Antenna complexes of photosystem II

The functional significance of this multitude of Chi alb proteins is unknown. Based on primary structure data and the hydropathy plot of the polypeptide chain, a three-dimensional structure model of the LHC II complex with three transmembrane segments (40% helices) was proposed for Lemna gibba (Fig. 15) [195]. This 

One has to assume that for optimal energy transfer in the PS II, the LHC II and the core complex CC II are in close contact. In this case, there are possibly also antenna systems of some form in the direct vicinity of the RC. The PS II core complex CC II of spinach and barley was isolated by means of detergent treatment of the membrane [201-206]. It contains at least 7 polypeptides the 47-51 kDa (CP 47, CP III, CPa-1) and 43 kDa (CP 43, CP IV, CPa-2) polypeptides with primary reaction activities (see below), two 32 kDa (the so-called D-1 and D-2 polypep- 

3 Zuber, H. (1985) in Antennas and Reaetion Centers of Photosynthetic Bacteria (Michel-Beyerle, M.E., ed.). Springer Series in Chemical Physics 42, pp. 2-14, Springer-Verlag, Berlin, New York, 

4 Zuber, H., Sidler, W., Fuglistaller. P., Brunisholz, R. and Theiler, R, (1985) in Molecular Biology of the Photosynthetic Apparatus (Arntzen, C., Bogorad, L., Bonitz, S. and Steinback, K., eds.), Cold Spring Harbor Symposia. 

5 Pearlstein, R.M. (1982) in Photosynthesis Energy Conversion by Plants and Bacteria (Govindjee, R., ed.) Vol. 1, pp. 293-3,3(1. Academic Press, New York. 

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In contrast to LHCI, the light-harvesting chlorophyll a/b-antennae complex of photosystem II (LHCII) is the major component of the particles on the complementary protoplasmic fracture face of appressed membranes (PFs) (Simpson, 1979, Olive et al., 1979), and does not appear to be a significant component of the reaction centre EFs particles, although this is disputed. The LHCII in PFs particles is, nevertheless, in contact with the reaction centre particles and may provide a pathway for excitation energy transfer between several photosystem II reaction centres. 

Groot M-L, Peterman EJG, Van Stokkum IHM, Dekker JP and Van Grondelle R (1995) Triplet and fluorescing states ofthe CP47 antenna complex of Photosystem II studied as a function of temperature. Biophys J 68 281-290... 

The Biogenesis and Assembly of the Major Antenna Complex of Photosystem II (LHCIIb) in Barley 661... 

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