Isotropic B-factor and anisotropy.

aNumbers in parentheses refer to standard deviation.bThe mean anisotropy A is defined as the ratio of the smallest to the largest eigenvalue of U, where U is ADP tensor.cSer-3∶1 conformation 1; Ser-3∶2 conformation 2.a 括号内的数值代表标准差。b 平均各向异性值A定义为U的最小特征值与最大特征值的比值，其中U为各向异性位移参数张量（ADP tensor）。c 丝氨酸（Ser）3∶1对应构象1；丝氨酸（Ser）3∶2对应构象2。