...
首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Critical Conditions for Adsorption of Calcium Ions onto Dipolar Lipid Membranes
【24h】

Critical Conditions for Adsorption of Calcium Ions onto Dipolar Lipid Membranes

机译:钙离子在偶极脂质膜上吸附的临界条件

获取原文
获取原文并翻译 | 示例
           

摘要

Dipolar lipid membranes may adsorb multivalent ions. The binding constant depends on the type of lipid and ions. In this paper, we focus on the adsorption of calcium ions onto 1,2-dilauroylphosphatidylcholine (DLPC) membrane. Using small-angle X-ray scattering we found that at ambient room temperature ca. 0.6 mM CaCl2 is a critical concentration at which calcium ions adsorbed to 30 mg/mL (ca. 48 mM) DLPC membrane. We then determined the structure of the lamellar phases formed at CaCl2 concentrations below and above the critical concentration and characterized the effect of temperature and incubation time on the adsorption process. Our findings suggest that calcium adsorption to DLPC membranes requires an initial nucleation phase.
机译:偶极脂质膜可能吸收多价离子。结合常数取决于脂质和离子的类型。在本文中,我们专注于钙离子在1,2-二茂铁酰磷脂酰胆碱(DLPC)膜上的吸附。使用小角度X射线散射,我们发现在环境室温下, 0.6 mM CaCl2是一个临界浓度,在该浓度下钙离子吸附到30 mg / mL(约48 mM)的DLPC膜上。然后,我们确定了在临界浓度以下和以上的CaCl2浓度下形成的层状相的结构,并表征了温度和孵育时间对吸附过程的影响。我们的发现表明钙吸附到DLPC膜上需要一个初始成核阶段。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号