کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5157320 | 1500600 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Metrics of rhamnogalacturonan I with β-(1â4)-linked galactan side chains and structural basis for its self-aggregation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Within the family of plant cell wall polysaccharides rhamnogalacturonans I are the most diverse and structurally complex members. In present study we characterize the 3-dimensional structures and dynamic features of the constituents of RG-I along MD trajectories. It is demonstrated that extended threefold helical structure of the rhamnogalacturonan linear backbone is the most energetically favorable motif. Branching helps to stabilize a conformer of the backbone twisted along 1â2 glycosidic linkage triggering the orientation of long side chains without altering the extended overall backbone chain conformation. Formation of anti-parallel pairing of the β-galactan side chains allows us to suggest a novel mode of non-covalent cross-linking in pectins. Studied structural elements are organized to report the first attempt to characterize 3D structure of RG-I focusing on the special case of flax tertiary cell wall and elucidate the structural basis underlying the formation of RG-I self-associates and functional role of RG-I in planta.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 158, 20 February 2017, Pages 93-101
Journal: Carbohydrate Polymers - Volume 158, 20 February 2017, Pages 93-101
نویسندگان
Olga N. Makshakova, Tatyana A. Gorshkova, Polina V. Mikshina, Yuriy F. Zuev, Serge Perez,