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[求助]
我想问一下CCP4中的PISA的问题
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PISA 在分析 1N8Z的pdb文件的时候，出现了附件图里面的这种问题 第5条 与 第6条虽然都是A和C链，但是两者的P值不同 我不太懂 结晶学 所以希望大家能告诉我差别在哪里！？ 以下是 CCP4 PISA的一些算法说明 Symmetry operation indicates the symmetry operation that should be applied to 2nd interfacing structure in order to obtain the respective interface. The symmetry operation is specified in fractional space relatively to the structure position as given in the corresponding PDB or user-uploaded file. Sym.Id indicates the symmetry operation that should be applied to 2nd interfacing structure in order to obtain the respective interface. The symmetry operation is specified in fractional space relatively to the structure position as given in the corresponding PDB or user-uploaded file. P值主要是指示界面特性的一个参数 手册里面的文字如下： The P-value is a probability measure of the specificity of the interface: * P=0.5 indicates that the ΔiG value is typical for this type of interface. * P>0.5 means that the interface is less hydrophobic than expected, suggesting that it is an artefact of crystal packing. * P<0.5 indicates interfaces with an unexpectedly large hydrophobicity, and thus a high specificity. 希望有人可以给我解释一下原理！谢谢！  ScreenClip.png |
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