Crystal structure of plant photosystem I.
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| Title: | Crystal structure of plant photosystem I. |
|---|---|
| Authors: | Ben-Shem, Adam, Frolow, Felix, Nelson, Nathan |
| Source: | Nature. 12/11/2003, Vol. 426 Issue 6967, p630-635. 6p. |
| Subjects: | Photosynthesis, Oxygen, Plants, Membrane proteins |
| Abstract: | Oxygenic photosynthesis is the principal producer of both oxygen and organic matter on Earth. The conversion of sunlight into chemical energy is driven by two multisubunit membrane protein complexes named photosystem I and II. We determined the crystal structure of the complete photosystem I (PSI) from a higher plant (Pisum sativum var. alaska) to 4.4?Å resolution. Its intricate structure shows 12 core subunits, 4 different light-harvesting membrane proteins (LHCI) assembled in a half-moon shape on one side of the core, 45 transmembrane helices, 167 chlorophylls, 3 Fe-S clusters and 2 phylloquinones. About 20 chlorophylls are positioned in strategic locations in the cleft between LHCI and the core. This structure provides a framework for exploration not only of energy and electron transfer but also of the evolutionary forces that shaped the photosynthetic apparatus of terrestrial plants after the divergence of chloroplasts from marine cyanobacteria one billion years ago. [ABSTRACT FROM AUTHOR] |
| Copyright of Nature is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: pbh DbLabel: Psychology and Behavioral Sciences Collection An: 11650768 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Crystal structure of plant photosystem I. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Ben-Shem%2C+Adam%22">Ben-Shem, Adam</searchLink><br /><searchLink fieldCode="AR" term="%22Frolow%2C+Felix%22">Frolow, Felix</searchLink><br /><searchLink fieldCode="AR" term="%22Nelson%2C+Nathan%22">Nelson, Nathan</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nature%22">Nature</searchLink>. 12/11/2003, Vol. 426 Issue 6967, p630-635. 6p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Photosynthesis%22">Photosynthesis</searchLink><br /><searchLink fieldCode="DE" term="%22Oxygen%22">Oxygen</searchLink><br /><searchLink fieldCode="DE" term="%22Plants%22">Plants</searchLink><br /><searchLink fieldCode="DE" term="%22Membrane+proteins%22">Membrane proteins</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Oxygenic photosynthesis is the principal producer of both oxygen and organic matter on Earth. The conversion of sunlight into chemical energy is driven by two multisubunit membrane protein complexes named photosystem I and II. We determined the crystal structure of the complete photosystem I (PSI) from a higher plant (Pisum sativum var. alaska) to 4.4?Å resolution. Its intricate structure shows 12 core subunits, 4 different light-harvesting membrane proteins (LHCI) assembled in a half-moon shape on one side of the core, 45 transmembrane helices, 167 chlorophylls, 3 Fe-S clusters and 2 phylloquinones. About 20 chlorophylls are positioned in strategic locations in the cleft between LHCI and the core. This structure provides a framework for exploration not only of energy and electron transfer but also of the evolutionary forces that shaped the photosynthetic apparatus of terrestrial plants after the divergence of chloroplasts from marine cyanobacteria one billion years ago. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Nature is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1038/nature02200 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 630 Subjects: – SubjectFull: Photosynthesis Type: general – SubjectFull: Oxygen Type: general – SubjectFull: Plants Type: general – SubjectFull: Membrane proteins Type: general Titles: – TitleFull: Crystal structure of plant photosystem I. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Ben-Shem, Adam – PersonEntity: Name: NameFull: Frolow, Felix – PersonEntity: Name: NameFull: Nelson, Nathan IsPartOfRelationships: – BibEntity: Dates: – D: 11 M: 12 Text: 12/11/2003 Type: published Y: 2003 Identifiers: – Type: issn-print Value: 00280836 Numbering: – Type: volume Value: 426 – Type: issue Value: 6967 Titles: – TitleFull: Nature Type: main |
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