrolases or transferases that weaken or rearrange the loadbearing polymeric networks in the wall. We recently identified a family of wall proteins, called expansins, that catalyze the extension of isolated plant cell walls. Here we report that these proteins mechanically weaken pure cellulose paper in extension assays and stress relaxation assays, without detectable cellulase activity (exo- or endo- type). Because paper derives its mechanical strength from hydrogen bonding between cellulose microfibrils, we conclude that expansins can disrupt hydrogen bonding between cellulose fibers. This conclusion is further supported by experiments in which expansin-mediated wall extension (i) was increased by 2 M urea (which should weaken hydrogen bonding between wall polymers) and (ii) was decreased by replacement of water with deuterated water, which has a stronger hydrogen bond. The temperature sensitivity of expansin-mediated wall extension suggests that units of 3 or 4 hydrogen bonds are broken by the action of expansins. In the growing cell wall, expansin action is l...Continue Reading

References

Jan 1, 1981·Scientific American·T Tanaka
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Aug 1, 1992·Plant Physiology·D L Rayle, R E Cleland
Nov 1, 1992·The Plant Cell·S McQueen-MasonD J Cosgrove
Mar 15, 1991·Proceedings of the National Academy of Sciences of the United States of America·L S LinJ E Varner

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Citations

Jul 1, 1996·BioEssays : News and Reviews in Molecular, Cellular and Developmental Biology·D J Cosgrove
Oct 12, 2012·Applied Microbiology and Biotechnology·In Jung KimKyoung Heon Kim
Mar 21, 2013·Applied Microbiology and Biotechnology·Ivan BaccelliLuigia Pazzagli
Aug 30, 2008·Protoplasma·Qiang GaoWei Wang
May 7, 2010·Applied Biochemistry and Biotechnology·Meihua WangZhinan Xu
Apr 1, 2009·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Anurag PayasiRandhir Singh
Nov 13, 2003·Current Opinion in Plant Biology·Yi LiSimon McQueen-Mason
Sep 7, 2001·Phytochemistry·K M FenwickM C Jarvis
Jul 10, 1998·Biochimica Et Biophysica Acta·S J Orford, J N Timmis
Sep 7, 2001·Plant Physiology and Biochemistry : PPB·D J Cosgrove
Feb 19, 2000·Current Opinion in Plant Biology·D J Cosgrove
Nov 2, 2005·Nature Reviews. Molecular Cell Biology·Daniel J Cosgrove
Aug 6, 2000·The Plant Journal : for Cell and Molecular Biology·M M KaterG C Angenent
May 22, 2001·The Plant Journal : for Cell and Molecular Biology·J E Thompson, S C Fry
Mar 7, 2012·Proceedings of the National Academy of Sciences of the United States of America·Ameya PhadkeShyni Varghese
Sep 18, 2012·Proceedings of the National Academy of Sciences of the United States of America·Daisuke TodakaKazuko Yamaguchi-Shinozaki
Aug 2, 1994·Proceedings of the National Academy of Sciences of the United States of America·L Taiz
Apr 13, 1999·Critical Reviews in Food Science and Nutrition·M D BrownleaderP M Dey
Jan 19, 2010·Journal of Experimental Botany·X Carolina LizanaDaniel F Calderini
Jun 16, 2004·Molecular Plant-microbe Interactions : MPMI·Walter Giordano, Ann M Hirsch
Jan 14, 2011·Journal of the Royal Society, Interface·Mariusz Pietruszka
Jun 1, 1996·Annual Review of Plant Physiology and Plant Molecular Biology·Nicholas C. Carpita
Sep 7, 2001·Annual Review of Plant Physiology and Plant Molecular Biology·D J Cosgrove
May 4, 2006·Annual Review of Plant Biology·Harsh P BaisJorge M Vivanco
Jan 1, 1997·Annual Review of Cell and Developmental Biology·D J Cosgrove
Mar 24, 2009·BMC Genomics·Flávia S Papini-TerziGlaucia M Souza
Feb 15, 2011·Microbial Cell Factories·Rosa E Quiroz-CastañedaJorge L Folch-Mallol

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