Functional Differences of Photosystem II from Synechococcus elongatus and Spinach Characterized by Flash Induced Oxygen Evolution Patterns. Isgandarova, S., Renger, G., & Messinger, J. Biochemistry, 42(30):8929–8938, August, 2003. Publisher: American Chemical Society![Functional Differences of Photosystem II from Synechococcus elongatus and Spinach Characterized by Flash Induced Oxygen Evolution Patterns [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Detailed comparative studies of flash induced oxygen evolution patterns in thylakoids from the thermophilic cyanobacterium Synechococcus elongatus (S. elongatus; also referred to as Thermosynechococcus elongatus) and from spinach led to the following results: (i) the miss parameter α of S. elongatus thylakoids exhibits a pronounced temperature dependence with a minimum of 7% at 25 °C and values of 17 and 10% at 3 and 35 °C, respectively, while for spinach thylakoids α decreases continuously from 18% at 35 °C down to 8% at 3 °C; (ii) at all temperatures, the double hit probability β exceeds in S. elongatus the corresponding values of spinach by an increment Δβ of about 3%; (iii) at 20 °C the slow relaxation of the oxidation states S2 and S3 is about 15 and 30 times, respectively, slower in S. elongatus than in spinach, while the reduction of these S states by tyrosine YD is 2−3 times faster; (iv) the reaction S0YDox → S1YD is slower by a factor of 4 in S. elongatus as compared to spinach; and (v) the activation energies of S state dark relaxations in S. elongatus are all within a factor of 1.5 as compared to the previously reported values from spinach thylakoids [Vass, I., Deak, Z., and Hideg, E. (1990) Biochim. Biophys. Acta 1017, 63−69; Messinger, J., Schröder, W. P., and Renger, G. (1993) Biochemistry 32, 7658−7668], but the difference between the activation energies of the slow S2 and S3 decays is significantly larger in S. elongatus than in spinach. These results are discussed in terms of differences between cyanobacteria and higher plants on the acceptor side of PSII and a shift of the redox potential of the couple YD/YDox. The obtained data are also suitable to address questions about effects of the redox state of YD on the miss probability and the possibility of an S state dependent miss parameter.
@article{isgandarova_functional_2003,
title = {Functional {Differences} of {Photosystem} {II} from {Synechococcus} elongatus and {Spinach} {Characterized} by {Flash} {Induced} {Oxygen} {Evolution} {Patterns}},
volume = {42},
issn = {0006-2960},
url = {https://doi.org/10.1021/bi034744b},
doi = {10.1021/bi034744b},
abstract = {Detailed comparative studies of flash induced oxygen evolution patterns in thylakoids from the thermophilic cyanobacterium Synechococcus elongatus (S. elongatus; also referred to as Thermosynechococcus elongatus) and from spinach led to the following results: (i) the miss parameter α of S. elongatus thylakoids exhibits a pronounced temperature dependence with a minimum of 7\% at 25 °C and values of 17 and 10\% at 3 and 35 °C, respectively, while for spinach thylakoids α decreases continuously from 18\% at 35 °C down to 8\% at 3 °C; (ii) at all temperatures, the double hit probability β exceeds in S. elongatus the corresponding values of spinach by an increment Δβ of about 3\%; (iii) at 20 °C the slow relaxation of the oxidation states S2 and S3 is about 15 and 30 times, respectively, slower in S. elongatus than in spinach, while the reduction of these S states by tyrosine YD is 2−3 times faster; (iv) the reaction S0YDox → S1YD is slower by a factor of 4 in S. elongatus as compared to spinach; and (v) the activation energies of S state dark relaxations in S. elongatus are all within a factor of 1.5 as compared to the previously reported values from spinach thylakoids [Vass, I., Deak, Z., and Hideg, E. (1990) Biochim. Biophys. Acta 1017, 63−69; Messinger, J., Schröder, W. P., and Renger, G. (1993) Biochemistry 32, 7658−7668], but the difference between the activation energies of the slow S2 and S3 decays is significantly larger in S. elongatus than in spinach. These results are discussed in terms of differences between cyanobacteria and higher plants on the acceptor side of PSII and a shift of the redox potential of the couple YD/YDox. The obtained data are also suitable to address questions about effects of the redox state of YD on the miss probability and the possibility of an S state dependent miss parameter.},
number = {30},
urldate = {2024-11-29},
journal = {Biochemistry},
author = {Isgandarova, Sabina and Renger, Gernot and Messinger, Johannes},
month = aug,
year = {2003},
note = {Publisher: American Chemical Society},
pages = {8929--8938},
}
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(1990) Biochim. Biophys. Acta 1017, 63−69; Messinger, J., Schröder, W. P., and Renger, G. (1993) Biochemistry 32, 7658−7668], but the difference between the activation energies of the slow S2 and S3 decays is significantly larger in S. elongatus than in spinach. These results are discussed in terms of differences between cyanobacteria and higher plants on the acceptor side of PSII and a shift of the redox potential of the couple YD/YDox. The obtained data are also suitable to address questions about effects of the redox state of YD on the miss probability and the possibility of an S state dependent miss parameter.","number":"30","urldate":"2024-11-29","journal":"Biochemistry","author":[{"propositions":[],"lastnames":["Isgandarova"],"firstnames":["Sabina"],"suffixes":[]},{"propositions":[],"lastnames":["Renger"],"firstnames":["Gernot"],"suffixes":[]},{"propositions":[],"lastnames":["Messinger"],"firstnames":["Johannes"],"suffixes":[]}],"month":"August","year":"2003","note":"Publisher: American Chemical Society","pages":"8929–8938","bibtex":"@article{isgandarova_functional_2003,\n\ttitle = {Functional {Differences} of {Photosystem} {II} from {Synechococcus} elongatus and {Spinach} {Characterized} by {Flash} {Induced} {Oxygen} {Evolution} {Patterns}},\n\tvolume = {42},\n\tissn = {0006-2960},\n\turl = {https://doi.org/10.1021/bi034744b},\n\tdoi = {10.1021/bi034744b},\n\tabstract = {Detailed comparative studies of flash induced oxygen evolution patterns in thylakoids from the thermophilic cyanobacterium Synechococcus elongatus (S. elongatus; also referred to as Thermosynechococcus elongatus) and from spinach led to the following results: (i) the miss parameter α of S. elongatus thylakoids exhibits a pronounced temperature dependence with a minimum of 7\\% at 25 °C and values of 17 and 10\\% at 3 and 35 °C, respectively, while for spinach thylakoids α decreases continuously from 18\\% at 35 °C down to 8\\% at 3 °C; (ii) at all temperatures, the double hit probability β exceeds in S. elongatus the corresponding values of spinach by an increment Δβ of about 3\\%; (iii) at 20 °C the slow relaxation of the oxidation states S2 and S3 is about 15 and 30 times, respectively, slower in S. elongatus than in spinach, while the reduction of these S states by tyrosine YD is 2−3 times faster; (iv) the reaction S0YDox → S1YD is slower by a factor of 4 in S. elongatus as compared to spinach; and (v) the activation energies of S state dark relaxations in S. elongatus are all within a factor of 1.5 as compared to the previously reported values from spinach thylakoids [Vass, I., Deak, Z., and Hideg, E. 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