2-DIMENSIONAL CRYSTALS OF STREPTAVIDIN ON BIOTINYLATED LIPID LAYERS AND THEIR INTERACTIONS WITH BIOTINYLATED MACROMOLECULES

被引:296
|
作者
DARST, SA [1 ]
AHLERS, M [1 ]
MELLER, PH [1 ]
KUBALEK, EW [1 ]
BLANKENBURG, R [1 ]
RIBI, HO [1 ]
RINGSDORF, H [1 ]
KORNBERG, RD [1 ]
机构
[1] UNIV MAINZ,INST ORGAN CHEM,W-6500 MAINZ,GERMANY
关键词
D O I
10.1016/S0006-3495(91)82232-9
中图分类号
Q6 [生物物理学];
学科分类号
071011 ;
摘要
Streptavidin forms two-dimensional crystals when specifically bound to layers of biotinylated lipids at the air/water interface. The three-dimensional structure of streptavidin determined from the crystals by electron crystallography corresponds well with the structure determined by x-ray crystallography. Comparison of the electron and x-ray crystallographic structures reveals the occurrence of free biotin-binding sites on the surface of the two-dimensional crystals facing the aqueous solution. The free biotin-binding sites could be specifically labeled with biotinylated ferritin. The streptavidin/biotinylated lipid system may provide a general approach for the formation of two-dimensional crystals of biotinylated macromolecules.
引用
收藏
页码:387 / 396
页数:10
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