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荧光EXAFS数据证实，在HSA和BSA中，锌离子与第一配位层原子的核间距分别为0．201nm和0．203nm，配位数近似为4，很可能为4个氮原子配位，胱氨酸硫原子参与配位的可能性基本排除．
Fluorescence EXAFS data confirm that in HSA and BSA, the atomic distances between zinc ions and the first coordination layer atoms are 0.201 nm and 0.203 nm, respectively, and the coordination number is approximately 4, which is likely to be the coordination of four nitrogen atoms, Cystine sulfur atoms involved in the possibility of coordination basically ruled out.