• Homogalacturonan pectins mainly inhibit TLR2-1. Pectins with a low DM or intermediate high DB inhibited TLR2-1 strongest. TLR2 bound strongest to an DB. inhibiting also IL-6 secretion from macrophages. have anti-inflammatory effects via Toll-like receptor (TLR) inhibition in degree of methyl-esterification-(DM)-dependent manner. However, vary distribution methyl-esters over the galacturonic-a...

We have recently isolated and heterologously expressed BcPeh28A, an endopolygalacturonase from the phytopathogenic Gram-negative bacterium Burkholderia cepacia. Endopolygalacturonases belong to glycoside hydrolase family 28 and are responsible for the hydrolysis of the non-esterified regions of pectins. The mode of action of BcPeh28A on different substrates has been investigated and its enzymat...

1 Laboratory of Structural Research Methods, Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 410015 Saratov, Russia 2 Laboratorio de Quimica Ambiental, Facultad Experimental de Ciencias, Universidad del Zulia, 4011 Maracaibo, Venezuela 3 Laboratoire des Mecanismes Reactionnels, Departement de Chimie, Ecole Polytechnique, CNRS LIRA 1307, F-9112...

Abstract Twelve carrot varieties in different colours and sizes were investigated for chemical properties (dry matter, ash, pectins, titratable acidity, pH), contents of vitamin C, sugar, organic acids, mineral (sodium, potassium, calcium, iron, magnesium), anti-oxidant activities (ABTS, FRAP, ORAC). Moreover, total polyphenolics tetraterpenoids colourful presented. According to the study, sucr...

BACKGROUND The plant cell walls play an important role in somatic embryogenesis and plant development. Pectins are major chemical components of primary cell walls while homogalacturonan (HG) is the most abundant pectin polysaccharide. Developmental regulation of HG methyl-esterification degree is important for cell adhesion, division and expansion, and in general for proper organ and plant deve...

Rice (Oryza sativa) is the most aluminum (Al)-resistant crop species among the small-grain cereals, but the mechanisms responsible for this trait are still unclear. Using two rice cultivars differing in Al resistance, rice sp. japonica 'Nipponbare' (an Al-resistant cultivar) and rice sp. indica 'Zhefu802' (an Al-sensitive cultivar), it was found that Al content in the root apex (0-10 mm) was si...