Taxonomic implications of Prototheca and Chlorella cell wall polysaccharide characterization

1973 ◽  
Vol 92 (3) ◽  
pp. 227-233 ◽  
Author(s):  
Mario V. Conte ◽  
R. Scott Pore
Keyword(s):  
Cell Wall ◽  
Cell Wall Polysaccharide ◽  
Chlorella Cell ◽  
Taxonomic Implications

scholarly journals Crystal structure to 2.45 Å resolution of a monoclonal Fab specific for theBrucellaA cell wall polysaccharide antigen

1993 ◽  
Vol 2 (7) ◽  
pp. 1106-1113 ◽  
Author(s):  
D. R. Rose ◽  
M. Przybylska ◽  
R. J. To ◽  
C. S. Kayden ◽  
E. Vorberg ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Cell Wall ◽  
Cell Wall Polysaccharide ◽  
Polysaccharide Antigen

scholarly journals PUL-Mediated Plant Cell Wall Polysaccharide Utilization in the Gut Bacteroidetes

2021 ◽  
Vol 22 (6) ◽  
pp. 3077
Author(s):  
Zhenzhen Hao ◽  
Xiaolu Wang ◽  
Haomeng Yang ◽  
Tao Tu ◽  
Jie Zhang ◽  
...  
Keyword(s):  
Cell Wall ◽  
Microbial Community ◽  
Gut Microbiota ◽  
Plant Cell ◽  
Plant Cell Wall ◽  
Cell Wall Polysaccharide ◽  
Prominent Feature ◽  
Cell Wall Polysaccharides ◽  
Gut Microbial Community

Plant cell wall polysaccharides (PCWP) are abundantly present in the food of humans and feed of livestock. Mammalians by themselves cannot degrade PCWP but rather depend on microbes resident in the gut intestine for deconstruction. The dominant Bacteroidetes in the gut microbial community are such bacteria with PCWP-degrading ability. The polysaccharide utilization systems (PUL) responsible for PCWP degradation and utilization are a prominent feature of Bacteroidetes. In recent years, there have been tremendous efforts in elucidating how PULs assist Bacteroidetes to assimilate carbon and acquire energy from PCWP. Here, we will review the PUL-mediated plant cell wall polysaccharides utilization in the gut Bacteroidetes focusing on cellulose, xylan, mannan, and pectin utilization and discuss how the mechanisms can be exploited to modulate the gut microbiota.

scholarly journals UDP-glucose dehydrogenases of maize: a role in cell wall pentose biosynthesis

2005 ◽  
Vol 391 (2) ◽  
pp. 409-415 ◽  
Author(s):  
Anna Kärkönen ◽  
Alain Murigneux ◽  
Jean-Pierre Martinant ◽  
Elodie Pepey ◽  
Christophe Tatout ◽  
...  
Keyword(s):  
Cell Wall ◽  
Sequence Similarity ◽  
Glucose Dehydrogenase ◽  
Soya Bean ◽  
Amino Acid Sequences ◽  
Cell Wall Polysaccharide ◽  
Polysaccharide Biosynthesis ◽  
Polysaccharide Synthesis ◽  
Ethanol Dehydrogenase ◽  
Adh Activity

UDPGDH (UDP-D-glucose dehydrogenase) oxidizes UDP-Glc (UDP-D-glucose) to UDP-GlcA (UDP-D-glucuronate), the precursor of UDP-D-xylose and UDP-L-arabinose, major cell wall polysaccharide precursors. Maize (Zea mays L.) has at least two putative UDPGDH genes (A and B), according to sequence similarity to a soya bean UDPGDH gene. The predicted maize amino acid sequences have 95% similarity to that of soya bean. Maize mutants with a Mu-element insertion in UDPGDH-A or UDPGDH-B were isolated (udpgdh-A1 and udpgdh-B1 respectively) and studied for changes in wall polysaccharide biosynthesis. The udpgdh-A1 and udpgdh-B1 homozygotes showed no visible phenotype but exhibited 90 and 60–70% less UDPGDH activity respectively than wild-types in a radiochemical assay with 30 μM UDP-glucose. Ethanol dehydrogenase (ADH) activity varied independently of UDPGDH activity, supporting the hypothesis that ADH and UDPGDH activities are due to different enzymes in maize. When extracts from wild-types and udpgdh-A1 homozygotes were assayed with increasing concentrations of UDP-Glc, at least two isoforms of UDPGDH were detected, having Km values of approx. 380 and 950 μM for UDP-Glc. Leaf and stem non-cellulosic polysaccharides had lower Ara/Gal and Xyl/Gal ratios in udpgdh-A1 homozygotes than in wild-types, whereas udpgdh-B1 homozygotes exhibited more variability among individual plants, suggesting that UDPGDH-A activity has a more important role than UDPGDH-B in UDP-GlcA synthesis. The fact that mutation of a UDPGDH gene interferes with polysaccharide synthesis suggests a greater importance for the sugar nucleotide oxidation pathway than for the myo-inositol pathway in UDP-GlcA biosynthesis during post-germinative growth of maize.

scholarly journals Effect of maize internode lignification on in vitro cell-wall polysaccharide degradability

1995 ◽  
Vol 44 (Suppl. 1) ◽  
pp. 34-34
Author(s):  
HG Jung ◽  
TA Morrison ◽  
DR Buxton
Keyword(s):  
Cell Wall ◽  
Cell Wall Polysaccharide

Brefeldin A: a specific inhibitor of cell wall polysaccharide biosynthesis in oat coleoptile segments

1999 ◽  
Vol 37 (1) ◽  
pp. 33-40 ◽  
Author(s):  
Gabriella Piro ◽  
Anna Montefusco ◽  
Daniela Pacoda ◽  
Giuseppe Dalessandro
Keyword(s):  
Cell Wall ◽  
Specific Inhibitor ◽  
Brefeldin A ◽  
Cell Wall Polysaccharide ◽  
Polysaccharide Biosynthesis

An acidic water-soluble cell wall polysaccharide: a chemotaxonomic marker for Fusarium and Gibberella

2000 ◽  
Vol 104 (5) ◽  
pp. 603-610 ◽  
Author(s):  
O. Ahrazem ◽  
B. Gómez-Miranda ◽  
A. Prieto ◽  
I. Barasoaín ◽  
M. Bernabé ◽  
...  
Keyword(s):  
Cell Wall ◽  
Water Soluble ◽  
Cell Wall Polysaccharide ◽  
Acidic Water ◽  
Soluble Cell ◽  
Chemotaxonomic Marker
Sign in / Sign up

Export Citation Format

Share Document