Allostery: an illustrated definition for the 'second secret of life'.

Allostery: an illustrated definition for the 'second secret of life'.
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变构:“生活的第二秘密”的插图定义。

DOI:
10.1016/j.tibs.2008.05.009
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发表时间:
2008-09
影响因子:
13.8
通讯作者:
Fenton, Aron W.
Fenton, Aron W.
中科院分区:
生物学1区
文献类型:
--
作者:
Fenton, Aron W.

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虽然变构调节是“生命的第二个秘密”,但引起变构的分子机制目前尚不清楚。在我看来,实验进展受到了一个常用但误导性的定义,即变构是由单一配体结合引起的蛋白质结构变化。Allostery在功能术语中更严格地定义为一种配体在不存在与存在第二种配体的情况下如何结合的比较。因此,由于两个结合事件中的每一个都涉及两个蛋白质复合物,所以变构的研究必须考虑四个复合物,而不仅仅是两个。这种比较可以区分变构和非变构蛋白质的变化,其重要性经常被忽视。当所有四个复合物的研究是不可行的,一个替代的,虽然有限的,战略可以确定的变构特异性变化的子集。
Although allosteric regulation is the ‘second secret of life’, the molecular mechanisms that give rise to allostery currently elude understanding. In my opinion, experimental progress is hampered by a commonly used but misleading definition of allostery as protein structural changes that are elicited by the binding of a single ligand. Allostery is more strictly defined in functional terms as a comparison of how one ligand binds in the absence, versus the presence, of a second ligand. Therefore, as each of the two binding events involves two protein complexes, a study of allostery must consider four complexes and not just two. Such a comparison can distinguish allosteric from non-allosteric protein changes, the importance of which is frequently overlooked. When a study of all four complexes is not feasible, an alternative, albeit limited, strategy can identify subsets of allosteric-specific changes.
DOI: 10.1002/prot.21800
发表时间: 2008-04-01
影响因子: 2.9
作者:
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