{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T19:16:40Z","timestamp":1788290200607,"version":"build-2803163510"},"reference-count":40,"publisher":"American Chemical Society (ACS)","issue":"34","license":[{"start":{"date-parts":[[2026,8,11]],"date-time":"2026-08-11T00:00:00Z","timestamp":1786406400000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-029"},{"start":{"date-parts":[[2026,8,11]],"date-time":"2026-08-11T00:00:00Z","timestamp":1786406400000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-037"},{"start":{"date-parts":[[2026,8,11]],"date-time":"2026-08-11T00:00:00Z","timestamp":1786406400000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-045"}],"funder":[{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["JP19H03187"],"award-info":[{"award-number":["JP19H03187"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["JP23KJ0158"],"award-info":[{"award-number":["JP23KJ0158"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["JP24H02063"],"award-info":[{"award-number":["JP24H02063"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002241","name":"Japan Science and Technology Agency","doi-asserted-by":"publisher","award":["JPMJSP2114"],"award-info":[{"award-number":["JPMJSP2114"]}],"id":[{"id":"10.13039\/501100002241","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,8,27]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Photosystem I (PSI) is a chlorophyll-binding protein complex that plays a central role in photosynthesis. PSI isolated from cyanobacteria, Thermosynechococcus vestitus, contains a light-harvesting system that consists of approximately 100 chlorophyll a molecules. The effect of the protein fluctuation dynamics on the excitation energy migration within the pigment array is fundamentally important. In 2009, Brecht and co-workers proposed that protein dynamics can induce variations in the excitation energy transfer (EET) pathways within PSI ( Brecht et al. Proc. Natl. Acad. Sci. U. S. A.2009, 106, 11857\u221211861.). However, direct evidence for the tuning of EET pathways by protein dynamics is still lacking. Recently, we used a cryogenic single-molecule excitation\u2013emission spectroscopy (SMEES) technique to determine the spatio-energetic relationship between antenna molecules and terminal emitters within PSI ( Zhang et al. J. Phys. Chem. B2026, 130, 104\u2212118.). Here, we further implement time-resolved SMEES measurements on PSIs at 80 K. Our results not only provide evidence for protein dynamics-induced modification of EET pathways but also validate the molecular mechanisms of PSI fluorescence blinking.<\/jats:p>","DOI":"10.1021\/acs.jpclett.6c01404","type":"journal-article","created":{"date-parts":[[2026,8,11]],"date-time":"2026-08-11T21:02:47Z","timestamp":1786482167000},"page":"9844-9850","source":"Crossref","is-referenced-by-count":0,"title":["Evidence for\nProtein Dynamics-Induced Energy Transfer\nPathway Changes in Photosynthetic Complexes"],"prefix":"10.1021","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9697-7251","authenticated-orcid":true,"given":"Xianjun","family":"Zhang","sequence":"first","affiliation":[{"name":"Tohoku University , , ,","place":["Sendai, Japan, 980-8578"]},{"name":"Tohoku University , , ,","place":["Sendai, Japan, 980-8578"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8212-3001","authenticated-orcid":true,"given":"Ryo","family":"Nagao","sequence":"additional","affiliation":[{"name":"Shizuoka University , , ,","place":["Shizuoka, Japan, 422-8529"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9369-1941","authenticated-orcid":true,"given":"Tatsuya","family":"Tomo","sequence":"additional","affiliation":[{"name":"Tokyo University of Sciences , , ,","place":["Tokyo, Japan, 162-8601"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3281-6827","authenticated-orcid":true,"given":"Takumi","family":"Noguchi","sequence":"additional","affiliation":[{"name":"Nagoya University , , ,","place":["Nagoya, Japan, 464-8602"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0090-7855","authenticated-orcid":true,"given":"Shen","family":"Ye","sequence":"additional","affiliation":[{"name":"Tohoku University , , ,","place":["Sendai, Japan, 980-8578"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7510-503X","authenticated-orcid":true,"given":"Yutaka","family":"Shibata","sequence":"additional","affiliation":[{"name":"Tohoku University , , ,","place":["Sendai, Japan, 980-8578"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,8,11]]},"reference":[{"key":"2026090114433221700_cit1","doi-asserted-by":"publisher","first-page":"909","DOI":"10.1038\/35082000","article-title":"Three-dimensional structure of cyanobacterial photosystem\nI at 2.5 \u00c5 resolution","volume":"411","author":"Jordan","year":"2001","journal-title":"Nature"},{"key":"2026090114433221700_cit2","doi-asserted-by":"publisher","first-page":"433","DOI":"10.1016\/S0006-3495(02)75181-3","article-title":"Light harvesting\nin photosystem I: modeling based on\nthe 2.5-\u00c5 structure of photosystem I from Synechococcus elongatus","volume":"83","author":"Byrdin","year":"2002","journal-title":"Biophys. J."},{"key":"2026090114433221700_cit3","doi-asserted-by":"publisher","DOI":"10.7554\/eLife.73990","article-title":"Structural\nbasis for the absence of low-energy chlorophylls\nin a photosystem I trimer from Gloeobacter violaceus","volume":"11","author":"Kato","year":"2022","journal-title":"Elife"},{"key":"2026090114433221700_cit4","doi-asserted-by":"publisher","first-page":"9086","DOI":"10.1021\/jp034778t","article-title":"Red spectral forms\nof chlorophylls in green plant PSI- a site-selective and high-pressure\nspectroscopy study","volume":"107","author":"Ihalainen","year":"2003","journal-title":"J. Phys. Chem. B"},{"key":"2026090114433221700_cit5","doi-asserted-by":"publisher","first-page":"10515","DOI":"10.1021\/jp049572m","article-title":"Red antenna states\nof PS I of cyanobacteria: Stark effect and interstate energy transfer","volume":"108","author":"Hsin","year":"2004","journal-title":"J. Phys. Chem. 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Phys."},{"key":"2026090114433221700_cit7","doi-asserted-by":"publisher","first-page":"799","DOI":"10.1021\/bi061975k","article-title":"Assignment\nof red antenna states in photosystem I from Thermosynechoccocus elongatus by single-molecule spectroscopy","volume":"46","author":"Brecht","year":"2007","journal-title":"Biochem."},{"key":"2026090114433221700_cit8","doi-asserted-by":"publisher","first-page":"5536","DOI":"10.1021\/bi800121t","article-title":"Red antenna\nstates of photosystem I from Synechocystis PCC 6803","volume":"47","author":"Brecht","year":"2008","journal-title":"Biochem."},{"key":"2026090114433221700_cit9","doi-asserted-by":"publisher","first-page":"8504","DOI":"10.1021\/acs.jpcb.0c05201","article-title":"On the red\nantenna states of photosystem I mutants from cyanobacteria synechocystis\nPCC 6803","volume":"124","author":"Khmelnitskiy","year":"2020","journal-title":"J. Phys. Chem. 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Soc."},{"key":"2026090114433221700_cit30","doi-asserted-by":"publisher","first-page":"389","DOI":"10.1007\/BF02183041","article-title":"Photophysics\nof the carotenoids associated with the xanthophyll cycle in photosynthesis","volume":"41","author":"Frank","year":"1994","journal-title":"Photosynth. Res."},{"key":"2026090114433221700_cit31","doi-asserted-by":"publisher","first-page":"575","DOI":"10.1038\/nature06262","article-title":"Identification\nof a mechanism of photoprotective energy dissipation in higher plants","volume":"450","author":"Ruban","year":"2007","journal-title":"Nature"},{"key":"2026090114433221700_cit32","doi-asserted-by":"publisher","first-page":"9363","DOI":"10.1021\/jp9830629","article-title":"Spectroscopy of single light-harvesting\ncomplexes from purple photosynthetic bacteria at 1.2 K","volume":"102","author":"van Oijen","year":"1998","journal-title":"J. Phys. Chem. 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U.S.A."},{"key":"2026090114433221700_cit39","first-page":"1","volume-title":"Adv. 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