Rhamnogalacturonan-I

Full Name

Rhamnogalacturonan-I

Keywords

Physcomitrella patens Pectic Polysaccharides; Gum Karaya; Potato RG-I; Soybean RG-I; RG-I from Okra; Arabidopsis thaliana RG-I; Green Tomato Fruit RG-I; Lettuce RG-I; Arabidopsis Seed Mucilage; Sinapus Seed Mucilage; Peppergrass Seed Mucilage; Camelina Seed Mucilage; Linseed Mucilage; RG-I

Background

Rhamnogalacturonans-I (RGs-I) are complex structural components of the (primary) cell wall. Their backbone, composed of the repeating diglycosyl [→2)-α-L-Rhap-(1→4)-α-D-GalpA-(1→], is believed to be branched at O-4/O-3 positions by 4 different side chain types, viz. (1→5)-α-L-arabinan, (1→4)-β-D-galactan, arabinogalactan-I, and sometimes with arabinogalactan-II.