ArticleThe Journal of biological chemistry2010
Plant O-hydroxyproline arabinogalactans are composed of repeating trigalactosyl subunits with short bifurcated side chains.
Article in The Journal of biological chemistry, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers.
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Who cites it
53 citing papers in PubMed, 116 citations in OpenAlex.
- Transcriptomic landscape of seedstick in Arabidopsis thaliana funiculus after fertilisation.BMC plant biology · 2024Article
- Acidothermus cellulolyticus E1 endoglucanase expressed in planta undergoes extensive hydroxyproline-O-glycosylation and exhibits enhanced impact on biomass digestibility.Plant cell reports · 2024Article
- The Growth Oscillator and Plant Stomata: An Open and Shut Case.Plants (Basel, Switzerland) · 2023Review
- Arabinogalactan Structures of Repetitive Serine-Hydroxyproline Glycomodule Expressed by Arabidopsis Cell Suspension Cultures.Plants (Basel, Switzerland) · 2023Article
- Review: structure and modifications of arabinogalactan proteins (AGPs).BMC plant biology · 2023Review
- Review
- Arabinogalactan Proteins: Focus on the Role in Cellulose Synthesis and Deposition during Plant Cell Wall Biogenesis.International journal of molecular sciences · 2022Review
- CAGEs are Golgi-localized GT31 enzymes involved in cellulose biosynthesis in Arabidopsis.The Plant journal : for cell and molecular biology · 2022Article
- Search for evolutionary roots of land plant arabinogalactan-proteins in charophytes: presence of a rhamnogalactan-protein in Spirogyra pratensis (Zygnematophyceae).The Plant journal : for cell and molecular biology · 2022Article
- Article
- Review
- A Molecular Pinball Machine of the Plasma Membrane Regulates Plant Growth-A New Paradigm.Cells · 2021Review
- Three β-Glucuronosyltransferase Genes Involved in Arabinogalactan Biosynthesis Function in Arabidopsis Growth and Development.Plants (Basel, Switzerland) · 2021Article
- Cracking the "Sugar Code": A Snapshot ofFrontiers in plant science · 2021Review
- Plant cell-secreted stem cell factor stimulates expansion and differentiation of hematopoietic stem cells.Process biochemistry (Barking, London, England) · 2021Article
- The Role of Arabinogalactan Type II Degradation in Plant-Microbe Interactions.Frontiers in microbiology · 2021Review
- Structural features conserved in subclass of type II arabinogalactan.Plant biotechnology (Tokyo, Japan) · 2020Article
- Systems identification and characterization of β-glucuronosyltransferase genes involved in arabinogalactan-protein biosynthesis in plant genomes.Scientific reports · 2020Article
- Exocyst mutants suppress pollen tube growth and cell wall structural defects of hydroxyproline O-arabinosyltransferase mutants.The Plant journal : for cell and molecular biology · 2020Article
- Golgi-localized exo-β1,3-galactosidases involved in cell expansion and root growth inThe Journal of biological chemistry · 2020Article
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Authors and funding
7 authors at 4 institutions in 2 countries.
Funding
Abstract
Classical arabinogalactan proteins partially defined by type II O-Hyp-linked arabinogalactans (Hyp-AGs) are structural components of the plant extracellular matrix. Recently we described the structure of a small Hyp-AG putatively based on repetitive trigalactosyl subunits and suggested that AGs are less complex and varied than generally supposed. Here we describe three additional AGs with similar subunits. The Hyp-AGs were isolated from two different arabinogalactan protein fusion glycoproteins expressed in tobacco cells; that is, a 22-residue Hyp-AG and a 20-residue Hyp-AG, both isolated from interferon alpha2b-(Ser-Hyp)(20), and a 14-residue Hyp-AG isolated from (Ala-Hyp)(51)-green fluorescent protein. We used NMR spectroscopy to establish the molecular structure of these Hyp-AGs, which share common features: (i) a galactan main chain composed of two 1-->3 beta-linked trigalactosyl blocks linked by a beta-1-->6 bond; (ii) bifurcated side chains with Ara, Rha, GlcUA, and a Gal 6-linked to Gal-1 and Gal-2 of the main-chain trigalactosyl repeats; (iii) a common side chain structure composed of up to six residues, the largest consisting of an alpha-L-Araf-(1-->5)-alpha-L-Araf-(1-->3)-alpha-L-Araf-(1-->3- unit and an alpha-L-Rhap-(1-->4)-beta-D-GlcUAp-(1-->6)-unit, both linked to Gal. The conformational ensemble obtained by using nuclear Overhauser effect data in structure calculations revealed a galactan main chain with a reverse turn involving the beta-1-->6 link between the trigalactosyl blocks, yielding a moderately compact structure stabilized by H-bonds.
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