scholarly journals Borate-Rhamnogalacturonan II Bonding Reinforced by Ca2+ Retains Pectic Polysaccharides in Higher-Plant Cell Walls

1999 ◽  
Vol 119 (1) ◽  
pp. 199-204 ◽  
Author(s):  
Masaru Kobayashi ◽  
Hironobu Nakagawa ◽  
Tomoyuki Asaka ◽  
Toru Matoh
Keyword(s):  
Plant Cell ◽  
Cell Walls ◽  
Plant Cell Walls ◽  
Higher Plant ◽  
Pectic Polysaccharides ◽  
Rhamnogalacturonan Ii

An extrinsic marker for higher plant cell walls

PROTOPLASMA ◽  
1988 ◽  
Vol 143 (2-3) ◽  
pp. 165-169 ◽  
Author(s):  
G. Nagahashi ◽  
Linda Garzarella
Keyword(s):  
Plant Cell ◽  
Cell Walls ◽  
Plant Cell Walls ◽  
Higher Plant

scholarly journals Molecular cohesion in plant cell walls. Methylation analysis of pectic polysaccharides from the cotyledons of white mustard

1969 ◽  
Vol 115 (3) ◽  
pp. 431-439 ◽  
Author(s):  
D. A. Rees ◽  
N. J. Wight
Keyword(s):  
Plant Cell ◽  
Cell Walls ◽  
Uronic Acid ◽  
Structural Elements ◽  
Plant Cell Walls ◽  
White Mustard ◽  
Methylation Analysis ◽  
Structural Units ◽  
Pectic Polysaccharides ◽  
Derivatives Of

Methylation analysis was used to characterize the pectic polysaccharides from mustard cotyledons, a tissue with potential for rapid biological change involving the walls. The methylated sugars were identified by g.l.c. and paper chromatography after conversion of uronic acid derivatives into [3H]hexoses, and confirmed by the formation of crystalline derivatives of most of the main products, which were: 2,3-di-O-methyl-d-[6−3H]galactose, 2-O-methyl-d-[6−3H]galactose, 3,4-di-O-methylrhamnose, 3-O-methylrhamnose, 2,3,5-tri-O-methyl-l-arabinose, 2,3-di-O-methyl-l-arabinose, 2-O-methyl-l-arabinose, 2,3,4-tri-O-methyl-d-xylose and 2,3,4,6-tetra-O-methyl-d-galactose in the molar proportions 1·00:1·14:0·54:0·74:2·86:2·50:2·24:1·88:0·32. The structural units present are similar to those in wellknown polysaccharides from mature tissues, but their proportions are strikingly different. Uninterrupted and unbranched galacturonan segments can therefore contribute little cohesion to these walls, and it is suggested that this correlates with a function of the wall matrix to hydrate and permit readjustment, during germination, of structural elements or wall surfaces or both.

scholarly journals Laser Microsurgery of Higher Plant Cell Walls Permits Patch-Clamp Access

1996 ◽  
Vol 110 (4) ◽  
pp. 1063-1068 ◽  
Author(s):  
G. H. Henriksen ◽  
A. R. Taylor ◽  
C. Brownlee ◽  
S. M. Assmann
Keyword(s):  
Patch Clamp ◽  
Plant Cell ◽  
Cell Walls ◽  
Plant Cell Walls ◽  
Laser Microsurgery ◽  
Higher Plant

scholarly journals 11B Solid-state NMR Investigation of the Rhamnogalacturonan II-borate Complex in Plant Cell Walls

2006 ◽  
Vol 22 (2) ◽  
pp. 321-323 ◽  
Author(s):  
Tsunenori KAMEDA ◽  
Tadashi ISHII ◽  
Toshiro MATSUNAGA ◽  
Jun ASHIDA
Keyword(s):  
Solid State ◽  
Plant Cell ◽  
Solid State Nmr ◽  
Cell Walls ◽  
Plant Cell Walls ◽  
Borate Complex ◽  
Rhamnogalacturonan Ii

scholarly journals Determination of Subunit Composition of Clostridium cellulovorans Cellulosomes That Degrade Plant Cell Walls

2002 ◽  
Vol 68 (4) ◽  
pp. 1610-1615 ◽  
Author(s):  
Koichiro Murashima ◽  
Akihiko Kosugi ◽  
Roy H. Doi
Keyword(s):  
Cell Wall ◽  
Plant Cell ◽  
Cell Walls ◽  
Plant Cell Wall ◽  
Scaffolding Protein ◽  
Plant Cell Walls ◽  
Higher Plant ◽  
Clostridium Cellulovorans ◽  
Plant Cell Wall Degradation

ABSTRACT Clostridium cellulovorans produces a cellulase enzyme complex (cellulosome). In this study, we isolated two plant cell wall-degrading cellulosomal fractions from culture supernatant of C. cellulovorans and determined their subunit compositions and enzymatic activities. One of the cellulosomal fractions showed fourfold-higher plant cell wall-degrading activity than the other. Both cellulosomal fractions contained the same nine subunits (the scaffolding protein CbpA, endoglucanases EngE and EngK, cellobiohydrolase ExgS, xylanase XynA, mannanase ManA, and three unknown proteins), although the relative amounts of the subunits differed. Since only cellobiose was released from plant cell walls by the cellulosomal fractions, cellobiohydrolases were considered to be key enzymes for plant cell wall degradation.

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