Photooxidation and photoreduction of exogenous cytochrome c by photosystem II preparations after various modifications of the water-oxidizing complex
The redox interaction of exogenous cytochrome c 550 (Cyt) with PSII isolated from spinach was studied. Illumination of PSII particles in the presence of Cyt led to: ( 1 ) Cyt photooxidation by PSII reaction center (demonstrated at the first time), ( 2 ) Cyt photoreduction via O 2 −• photoproduced on...
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| Veröffentlicht in: | Photosynthetica 2018-03, Vol.56 (1), p.244-253 |
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| creator | Khorobrykh, A. A. Yanykin, D. V. Klimov, V. V. |
| description | The redox interaction of exogenous cytochrome
c
550
(Cyt) with PSII isolated from spinach was studied. Illumination of PSII particles in the presence of Cyt led to: (
1
) Cyt photooxidation by PSII reaction center (demonstrated at the first time), (
2
) Cyt photoreduction
via
O
2
−•
photoproduced on the acceptor side of PSII, and (
3
) Cyt photoreduction by reduced electron carriers of PSII. A step-by-step removal of components of water-oxidizing complex was accompanied by the appearance of Cyt photooxidation, an increase in the superoxide dismutase (SOD)-dependent Cyt photoreduction (related to O
2
−•
formation), and a decrease in the SOD-independent Cyt photoreduction. Re-addition of PsbO protein diminished the Cyt-induced restoration of electron transfer in PSII. Addition of diuron led to inhibition of these photoprocesses, while exogenous Mn
2+
inhibited only the Cyt
c
photooxidation. The results can be important for correct measurements of O
2
−•
photoproduction in PSII and for elucidation of the role of cytochrome
c
550
in cyanobacterial PSII. |
| doi_str_mv | 10.1007/s11099-017-0762-8 |
| format | Article |
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c
550
(Cyt) with PSII isolated from spinach was studied. Illumination of PSII particles in the presence of Cyt led to: (
1
) Cyt photooxidation by PSII reaction center (demonstrated at the first time), (
2
) Cyt photoreduction
via
O
2
−•
photoproduced on the acceptor side of PSII, and (
3
) Cyt photoreduction by reduced electron carriers of PSII. A step-by-step removal of components of water-oxidizing complex was accompanied by the appearance of Cyt photooxidation, an increase in the superoxide dismutase (SOD)-dependent Cyt photoreduction (related to O
2
−•
formation), and a decrease in the SOD-independent Cyt photoreduction. Re-addition of PsbO protein diminished the Cyt-induced restoration of electron transfer in PSII. Addition of diuron led to inhibition of these photoprocesses, while exogenous Mn
2+
inhibited only the Cyt
c
photooxidation. The results can be important for correct measurements of O
2
−•
photoproduction in PSII and for elucidation of the role of cytochrome
c
550
in cyanobacterial PSII.</description><identifier>ISSN: 0300-3604</identifier><identifier>EISSN: 1573-9058</identifier><identifier>DOI: 10.1007/s11099-017-0762-8</identifier><language>eng</language><publisher>Praha: The Institute of Experimental Biology of the Czech Academy of Sciences</publisher><subject>Biomedical and Life Sciences ; Cytochrome ; Cytochrome c ; Diuron ; Electron transfer ; Life Sciences ; Oxidation ; Photochemistry ; Photooxidation ; Photoproduction ; Photoreduction ; Photosystem II ; Plant Physiology ; Restoration ; Spinach ; Superoxide dismutase ; Water treatment</subject><ispartof>Photosynthetica, 2018-03, Vol.56 (1), p.244-253</ispartof><rights>The Institute of Experimental Botany 2018</rights><rights>Copyright Springer Science & Business Media 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c316t-bcb65758a0456431c1b998e7799abbaf44e1e21201a9b29c4c505a3727d5d20d3</citedby><cites>FETCH-LOGICAL-c316t-bcb65758a0456431c1b998e7799abbaf44e1e21201a9b29c4c505a3727d5d20d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11099-017-0762-8$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11099-017-0762-8$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Khorobrykh, A. A.</creatorcontrib><creatorcontrib>Yanykin, D. V.</creatorcontrib><creatorcontrib>Klimov, V. V.</creatorcontrib><title>Photooxidation and photoreduction of exogenous cytochrome c by photosystem II preparations after various modifications of the water-oxidizing complex</title><title>Photosynthetica</title><addtitle>Photosynthetica</addtitle><description>The redox interaction of exogenous cytochrome
c
550
(Cyt) with PSII isolated from spinach was studied. Illumination of PSII particles in the presence of Cyt led to: (
1
) Cyt photooxidation by PSII reaction center (demonstrated at the first time), (
2
) Cyt photoreduction
via
O
2
−•
photoproduced on the acceptor side of PSII, and (
3
) Cyt photoreduction by reduced electron carriers of PSII. A step-by-step removal of components of water-oxidizing complex was accompanied by the appearance of Cyt photooxidation, an increase in the superoxide dismutase (SOD)-dependent Cyt photoreduction (related to O
2
−•
formation), and a decrease in the SOD-independent Cyt photoreduction. Re-addition of PsbO protein diminished the Cyt-induced restoration of electron transfer in PSII. Addition of diuron led to inhibition of these photoprocesses, while exogenous Mn
2+
inhibited only the Cyt
c
photooxidation. The results can be important for correct measurements of O
2
−•
photoproduction in PSII and for elucidation of the role of cytochrome
c
550
in cyanobacterial PSII.</description><subject>Biomedical and Life Sciences</subject><subject>Cytochrome</subject><subject>Cytochrome c</subject><subject>Diuron</subject><subject>Electron transfer</subject><subject>Life Sciences</subject><subject>Oxidation</subject><subject>Photochemistry</subject><subject>Photooxidation</subject><subject>Photoproduction</subject><subject>Photoreduction</subject><subject>Photosystem II</subject><subject>Plant Physiology</subject><subject>Restoration</subject><subject>Spinach</subject><subject>Superoxide dismutase</subject><subject>Water treatment</subject><issn>0300-3604</issn><issn>1573-9058</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp1kMtOwzAQRS0EEqXwAewssTaM7TiOl6jiUakSLGBtOY7TpmriYKfQ8h_8L0lTiRWrkWbOuSNdhK4p3FIAeRcpBaUIUElApoxkJ2hCheREgchO0QQ4AOEpJOfoIsY1QG9xPkE_ryvfeb-rCtNVvsGmKXA7rIIrtvaw8iV2O790jd9GbPedt6vga4ctzvcjG_exczWez3EbXGvCISpiU3Yu4E8TqsGsfVGVlT3e-tBu5fCX6REyvK--q2aJra_bjdtdorPSbKK7Os4pen98eJs9k8XL03x2vyCW07Qjuc1TIUVmIBFpwqmluVKZk1Ipk-emTBJHHaMMqFE5UzaxAoThkslCFAwKPkU3Y24b_MfWxU6v_TY0_UvNgKVJllEleoqOlA0-xuBK3YaqNmGvKeihfT22r_v29dC-znqHjU7s2Wbpwl_y_9Iv5yCLsw</recordid><startdate>20180301</startdate><enddate>20180301</enddate><creator>Khorobrykh, A. A.</creator><creator>Yanykin, D. V.</creator><creator>Klimov, V. V.</creator><general>The Institute of Experimental Biology of the Czech Academy of Sciences</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20180301</creationdate><title>Photooxidation and photoreduction of exogenous cytochrome c by photosystem II preparations after various modifications of the water-oxidizing complex</title><author>Khorobrykh, A. A. ; Yanykin, D. V. ; Klimov, V. V.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c316t-bcb65758a0456431c1b998e7799abbaf44e1e21201a9b29c4c505a3727d5d20d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Biomedical and Life Sciences</topic><topic>Cytochrome</topic><topic>Cytochrome c</topic><topic>Diuron</topic><topic>Electron transfer</topic><topic>Life Sciences</topic><topic>Oxidation</topic><topic>Photochemistry</topic><topic>Photooxidation</topic><topic>Photoproduction</topic><topic>Photoreduction</topic><topic>Photosystem II</topic><topic>Plant Physiology</topic><topic>Restoration</topic><topic>Spinach</topic><topic>Superoxide dismutase</topic><topic>Water treatment</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Khorobrykh, A. A.</creatorcontrib><creatorcontrib>Yanykin, D. V.</creatorcontrib><creatorcontrib>Klimov, V. V.</creatorcontrib><collection>CrossRef</collection><jtitle>Photosynthetica</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Khorobrykh, A. A.</au><au>Yanykin, D. V.</au><au>Klimov, V. V.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Photooxidation and photoreduction of exogenous cytochrome c by photosystem II preparations after various modifications of the water-oxidizing complex</atitle><jtitle>Photosynthetica</jtitle><stitle>Photosynthetica</stitle><date>2018-03-01</date><risdate>2018</risdate><volume>56</volume><issue>1</issue><spage>244</spage><epage>253</epage><pages>244-253</pages><issn>0300-3604</issn><eissn>1573-9058</eissn><abstract>The redox interaction of exogenous cytochrome
c
550
(Cyt) with PSII isolated from spinach was studied. Illumination of PSII particles in the presence of Cyt led to: (
1
) Cyt photooxidation by PSII reaction center (demonstrated at the first time), (
2
) Cyt photoreduction
via
O
2
−•
photoproduced on the acceptor side of PSII, and (
3
) Cyt photoreduction by reduced electron carriers of PSII. A step-by-step removal of components of water-oxidizing complex was accompanied by the appearance of Cyt photooxidation, an increase in the superoxide dismutase (SOD)-dependent Cyt photoreduction (related to O
2
−•
formation), and a decrease in the SOD-independent Cyt photoreduction. Re-addition of PsbO protein diminished the Cyt-induced restoration of electron transfer in PSII. Addition of diuron led to inhibition of these photoprocesses, while exogenous Mn
2+
inhibited only the Cyt
c
photooxidation. The results can be important for correct measurements of O
2
−•
photoproduction in PSII and for elucidation of the role of cytochrome
c
550
in cyanobacterial PSII.</abstract><cop>Praha</cop><pub>The Institute of Experimental Biology of the Czech Academy of Sciences</pub><doi>10.1007/s11099-017-0762-8</doi><tpages>10</tpages></addata></record> |
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| subjects | Biomedical and Life Sciences Cytochrome Cytochrome c Diuron Electron transfer Life Sciences Oxidation Photochemistry Photooxidation Photoproduction Photoreduction Photosystem II Plant Physiology Restoration Spinach Superoxide dismutase Water treatment |
| title | Photooxidation and photoreduction of exogenous cytochrome c by photosystem II preparations after various modifications of the water-oxidizing complex |
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