Arabinogalactan proteins

Full Name

Arabinogalactan proteins

Keywords

Arabinogalactan; Arabinogalactan protein; Arinbinogalactans; Arabinogalactan proteins

Background

Arabinogalactan-proteins (AGP) are members of the hydroxyproline (Hyp)-rich cell wall glycoprotein superfamily and are extensively glycosylated. AGPs contains a protein backbone of varied length (5-30 kDa) with N-terminal secretory peptide followed by AGP, fasciclin (FAS) domains, and a C-terminal glycosylphosphatidylinositol (GPI) lipid anchor site. There are 85 predicted AGPs in Arabidopsis, with most of them containing a GPI plasma membrane anchor sequence that ties the extracellular AGPs to the plasma membrane and positions them to function as potential signaling molecules.