A Fungal Endoglucanase with Plant Cell Wall Extension Activity
نویسندگان
چکیده
منابع مشابه
Pectin methylesterase, metal ions and plant cell-wall extension. The role of metal ions in plant cell-wall extension.
The study of pectin methylesterase and wall-loosening enzyme activities in situ, as well as the estimation of the electrostatic potential of the cell wall, suggest a coherent picture of the role played by metal ions and pH in cell-wall extension. Cell-wall growth brings about a decrease of local proton concentration because the electrostatic potential difference (delta psi) of the wall decrease...
متن کاملPectin methylesterase, metal ions and plant cell-wall extension. Hydrolysis of pectin by plant cell-wall pectin methylesterase.
The hydrolysis of p-nitrophenyl acetate catalysed by pectin methylesterase is competitively inhibited by pectin and does not require metal ions to occur. The results suggest that the activastion by metal ions may be explained by assuming that they interact with the substrate rather than with the enzyme. With pectin used as substrate, metal ions are required in order to allow the hydrolysis to o...
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Transgenic technology has demonstrated its usefulness in weed and insect control, but this technology has yet to expand much beyond these limited, special case scenarios. Along with stringent regulations, the primary limitation preventing expansion into new areas is finding efficacious genes. Fungal pathogens are particularly difficult to control in this regard as these organisms employ many of...
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BACKGROUND AND AIMS Plant cells undergo cell expansion when a temporary imbalance between the hydraulic pressure of the vacuole and the extensibility of the cell wall makes the cell volume increase dramatically. The primary cell walls of most seed plants consist of cellulose microfibrils tethered mainly by xyloglucans and embedded in a highly hydrated pectin matrix. During cell expansion the wa...
متن کاملDisruption of hydrogen bonding between plant cell wall polymers by proteins that induce wall extension.
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. Her...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 2001
ISSN: 1532-2548,0032-0889
DOI: 10.1104/pp.127.1.324