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Soluble Signals from Cells Identified at the Cell Wall Establish a Developmental Pathway in Carrot.
It is shown here that a conditioned growth medium from a culture of JIM8(+) cells allows state C cells in a JIM6(-) culture to go on and develop into somatic embryos, and a cell with a role in cell-cell communication and early cell fate selection can be identified by an epitope in its cell wall. Expand
Lipopolysaccharides and K-Antigens: Their Structures, Biosynthesis, and Functions
The bacterial surface is the first line of defense against antimicrobial molecules and stress caused by changes in the environment surrounding the bacterium. In the case of plant- and animal-microbeExpand
Structure of lipid A component of Rhizobium leguminosarum bv. phaseoli lipopolysaccharide. Unique nonphosphorylated lipid A containing 2-amino-2-deoxygluconate, galacturonate, and glucosamine.
The structure of lipid A from the lipopolysaccharide of Rhizobium leguminosarum bv. phaseoli (wild type strain CE3) was investigated by alkylation analysis, nuclear magnetic resonance spectroscopy,Expand
Oxidative Stress-induced Peptidoglycan Deacetylase in Helicobacter pylori*
H. pylori HP310 is representative of a new subfamily of bacterial PG deacetylases that appears to confer lysozyme resistance to escape immune detection and disrupts the parent strain's oxidative stress resistance characteristics. Expand
The Structures of the Lipopolysaccharides from Rhizobium etli Strains CE358 and CE359
The structural arrangement of oligosaccharides comprising the core region of Rhizobium etli CE3 lipopolysaccharide (LPS) has been elucidated through the characterization of the LPSs from two R. etli mutants, which differs substantially from the typical enterobacterial cores. Expand
Structural Characterization of the O-antigenic Polysaccharide of the Lipopolysaccharide from Rhizobium etli Strain CE3
The polysaccharide was found to be a unique, relatively low molecular weight glycan having a fairly discrete size, with surprisingly little variation in the number of repeating units (degree of polymerization = 5). Expand
nodZ, a unique host-specific nodulation gene, is involved in the fucosylation of the lipooligosaccharide nodulation signal of Bradyrhizobium japonicum.
The nodZ gene of Bradyrhizobium japonicum, whose product is required for the addition of a 2-O-methylfucose residue to the terminal reducing N-acetylglucosamine of the nodulation signal, represents a unique nodulation gene that is not under the control of NodD and yet is essential for the synthesis of an active nodulations signal. Expand
Exo-oligosaccharides of Rhizobium sp. strain NGR234 are required for symbiosis with various legumes.
NGR234 produces symbiotically active EOSs by enzymatic degradation of EPS, using the extracellular endo-beta-1,4-glycanase encoded by exoK (glycoside hydrolase family 16). Expand
Structural Characterization of a K-antigen Capsular Polysaccharide Essential for Normal Symbiotic Infection in Rhizobium sp. NGR234
K-antigen production was found to decline after rhizobia were exposed to plant flavonoids, and the decrease coincided with induction of a symbiotically active (bacteroid-specific) rhamnan-LPS, suggesting an exchange of SPS occurs during bacterial differentiation in the developing nodule. Expand
Optimization of Protein Extraction from Spirulina platensis to Generate a Potential Co-Product and a Biofuel Feedstock with Reduced Nitrogen Content
The current work reports protein extraction from Spirulina platensis cyanobacterial biomass in order to simultaneously generate a potential co-product and a biofuel feedstock with reduced nitrogenExpand