Arabinogalactan protein (AGP), a class of cell wall proteoglycan, was isolated from the hairy root cultures of a newly developed hairy root line IIT-BT/D1 of Catharanthus roseus (L.) G. Don. AGP was found to be present both in the roots (0.3 mg/g fresh weight) and in the spent media (47 mg/L). The compositional analysis revealed the predominance of arabinose and galactose sugar, a characteristi...

Article history: Received on: 16/05/2016 Revised on: 10/06/2016 Accepted on: 20/06/2016 Available online: 05/11/2016 In plants, pollen tube germination occurs widely in flowering plants. In Arabidopsis thaliana, it has been reported ARABINOGALACTAN PROTEIN 1 (AGP1) plays an important role in pollen tube germination. The expression of arabinogalactan protein in Arabidopsis pollen tubes has been ...

Emergence of multidrug-resistant and extreme-drug-resistant strains of Mycobacterium tuberculosis (MTb) can cause serious socioeconomic burdens. Arabinogalactan present on the cellular envelope of MTb is unique and is required for its survival; access to arabinogalactan is essential for understanding the biosynthetic machinery that assembles it. Isolation from Nature is a herculean task and, as...

Arabinogalactan proteins (AGP) are a class of cell surface plant peptidoglycans which have been implicated in root elongation and signal transduction pathways. AGPs function not only as markers of cellular identity but also as signaling molecules, which might initiate signal transduction. Aluminum promotes the elongation of tea (Camellia sinensis L.) roots. Although some mechanisms by which Al ...

The cell wall of Mycobacterium spp. consists predominately of arabinogalactan chains linked at the reducing ends to peptidoglycan via a P-GlcNAc-(alpha1-3)-Rha linkage unit (LU) and esterified to a variety of mycolic acids at the nonreducing ends. Several aspects of the biosynthesis of this complex have been defined, including the initial formation of the LU on a polyprenyl phosphate (Pol-P) mo...

Two different families of hydroxyproline-rich glycoproteins, HRGP(1) and HRGP(2), have been isolated from melon callus and separated by ion exchange chromatography on CM-sepharose. HRGP(1) corresponds to an arabinogalactan protein. The sugar portion of HRGP(1) accounts for 94% of the molecule and contains galactose (66%) and arabinose (34%); these residues are present as polysaccharide side cha...