The mechanism for proton-coupled electron transfer from tyrosine in a model complex and comparisons with YZ oxidation in photosystem II

Martin Sjödin; Stenbjörn Styring; Björn Åkermark; Licheng Sun; Leif Hammarström; A. Melis; C. Dismukes; P. L. Dutton; M. Aukauloo; R. D. Britt; M. Iwaki

doi:10.1098/rstb.2002.1142

The mechanism for proton-coupled electron transfer from tyrosine in a model complex and comparisons with Y_Z oxidation in photosystem II

Martin Sjödin, Stenbjörn Styring, Björn Åkermark, Licheng Sun, Leif Hammarström^*, A. Melis, C. Dismukes, P. L. Dutton, M. Aukauloo, R. D. Britt, M. Iwaki

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

50 Citations (Scopus)

Abstract

In the water-oxidizing reactions of photosystem II (PSII), a tyrosine residue plays a key part as an intermediate electron-transfer reactant between the primary donor chlorophylls (the pigment P₆₈₀) and the water-oxidizing Mn cluster. The tyrosine is deprotonated upon oxidation, and the coupling between the proton reaction and electron transfer is of great mechanistic importance for the understanding of the water-oxidation mechanism. Within a programme on artificial photosynthesis, we have made and studied the proton-coupled tyrosine oxidation in a model system and been able to draw mechanistic conclusions that we use to interpret the analogous reactions in PSII.

Original language	English
Pages (from-to)	1471-1479
Number of pages	9
Journal	Philosophical Transactions of the Royal Society B: Biological Sciences
Volume	357
Issue number	1426
DOIs	https://doi.org/10.1098/rstb.2002.1142
Publication status	Published - 2002 Oct 29
Externally published	Yes

Keywords

Photochemistry
Photosystem II
Proton-coupled electron transfer
Ruthenium
Tyrosine

ASJC Scopus subject areas

Biochemistry, Genetics and Molecular Biology(all)
Agricultural and Biological Sciences(all)

Access to Document

10.1098/rstb.2002.1142

Cite this

Sjödin, M., Styring, S., Åkermark, B., Sun, L., Hammarström, L., Melis, A., Dismukes, C., Dutton, P. L., Aukauloo, M., Britt, R. D., & Iwaki, M. (2002). The mechanism for proton-coupled electron transfer from tyrosine in a model complex and comparisons with Y_Z oxidation in photosystem II. Philosophical Transactions of the Royal Society B: Biological Sciences, 357(1426), 1471-1479. https://doi.org/10.1098/rstb.2002.1142

The mechanism for proton-coupled electron transfer from tyrosine in a model complex and comparisons with Y_Z oxidation in photosystem II. / Sjödin, Martin; Styring, Stenbjörn; Åkermark, Björn et al.

In: Philosophical Transactions of the Royal Society B: Biological Sciences, Vol. 357, No. 1426, 29.10.2002, p. 1471-1479.

Research output: Contribution to journal › Article › peer-review

Sjödin, M, Styring, S, Åkermark, B, Sun, L, Hammarström, L, Melis, A, Dismukes, C, Dutton, PL, Aukauloo, M, Britt, RD & Iwaki, M 2002, 'The mechanism for proton-coupled electron transfer from tyrosine in a model complex and comparisons with Y_Z oxidation in photosystem II', Philosophical Transactions of the Royal Society B: Biological Sciences, vol. 357, no. 1426, pp. 1471-1479. https://doi.org/10.1098/rstb.2002.1142

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