Title |
An update on post-translational modifications of hydroxyproline-rich glycoproteins: toward a model highlighting their contribution to plant cell wall architecture
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Published in |
Frontiers in Plant Science, August 2014
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DOI | 10.3389/fpls.2014.00395 |
Pubmed ID | |
Authors |
May Hijazi, Silvia M. Velasquez, Elisabeth Jamet, José M. Estevez, Cécile Albenne |
Abstract |
Plant cell walls are composite structures mainly composed of polysaccharides, also containing a large set of proteins involved in diverse functions such as growth, environmental sensing, signaling, and defense. Research on cell wall proteins (CWPs) is a challenging field since present knowledge of their role into the structure and function of cell walls is very incomplete. Among CWPs, hydroxyproline (Hyp)-rich O-glycoproteins (HRGPs) were classified into three categories: (i) moderately glycosylated extensins (EXTs) able to form covalent scaffolds; (ii) hyperglycosylated arabinogalactan proteins (AGPs); and (iii) Hyp/proline (Pro)-Rich proteins (H/PRPs) that may be non-, weakly- or highly-glycosylated. In this review, we provide a description of the main features of their post-translational modifications (PTMs), biosynthesis, structure, and function. We propose a new model integrating HRGPs and their partners in cell walls. Altogether, they could form a continuous glyco-network with non-cellulosic polysaccharides via covalent bonds or non-covalent interactions, thus strongly contributing to cell wall architecture. |
X Demographics
Geographical breakdown
Country | Count | As % |
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Unknown | 1 | 100% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 1 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Japan | 1 | <1% |
United States | 1 | <1% |
Denmark | 1 | <1% |
Unknown | 143 | 98% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 30 | 21% |
Student > Master | 25 | 17% |
Researcher | 19 | 13% |
Student > Bachelor | 13 | 9% |
Student > Doctoral Student | 11 | 8% |
Other | 23 | 16% |
Unknown | 25 | 17% |
Readers by discipline | Count | As % |
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Agricultural and Biological Sciences | 69 | 47% |
Biochemistry, Genetics and Molecular Biology | 28 | 19% |
Chemistry | 7 | 5% |
Environmental Science | 4 | 3% |
Engineering | 2 | 1% |
Other | 5 | 3% |
Unknown | 31 | 21% |