{"created":"2023-05-15T15:25:48.107724+00:00","id":13585,"links":{},"metadata":{"_buckets":{"deposit":"7c37478f-f645-4fad-a789-01bd033614bc"},"_deposit":{"created_by":3,"id":"13585","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"13585"},"status":"published"},"_oai":{"id":"oai:sucra.repo.nii.ac.jp:00013585","sets":["94:426"]},"author_link":["16689","22598","22597"],"item_119_biblio_info_8":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2009","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"Part 3","bibliographicPageEnd":"996","bibliographicPageStart":"989","bibliographicVolumeNumber":"155","bibliographic_titles":[{"bibliographic_title":"Microbiology"}]}]},"item_119_date_31":{"attribute_name":"作成日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2009-09-15","subitem_date_issued_type":"Created"}]},"item_119_description_19":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Downregulation of photosystem I (PSI) content is an essential process for cyanobacteria to grow under high-light (HL) conditions. In a pmgA (sll 968) mutant of Synechocystis sp. PCC 6803, the levels of PSI content, chlorophyll and transcripts of the psaAB genes encoding reaction-centre subunits of PSI could not be maintained low during HL incubation, although the causal relationship among these phenotypes remains unknown. In this study, we modulated the activity of psaAB transcription or that of chlorophyll synthesis to estimate their contribution to the regulation of PSI content under HL conditions. Analysis of the psaAB-OX strain, in which the psaAB genes were overexpressed under HL conditions, revealed that the amount of psaAB transcript could not affect PSI content by itself. Suppression of chlorophyll synthesis by an inhibitor, laevulinic acid, in the pmgA mutant revealed that chlorophyll availability could be a determinant of PSI content under HL. It was also suggested that chlorophyll content under HL conditions is mainly regulated at the level of 5-aminolaevulinic acid synthesis. We conclude that, upon the shift to HL conditions, activities of psaAB transcription and of 5-aminolaevulinic acid synthesis are strictly downregulated by regulatory mechanism(s) independent of PmgA during the first 6 h, and then a PmgA-mediated regulatory mechanism becomes active after 6 h onward of HL incubation to maintain these activities at a low level.","subitem_description_type":"Abstract"}]},"item_119_description_21":{"attribute_name":"注記","attribute_value_mlt":[{"subitem_description":"This is a pre-copy-editing, author-produced PDF of an article accepted for publication in MICROBIOLOGY-SGM following peer review. The definitive publisher-authenticated version American Society for Microbiology, MICROBIOLOGY-SGM 155 (2009), 989-996; DOI  10.1099/mic.0.024018-0　online at: http://mic.sgmjournals.org/cgi/content/abstract/155/3/989","subitem_description_type":"Other"}]},"item_119_description_29":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"subitem_description":"text","subitem_description_type":"Other"}]},"item_119_description_30":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_119_publisher_11":{"attribute_name":"出版者名","attribute_value_mlt":[{"subitem_publisher":"Society for General Microbiology"}]},"item_119_relation_16":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"info:doi/10.1099/mic.0.024018-0","subitem_relation_type_select":"DOI"}}]},"item_119_source_id_14":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"13500872","subitem_source_identifier_type":"ISSN"}]},"item_119_text_27":{"attribute_name":"版","attribute_value_mlt":[{"subitem_text_value":"[著者版]"}]},"item_119_text_3":{"attribute_name":"著者 ローマ字","attribute_value_mlt":[{"subitem_text_value":"Muramatsu, Masayuki"},{"subitem_text_value":"Sonoike, Kintake"},{"subitem_text_value":"Hihara, Yukako"}]},"item_119_text_32":{"attribute_name":"アイテムID","attribute_value_mlt":[{"subitem_text_value":"A1002878"}]},"item_119_text_4":{"attribute_name":"著者 所属","attribute_value_mlt":[{"subitem_text_value":"&EMPTY&"},{"subitem_text_value":"&EMPTY&"},{"subitem_text_value":"埼玉大学大学院理工学研究科生命科学部門"}]},"item_119_text_5":{"attribute_name":"著者 所属(別言語)","attribute_value_mlt":[{"subitem_text_value":"Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo"},{"subitem_text_value":"Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo"},{"subitem_text_value":"Department of Biochemistry and Molecular Biology, Graduate School of Science and Engineering, Saitama Universit"}]},"item_119_text_9":{"attribute_name":"年月次","attribute_value_mlt":[{"subitem_text_value":"2009-3"}]},"item_119_version_type_28":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_ab4af688f83e57aa","subitem_version_type":"AM"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Muramatsu, Masayuki"}],"nameIdentifiers":[{"nameIdentifier":"22597","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sonoike, Kintake"}],"nameIdentifiers":[{"nameIdentifier":"22598","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"日原, 由香子"},{"creatorName":"ヒハラ, ユカコ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"16689","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"QfMesNBx","nameIdentifierScheme":"研究者総覧","nameIdentifierURI":"http://s-read.saitama-u.ac.jp/researchers/pages/researcher/QfMesNBx"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2018-01-24"}],"displaytype":"detail","filename":"A1002878.pdf","filesize":[{"value":"966.7 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"A1002878.pdf","url":"https://sucra.repo.nii.ac.jp/record/13585/files/A1002878.pdf"},"version_id":"78ec3622-446c-426c-9408-44785047bfb2"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Mechanism of downregulation of photosystem I content under high-light conditions in the cyanobacterium Synechocystis sp PCC 6803","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Mechanism of downregulation of photosystem I content under high-light conditions in the cyanobacterium Synechocystis sp PCC 6803"}]},"item_type_id":"119","owner":"3","path":["426"],"pubdate":{"attribute_name":"公開日","attribute_value":"2009-09-15"},"publish_date":"2009-09-15","publish_status":"0","recid":"13585","relation_version_is_last":true,"title":["Mechanism of downregulation of photosystem I content under high-light conditions in the cyanobacterium Synechocystis sp PCC 6803"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2023-05-16T09:26:41.951415+00:00"}