Abstract
Large and well-ordered two-dimensional (2D) crystals of the light-harvesting chlorophyll a/b protein complexes (LHC-II) from cucumber and spinach chloroplasts were produced by the so-called batch method. The twodimensional structures of these crystals were examined at about 1.5 nm resolution by electron microscopy and image processing. The projection maps showed that there were similar, but not identical, structure features between two different LHC-II complexes. A cmparison between 2D crystal formations of the two different LHC-II complexes was done and some factors affecting 2D crystallization of the membrane proteins were analyzed. The relations of the structures of the LHC-II complexes to their polypeptide components and Chl a/b ratio were also discussed.
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Kühlbrandt, W., Two-dimensional crystallization of membrane proteins,Quarterly Reviews of Bioplaysics, 1992, 25: 1.
Amos, L. A., Henderson, R., Unwin, P. N. T., Three-dimensional structure determination by electron microscopy of two-dimensional crystals,Prog. Biophys. Molec. Biol., 1982, 39: 183.
Henderson, R., Baldwin, J. M., Ceska, T. A. et al., Model for the structure of bacteriorhodopsin based on high-resolution electron cryo-microscopy,J. Mol. Biol., 1990, 213: 899.
Li, J., Light-harvesting chlorophyll a/b-protein: three-dimensional structure of a reconstituted membrance lattice in negatively stain,Proc. Sci. USA, 1985, 82: 386.
Lyon, M. K., Unwin, P. N. T., Two-dimensional structure of the light-harvesting chlorophyll a/b complex by cryoelectron microscopy,J. Cell Biol., 1988, 106: 1515.
Kühlbrandt, W., Toler, T., Wehrli, E., The structure of membrane crystals of the light-harvesting chlorophyll a/b protein complex.J. Cell. Biol., 1983, 96: 1414.
Kühlbrandt, W., Wang, D. N., Fujiyoshi, Y., Atomic model of plant light-harvesting complex by elactron crystallography.Nature, 1994, 367: 614.
Wang, D. N., Kühlbrandi, W., High-resolution electron crystallography of light-harvesting chlorophyll a/b-protein complex in three different media,j. Mol. Biol., 1991, 217: 691.
Lou Shiqing, Wang Kebin, Kuang Tingyun et al., A comparative study on PS II light-harvesting chlorophyll a/b protein complexes between spinach and cucomber,Acta Rotanica Sinica (in Chinese), 1995, 37: 192.
Michel, H., Griffin, P. R., Shabanowith, J. et el., Tandem mass spectrometry identifies sites of three post-translational modifications of spinach light-harvesting chlorophyll protein II,J. Biol. Chem., 1991, 266: 17584.
Xu Chunhui, Zhao Fuhong, Wang Kebin et al., Isolation of light-harvesting chlorophyll a/b protein complex and its spectral characteristics,Botanical Research, 1993, (7): 198.
Nuβberger, S., Dörr, K., Wang, D. N., Lipid-protein interactions in crystal of plant light-harvesting complex,J. Mol. Biol., 1993, 234: 347.
Kühlbrandt, W., Three-dimensional structure of the light-harvesting chlorophyll a/b-protein complex.Nature, 1984. 307: 478.
Kühlbrandt, W., Wang, D. N., Three-dimensional structure of light-harvesting complex determined by electron crystallography.Nature, 1991, 350: 130.
Unwin, P. N. T., Ennis, P. D., Two configurations of a channel-forming membrane protein,Nature, 1984, 307: 609.
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Project supported by the National Natural Science Foundation of China (Grant No.39370165).
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Xu, W., Zhang, X., Lou, S. et al. Two-dimensional crystallization and preliminary structure analysis of LHC-II from cucumber and spinach. Sci. China Ser. C.-Life Sci. 41, 265–271 (1998). https://doi.org/10.1007/BF02895101
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DOI: https://doi.org/10.1007/BF02895101