天然蛋白质中残基的疏水性、亲水性以及径向和取向分布。
Hydrophobicity, hydrophilicity, and the radial and orientational distributions of residues in native proteins.
作者信息
Rackovsky S, Scheraga H A
出版信息
Proc Natl Acad Sci U S A. 1977 Dec;74(12):5248-51. doi: 10.1073/pnas.74.12.5248.
Abstract
The radial distributions of the Calpha and side-chain atoms in a sample of 13 native proteins have been examined. It is found that there are substantial differences in behavior between different atoms of the same amino acid. In particular, the Calpha atoms of polar residues show no particular preference for being far from the center of mass. In light of these results, a new criterion for hydrophobicity and hydrophilicity is proposed--namely, the orientational preference of the side chain. The distribution of this property is shown, and it is suggested that this provides a basis for incorporating hydrophobic interactions into a protein folding algorithm.
摘要
对13种天然蛋白质样本中Cα原子和侧链原子的径向分布进行了研究。发现同一氨基酸的不同原子在行为上存在显著差异。特别是，极性残基的Cα原子对远离质心并没有特别的偏好。鉴于这些结果，提出了一种新的疏水性和亲水性标准——即侧链的取向偏好。展示了这种性质的分布，并表明这为将疏水相互作用纳入蛋白质折叠算法提供了基础。
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