Sequence conservation of light-harvesting and stress-response proteins in relation to the three-dimensional molecular structure of LHCII |
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Authors: | Beverley R Green Werner Kühlbrandt |
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Institution: | (1) Department of Botany, University of British Columbia, V6T 1Z4 Vancouver, B.C., Canada;(2) European Molecular Biology Laboratory, Meyerhofstr. 1, 6900 Heidelberg, Germany |
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Abstract: | The structure of pea light-harvesting complex LHCII determined to 3.4 Å resolution by electron crystallography (Kühlbrandt, Wang and Fujiyoshi (1994) Nature 367: 614–621) was examined to determine the relationship between structural elements and sequence motifs conserved in the extended family of light-harvesting antennas (Chl a/b, fucoxanthin Chl a/c proteins) and membrane-intrinsic stress-induced proteins (ELIPs) to which LHCII belongs. It is predicted that the eukaryotic ELIPs can bind at least four molecules of Chl. The one-helix prokaryotic ELIP of Synechococcus was modelled as a homodimer based on the high degree of conservation of residues involved in the interactions of the first (B) and third (A) helices of LHCII.Abbreviations CAB
Chl a/b-binding
- ELIP
early light-inducible protein
- FCP
fucoxanthin-Chl a/c protein
- Lut1, Lut2
lutein molecules 1 and 2 |
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Keywords: | chlorophyll chl a/b (CAB) protein light-harvesting antenna LHCII structure prediction sequence evolution gene family early light-inducible protein |
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