Electron donors and acceptors in the initial steps of photosynthesis in purple bacteria: a personal account |
| |
Authors: | Parson William W |
| |
Institution: | (1) Department of Biochemistry, University of Washington, Box 357350, Seattle, WA, 98195-7350, USA ( |
| |
Abstract: | The discovery by Louis N. M. Duysens in the 1950s that illumination of photosynthetic purple bacteria can cause oxidation
of either a bacteriochlorophyll complex (P) or a cytochrome was followed by an extended period of uncertainty as to which
of these processes was the `primary' photochemical reaction. Similar questions arose later about the roles of bacteriopheophytin
(BPh) and quinones as the initial electron acceptor. This is a personal account of kinetic measurements that showed that electron
transfer from P to BPh occurs in the initial step, and that the oxidized bacteriochlorophyll complex (P+) then oxidizes the cytochrome while the reduced BPh transfers an electron to a quinone.
This revised version was published online in August 2006 with corrections to the Cover Date. |
| |
Keywords: | Britton Chance Roderick Clayton Don DeVault Louis N M Duysens photosynthesis reaction center electron transfer bacteriochlorophyll cytochrome oxidation kinetics lasers William Parson |
本文献已被 PubMed SpringerLink 等数据库收录! |