6 5 Water Channels in Cell Membranes Every

6. 5 分子动力学模拟 Water Channels in Cell Membranes Every second about a billion water molecules (red and white spheres[球体] ) pass through a channel formed in the middle of an aquaporin[水通道] protein as shown by white (nonpolar) and green (polar) areas, and charged areas in blue (positive) and red (negative). The yellow sphere[球 体] highlights the path of a single water molecule. � 来翻� 哈？ 更多视频： http: //www. ks. uiuc. edu/Gallery /Movies/Channel. Proteins/

6. 5 分子动力学模拟 Electrical Current[电流] through a Bacterial Toxin[毒素] The movie shows a computer simulation in which the motion of ions from salt dissolved[溶 解] in the water can be seen. The positively charged potassium[钾] ions (in blue) move upward through the alphahemolysin[血溶素] (in green), while the negatively charged� 来翻� 哈？ chloride[氯] ions (in red) move downward, constituting an 更多视频：current. electric http: //www. ks. uiuc. edu/Gallery /Movies/Channel. Proteins/

6. 5 分子动力学模拟 Translocation of a Polypeptide Helix through Sec. Y Proteins serve a variety of roles in the cell. One protein, Sec. Y, manages the movement or 'translocation' of other protein segments across the membrane (i. e. , a polypeptide helix). The helix (in blue), forces open the pore ring (yellow) and displaces the plug � 来翻� 哈？ of Sec. Y (red), thus completing a protein translocation event. 更多视频： http: //www. ks. uiuc. edu/Gallery /Movies/Channel. Proteins/