Proteoglycans and their heterogeneous glycosaminoglycans at the atomic scale.
Proteoglycans and their heterogeneous glycosaminoglycans at the atomic scale.
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蛋白聚糖及其在原子量表处的异质糖胺聚糖。
DOI:
10.1021/bm5018386
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发表时间:
2015-03-09
影响因子:
6.2
通讯作者:
Almond, Andrew
中科院分区:
文献类型:
--
作者:
Sattelle, Benedict M.;Shakeri, Javad;Cliff, Matthew J.;Almond, Andrew
Proteoglycan spatiotemporal organization underpins extracellular matrix biology but atomic scale glimpses of this microarchitecture are obscured by glycosaminoglycan size and complexity. To overcome this, multi-microsecond aqueous simulations of chondroitin and dermatan sulfates were abstracted into a prior coarse-grained model, which was extended to heterogeneous glycosaminoglycans and small leucine-rich proteoglycans. Exploration of relationships between sequence and shape led to hypotheses that proteoglycan size is dependent on glycosaminoglycan unit composition but independent of sequence permutation. Uronic acid conformational equilibria were modulated by adjacent hexosamine sulfonation and iduronic acid increased glycosaminoglycan chain volume and rigidity, while glucuronic acid imparted chain plasticity. Consequently, block copolymeric glycosaminoglycans contained microarchitectures capable of multivalent binding to growth factors and collagen, with potential for interactional synergy at greater chain number. The described atomic scale views of proteoglycans and heterogeneous glycosaminoglycans provide structural routes to understanding their fundamental signaling and mechanical biological roles and development of new biomaterials.
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影响因子:
5.6
作者:
Almond, A;DeAngelis, PL;Blundell, CD
通讯作者:
Blundell, CD
影响因子:
4.3
作者:
Agrawal, PK;Jacquinet, JC;Krishna, NR
通讯作者:
Krishna, NR
影响因子:
4.1
作者:
FRANSSON, LA;COSTER, L;SJOBERG, I
通讯作者:
SJOBERG, I
影响因子:
2.9
作者:
KITCHEN, RG;CLELAND, RL
通讯作者:
CLELAND, RL
影响因子:
3
作者:
Duan, Y;Wu, C;Kollman, P
通讯作者:
Kollman, P