title: Evolution of plant cell wall: Arabinogalactan-proteins from three moss genera show structural differences compared to seed plants.
abstract: Arabinogalactan-proteins (AGPs) are important proteoglycans of plant cell walls. They seem to be present in most, if not all seed plants, but their occurrence and structure in bryophytes is widely unknown and actually the focus of AGP research. With regard to evolution of plant cell wall, we isolated AGPs from the three mosses Sphagnum sp., Physcomitrella patens and Polytrichastrum formosum. The moss AGPs show structural characteristics common for AGPs of seed plants, but also unique features, especially 3-O-methyl-rhamnose (trivial name acofriose) as terminal monosaccharide not found in arabinogalactan-proteins of angiosperms and 1,2,3-linked galactose as branching point never found in arabinogalactan-proteins before.
authors.affiliation: Pharmaceutical Institute, Department of Pharmaceutical Biology, Christian-Albrechts-University of Kiel, Gutenbergstr. 76, 24118 Kiel, Germany. Electronic address: dbartels@pharmazie.uni-kiel.de.
authors.forename: Desirée
authors.initials: D
authors.lastname: Bartels
authors.affiliation: Pharmaceutical Institute, Department of Pharmaceutical Biology, Christian-Albrechts-University of Kiel, Gutenbergstr. 76, 24118 Kiel, Germany. Electronic address: abaumann@pharmazie.uni-kiel.de.
authors.forename: Alexander
authors.initials: A
authors.lastname: Baumann
authors.affiliation: Pharmaceutical Institute, Department of Pharmaceutical Biology, Christian-Albrechts-University of Kiel, Gutenbergstr. 76, 24118 Kiel, Germany. Electronic address: mmaeder@pharmazie.uni-kiel.de.
authors.forename: Malte
authors.initials: M
authors.lastname: Maeder
authors.affiliation: Pharmaceutical Institute, Department of Pharmaceutical Biology, Christian-Albrechts-University of Kiel, Gutenbergstr. 76, 24118 Kiel, Germany. Electronic address: tgeske@pharmazie.uni-kiel.de.
authors.forename: Thomas
authors.initials: T
authors.lastname: Geske
authors.affiliation: Pharmaceutical Institute, Department of Pharmaceutical Biology, Christian-Albrechts-University of Kiel, Gutenbergstr. 76, 24118 Kiel, Germany. Electronic address: mheise@pharmazie.uni-kiel.de.
authors.forename: Esther Marie
authors.initials: EM
authors.lastname: Heise
authors.affiliation: Biocenter Klein Flottbek, University of Hamburg, Ohnhorststr. 18, 22609 Hamburg, Germany. Electronic address: klaus.von.schwartzenberg@uni-hamburg.de.
authors.forename: Klaus
authors.initials: K
authors.lastname: von Schwartzenberg
authors.affiliation: Pharmaceutical Institute, Department of Pharmaceutical Biology, Christian-Albrechts-University of Kiel, Gutenbergstr. 76, 24118 Kiel, Germany. Electronic address: bclassen@pharmazie.uni-kiel.de.
authors.forename: Birgit
authors.initials: B
authors.lastname: Classen
mesh_terms: D044002:Bryophyta / Q000737:chemistry*; D002473:Cell Wall / Q000737:chemistry*; D019684:Magnoliopsida; D009088:Mucoproteins / Q000737:chemistry*; D059828:Plant Cells; D010940:Plant Proteins / Q000737:chemistry*
chemical_list: D009088:Mucoproteins; D010940:Plant Proteins; C006619:arabinogalactan proteins
keywords: 3-O-Methyl-rhamnose; Arabinogalactan-protein; Moss; Plant cell wall; Structure elucidation