Tissue specificity and the human protein interaction network.

Tissue specificity and the human protein interaction network.
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DOI:
10.1038/msb.2009.17
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发表时间:
2009
影响因子:
9.9
通讯作者:
Lehner, Ben
Lehner, Ben
中科院分区:
生物学1区
文献类型:
--
作者:
Bossi, Alice;Lehner, Ben

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蛋白质相互作用网络描述了蛋白质之间可能发生的一组物理关联。然而,在任何特定的细胞或组织内,仅表达蛋白质的子集,因此只能发生相互作用的子集。整合相互作用和表达数据,我们在这里分析蛋白质表达和人类身体相互作用之间的相互作用。仅在有限的细胞类型中表达的蛋白质,例如最近进化的蛋白质,几乎不产生物理相互作用。然而,大多数组织特异性蛋白质确实与普遍表达的蛋白质结合,因此可以通过招募或修改核心细胞过程来发挥作用。相反,大多数在所有细胞中表达的“看家”蛋白质也会产生高度组织特异性的蛋白质相互作用。这些结果提出了组织特异性生物学进化的模型,并表明大多数(可能是全部)“看家”蛋白质实际上具有重要的组织特异性分子相互作用。
A protein interaction network describes a set of physical associations that can occur between proteins. However, within any particular cell or tissue only a subset of proteins is expressed and so only a subset of interactions can occur. Integrating interaction and expression data, we analyze here this interplay between protein expression and physical interactions in humans. Proteins only expressed in restricted cell types, like recently evolved proteins, make few physical interactions. Most tissue-specific proteins do, however, bind to universally expressed proteins, and so can function by recruiting or modifying core cellular processes. Conversely, most ‘housekeeping' proteins that are expressed in all cells also make highly tissue-specific protein interactions. These results suggest a model for the evolution of tissue-specific biology, and show that most, and possibly all, ‘housekeeping' proteins actually have important tissue-specific molecular interactions.
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