Synthesis of Cellulose Precursors: The Involvement of Lipid‐Linked Sugars

Particulate preparations from the Chlorophyta Prototheca zopfii catalyze the incorporation of [14C]glucose from UDP‐[14C]glucose into lipids. These lipids have been characterized as lipid‐P‐glucose, lipid‐PP‐glucose, and lipid‐PP‐oligosaccharides. The lipid‐linked oligosaccharides were a mixture ran...

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Autores principales: HOPP, H.E., ROMERO, P.A., DALEO, G.R., PONT LEZICA, R.
Formato: JOUR
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Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00142956_v84_n2_p561_HOPP
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spelling todo:paper_00142956_v84_n2_p561_HOPP2023-10-03T14:11:58Z Synthesis of Cellulose Precursors: The Involvement of Lipid‐Linked Sugars HOPP, H.E. ROMERO, P.A. DALEO, G.R. PONT LEZICA, R. cellulose radioisotope animal experiment cell wall in vitro study Algae, Green Cellulose Dolichol Glycolipids Guanosine Diphosphate Sugars Oligosaccharides Polyisoprenyl Phosphates Temperature Uridine Diphosphate Uridine Diphosphate Glucose Uridine Monophosphate Particulate preparations from the Chlorophyta Prototheca zopfii catalyze the incorporation of [14C]glucose from UDP‐[14C]glucose into lipids. These lipids have been characterized as lipid‐P‐glucose, lipid‐PP‐glucose, and lipid‐PP‐oligosaccharides. The lipid‐linked oligosaccharides were a mixture ranging from a disaccharide to approximately a decasaccharide. Cellulase digestion and periodate oxidation showed that the oligosaccharides seem to be built of β‐1,4‐linked glucoses. The lipid moiety had the properties of dolichol. The glucolipids described appeared as precursors of a water‐soluble polymer. Treatments of this polymer with hydrolytic enzymes and periodate oxidation indicate that it could be a glycoprotein containing β‐1,4‐linked glucoses. When GDP‐glucose was added to the incubation mixture, the 14C‐labelled soluble polymer became insoluble in hot alkali. This insoluble polymer had the properties expected for cellulose. A scheme is proposed with the reactions involved in the initiation of cellulose biosynthesis. Copyright © 1978, Wiley Blackwell. All rights reserved JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00142956_v84_n2_p561_HOPP
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic cellulose
radioisotope
animal experiment
cell wall
in vitro study
Algae, Green
Cellulose
Dolichol
Glycolipids
Guanosine Diphosphate Sugars
Oligosaccharides
Polyisoprenyl Phosphates
Temperature
Uridine Diphosphate
Uridine Diphosphate Glucose
Uridine Monophosphate
spellingShingle cellulose
radioisotope
animal experiment
cell wall
in vitro study
Algae, Green
Cellulose
Dolichol
Glycolipids
Guanosine Diphosphate Sugars
Oligosaccharides
Polyisoprenyl Phosphates
Temperature
Uridine Diphosphate
Uridine Diphosphate Glucose
Uridine Monophosphate
HOPP, H.E.
ROMERO, P.A.
DALEO, G.R.
PONT LEZICA, R.
Synthesis of Cellulose Precursors: The Involvement of Lipid‐Linked Sugars
topic_facet cellulose
radioisotope
animal experiment
cell wall
in vitro study
Algae, Green
Cellulose
Dolichol
Glycolipids
Guanosine Diphosphate Sugars
Oligosaccharides
Polyisoprenyl Phosphates
Temperature
Uridine Diphosphate
Uridine Diphosphate Glucose
Uridine Monophosphate
description Particulate preparations from the Chlorophyta Prototheca zopfii catalyze the incorporation of [14C]glucose from UDP‐[14C]glucose into lipids. These lipids have been characterized as lipid‐P‐glucose, lipid‐PP‐glucose, and lipid‐PP‐oligosaccharides. The lipid‐linked oligosaccharides were a mixture ranging from a disaccharide to approximately a decasaccharide. Cellulase digestion and periodate oxidation showed that the oligosaccharides seem to be built of β‐1,4‐linked glucoses. The lipid moiety had the properties of dolichol. The glucolipids described appeared as precursors of a water‐soluble polymer. Treatments of this polymer with hydrolytic enzymes and periodate oxidation indicate that it could be a glycoprotein containing β‐1,4‐linked glucoses. When GDP‐glucose was added to the incubation mixture, the 14C‐labelled soluble polymer became insoluble in hot alkali. This insoluble polymer had the properties expected for cellulose. A scheme is proposed with the reactions involved in the initiation of cellulose biosynthesis. Copyright © 1978, Wiley Blackwell. All rights reserved
format JOUR
author HOPP, H.E.
ROMERO, P.A.
DALEO, G.R.
PONT LEZICA, R.
author_facet HOPP, H.E.
ROMERO, P.A.
DALEO, G.R.
PONT LEZICA, R.
author_sort HOPP, H.E.
title Synthesis of Cellulose Precursors: The Involvement of Lipid‐Linked Sugars
title_short Synthesis of Cellulose Precursors: The Involvement of Lipid‐Linked Sugars
title_full Synthesis of Cellulose Precursors: The Involvement of Lipid‐Linked Sugars
title_fullStr Synthesis of Cellulose Precursors: The Involvement of Lipid‐Linked Sugars
title_full_unstemmed Synthesis of Cellulose Precursors: The Involvement of Lipid‐Linked Sugars
title_sort synthesis of cellulose precursors: the involvement of lipid‐linked sugars
url http://hdl.handle.net/20.500.12110/paper_00142956_v84_n2_p561_HOPP
work_keys_str_mv AT hopphe synthesisofcelluloseprecursorstheinvolvementoflipidlinkedsugars
AT romeropa synthesisofcelluloseprecursorstheinvolvementoflipidlinkedsugars
AT daleogr synthesisofcelluloseprecursorstheinvolvementoflipidlinkedsugars
AT pontlezicar synthesisofcelluloseprecursorstheinvolvementoflipidlinkedsugars
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