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Literature DB >> 16592270

The triplet state in bacterial photosynthesis: Possible mechanisms of the primary photo-act.

Abstract

In vitro and in vivo triplet state electron paramagnetic resonance (epr) spectra of bacteriochlorophylls (Bchls) show important differences in (a) electron spin polarization (esp), and (b) zero field splitting (ZFS) parameters. The unusual esp and ZFS properties of the observed in vivo triplet state are best interpreted as arising from a short-lived radical pair precursor (not directly observable by epr) formed in or with the special pair of bacteriochlorophyll molecules involved in the primary photo-act.

Year: 1975 PMID： 16592270 PMCID： PMC432970 DOI： 10.1073/pnas.72.9.3270

Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN： 0027-8424 Impact factor: 11.205

14 in total

1. A THEORY OF LIGHT UTILIZATION IN PLANT PHOTOSYNTHESIS.

Authors: J FRANCK; J L ROSENBERG
Journal: J Theor Biol Date: 1964-09 Impact factor: 2.691

2. Picosecond detection of an intermediate in the photochemical reaction of bacterial photosynthesis.

Authors: M G Rockley; M W Windsor; R J Cogdell; W W Parson
Journal: Proc Natl Acad Sci U S A Date: 1975-06 Impact factor: 11.205

3. Models for antenna and reaction center chlorophylls.

Authors: J R Norris; H Scheer; J J Katz
Journal: Ann N Y Acad Sci Date: 1975-04-15 Impact factor: 5.691

4. The triplet state of reaction center bacteriochlorophyll: determination of a relative quantum yeild.

Authors: C A Wraight; J S Leigh; P L Dutton; R K Clayton
Journal: Biochim Biophys Acta Date: 1974-03-26

5. Primary events in the photosynthetic reaction centre from Rhodopseudomonas spheroides strain R26: triplet and oxidized states of bacteriochlorophyll and the identification of the primary electron acceptor.

Authors: P L Dutton; J S Leigh; D W Reed
Journal: Biochim Biophys Acta Date: 1973-04-05

6. Primary processes in photosynthesis: in situ ESR studies on the light induced oxidized and triplet state of reaction center bacteriochlorophyll.

Authors: P L Dutton; J S Leight; M Seibert
Journal: Biochem Biophys Res Commun Date: 1972-01-31 Impact factor: 3.575

7. Triplet states in photosynthesis.

Authors: R A Uphaus; J R Norris; J J Katz
Journal: Biochem Biophys Res Commun Date: 1974-12-11 Impact factor: 3.575

8. Reaction center bacteriochlorophyll triplet states: redox potential dependence and kinetics.

Authors: J S Leigh; P L Dutton
Journal: Biochim Biophys Acta Date: 1974-07-25

9. Electron paramagnetic resonance of chlorophyll-water aggregates.

Authors: J J Katz; K Ballschmiter; M Garcia-Morin; H H Strain; R A Uphaus
Journal: Proc Natl Acad Sci U S A Date: 1968-05 Impact factor: 11.205

10. The Crystal and Molecular Structure of Ethyl Chlorophyllide a.2H(2)O and Its Relationship to the Structure and Aggregation of Chlorophyll a.

Authors: C E Strouse
Journal: Proc Natl Acad Sci U S A Date: 1974-02 Impact factor: 11.205

33 in total

1. Triplet states in photosystem I of spinach chloroplasts and subchloroplast particles.

Authors: H A Frank; M B McLean; K Sauer
Journal: Proc Natl Acad Sci U S A Date: 1979-10 Impact factor: 11.205

2. Time line of discoveries: anoxygenic bacterial photosynthesis.

Authors: Howard Gest; Robert E Blankenship
Journal: Photosynth Res Date: 2004 Impact factor: 3.573

3. Photoprocesses in covalently linked pyrochlorophyllide dimer: Triplet state formation and opening and closing of hydroxylic linkages.

Authors: N Periasamy; H Linschitz; G L Closs; S G Boxer
Journal: Proc Natl Acad Sci U S A Date: 1978-06 Impact factor: 11.205

The triplet state in bacterial photosynthesis: Possible mechanisms of the primary photo-act.

1. A THEORY OF LIGHT UTILIZATION IN PLANT PHOTOSYNTHESIS.

2. Picosecond detection of an intermediate in the photochemical reaction of bacterial photosynthesis.

3. Models for antenna and reaction center chlorophylls.

4. The triplet state of reaction center bacteriochlorophyll: determination of a relative quantum yeild.

5. Primary events in the photosynthetic reaction centre from Rhodopseudomonas spheroides strain R26: triplet and oxidized states of bacteriochlorophyll and the identification of the primary electron acceptor.

6. Primary processes in photosynthesis: in situ ESR studies on the light induced oxidized and triplet state of reaction center bacteriochlorophyll.

7. Triplet states in photosynthesis.

8. Reaction center bacteriochlorophyll triplet states: redox potential dependence and kinetics.

9. Electron paramagnetic resonance of chlorophyll-water aggregates.

10. The Crystal and Molecular Structure of Ethyl Chlorophyllide a.2H(2)O and Its Relationship to the Structure and Aggregation of Chlorophyll a.

1. Triplet states in photosystem I of spinach chloroplasts and subchloroplast particles.

2. Time line of discoveries: anoxygenic bacterial photosynthesis.

3. Photoprocesses in covalently linked pyrochlorophyllide dimer: Triplet state formation and opening and closing of hydroxylic linkages.

4. Magnetic resonance spectroscopy of the primary state, P, of bacterial photosynthesis.

5. Experimental examination of the "energy upconversion" theory for green plant photosynthesis.

6. Magnetic characterization of the primary state of bacterial photosynthesis.

7. Chromophore organization in photosynthetic reaction centers: High-resolution magnetophotoselection.

8. Anisotropic magnetic interactions in the primary radical ion-pair of photosynthetic reaction centers.

9. The photoexcited triplet state as a probe of chromophore-protein interaction in myoglobin.

10. Electron paramagnetic resonance of the excited triplet state of metal-free and metal-substituted cytochrome c.