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人类唾液蛋白N端片段的构型Hot!

DOI: 10.11938/cjmr20150211, PP. 283-290

Keywords: 生物成矿,磷灰石,SN-15

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Abstract:

人类唾液蛋白Statherin是含有43残基的酸性磷酸化蛋白.此蛋白对磷酸钙具有较高的吸附性,已知其N端15残基的片段(SN-15)会吸附于磷灰石的表面.在该工作中,作者以液体核磁共振波谱学研究SN-15的分子结构.圆二色光谱显示SN-15在磷酸盐缓冲溶液中具α螺旋构型.根据高分辨核磁共振氢谱(COSY,TOCSY及NOESY)作者得到相关的NOE及J耦合数据,氢氘交换实验也进一步显示SN-15具α螺旋构型.

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