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β-转角

β-转角是是多肽链中常见的二级结构[1]

结构

β-转角由四个氨基酸组成,在第一个氨基酸的羰基和第四个氨基酸的氨基之间形成氢键[2]。 

β-循环(第一和第二类)

亚型

分为 βI-, βII- 和βIII-转角三种类型:

  • Β-II型 第三个氨基酸通常(但不是总是)是 甘氨酸

功能

Β-转角像其他转角一样,在改变 蛋白质结构中的氨基酸链的方向上作用。

参考

  1. ^ 周希澄主编. 常用生物科技词典. 郑州:河南科学技术出版社. 1989.02: 481. ISBN 7-5349-0205-3. 
  2. ^ 王镜岩,朱圣庚,徐长法编著. 生物化学教程. 北京:高等教育出版社. 2008.06: 61. ISBN 7-04-018363-3. 
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β-转角
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