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The quantum yield of the formation of the charge-separated state P + Q A− in reaction centers (RCs) of Rhodobacter sphaeroides R-26, in which the bacteriopheophytins in both the active (A) and the inactive (B) branch are replaced by pheophytin (Pheo) a (Φ A,B -exchanged RCs), shows a positive temperature dependence: it is 38±5% between 10 and 60 K, increases with temperature...
Bacteriopheophytin (BPheo) a of reaction centers (RCs) of Rhodobacter sphaeroides R-26 has been exchanged with pheophytin (Pheo) a. By varying the incubation temperature of the pigment exchange procedure two types of RCs were obtained, with either only the BPheo in the B-chain (BPheo B ) or both BPheo B and BPheo A replaced by Pheoa . For the two RC types absorption and CD...
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