3PL9

Crystal structure of spinach minor light-harvesting complex CP29 at 2.80 angstrom resolution

Summary for 3PL9

• Entry DOI: 10.2210/pdb3pl9/pdb
• Descriptor: Chlorophyll A-B binding protein, CHLOROPHYLL A, CHLOROPHYLL B, ... (9 entities in total)
• Functional Keywords: cp29, chlorophyll a-b binding protein, light-harvesting complex, membrane protein, plant, photosynthesis, chloroplast, thylakoid, photosystem ii
• Biological source: Spinacia oleracea (spinach)
• Total number of polymer chains: 1
• Total formula weight: 40938.09

Authors

Pan, X.W.,Li, M.,Wan, T.,Wang, L.F.,Jia, C.J.,Hou, Z.Q.,Zhao, X.L.,Zhang, J.P.,Chang, W.R. (deposition date: 2010-11-14, release date: 2011-02-09, Last modification date: 2024-03-20)

Primary citation

Pan, X.,Li, M.,Wan, T.,Wang, L.,Jia, C.,Hou, Z.,Zhao, X.,Zhang, J.,Chang, W.
Structural insights into energy regulation of light-harvesting complex CP29 from spinach.
Nat.Struct.Mol.Biol., 18:309-315, 2011

PubMed Abstract: CP29, one of the minor light-harvesting complexes of higher-plant photosystem II, absorbs and transfers solar energy for photosynthesis and also has important roles in photoprotection. We have solved the crystal structure of spinach CP29 at 2.80-Å resolution. Each CP29 monomer contains 13 chlorophyll and 3 carotenoid molecules, which differs considerably from the major light-harvesting complex LHCII and the previously proposed CP29 model. The 13 chlorophyll-binding sites are assigned as eight chlorophyll a sites, four chlorophyll b and one putative mixed site occupied by both chlorophylls a and b. Based on the present X-ray structure, an integrated pigment network in CP29 is constructed. Two special clusters of pigment molecules, namely a615-a611-a612-Lut and Vio(Zea)-a603-a609, have been identified and might function as potential energy-quenching centers and as the exit or entrance in energy-transfer pathways.

PubMed: 21297637
DOI: 10.1038/nsmb.2008

Experimental method

X-RAY DIFFRACTION (2.8 Å)