Xiche Hu and Klaus Schulten.
A model for the light-harvesting complex I (B875) of
Rhodobacter sphaeroides.
Biophysical Journal, 75:683-694, 1998.
HU98A
The light harvesting complex I (LH-I) of Rhodobacter sphaeroides has been modeled computationally as a hexadecamer of heterodimers, based on a close homology of the heterodimer to that of light harvesting complex II (LH-II) of Rhodospirillum molischianum. The resulting LH-I structure yields an electron density projection map that is in agreement with an 8.5 resolution electron microscopy projection map for the highly homologous LH-I of Rhodospirillum rubrum. A complex of the modeled LH-I with the photosynthetic reaction center of the same species has been obtained by energy minimization. This complex and the available structures of LH-II from Rhodospirillum molischianum and Rhodopseudomonas acidophila furnish a complete model of the pigment organization in the photosynthetic membrane of purple bacteria.
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