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Expansins - unique plant proteins
Komitet Biotechnologii PAN ; Instytut Chemii Bioorganicznej PAN
Expansins are extracellular proteins which are able to loosen cell walls thusmaking possible the extension and stress relaxation of plant walls. Expansinsare classified on the basis of sequence similarities and substrate specificity intotwo subfamilies of a- and p-expansins. The expansins’ mode of action is basedon the weakening of hydrogen bonds between cellulose microfibrils and on interacting matrix polymers, especially hemicelluloses. However, they do not reveal any hydrolytic or proteolytic activity. The activity of expansins is decisivefor the control of plant cells’ shape, and thus these proteins are thought to bean important component of biochemical machineries controlling cell growthand differentiation, as well as plant morphogenesis and development. This article reviews the advances made since the discovery of expansins and describestheir characteristic features, including protein structure and biochemical modeof action, molecular organisation of expansin-coding genes, and biological functions of these unusual proteins.
Biotechnologia, vol.59, 4 (2002)-.
0860-7796 ; oai:rcin.org.pl:137713 ; IChB B-55
Biblioteka Instytutu Chemii Bioorganicznej PAN
Licencja Creative Commons Uznanie autorstwa-Na tych samych warunkach 4.0
Instytut Chemii Bioorganicznej Polskiej Akademii Nauk
Instytut Chemii Bioorganicznej Polskiej Akademii Nauk
Oct 2, 2020
Sep 3, 2020
380
https://rcin.org.pl./publication/172917
Edition name | Date |
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Ekspansyny - niezwykłe białka roślin | Oct 2, 2020 |
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