An improved capping unit for stabilizing the ends of associated β-strands.
An improved capping unit for stabilizing the ends of associated β-strands.
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DOI:
10.1016/j.febslet.2014.11.006
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发表时间:
2014-12-20
期刊:
影响因子:
3.5
通讯作者:
Andersen NH
中科院分区:
文献类型:
--
作者:
Anderson JM;Kier BL;Shcherbakov AA;Andersen NH
Understanding beta structures has been hindered by the challenge of designing well-folded, small β-sheet systems. Kier et al. developed a β-capping motif that helped to solve this problem, but with limitations. Due to the design of the Kier β-cap, the termini are not fully available for chain extension. Combining Coulombic side chain attractions with a Trp/Trp edge to face interaction produced a new capping motif that provided greater β-sheet stability, even in systems lacking a turn locus with a high propensity for chain direction reversal. This Coulombic cap was applied to a number of difficult systems with improvements in stability observed in all cases, affording an additional tool in the study of protein structure and folding.
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