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PHOTOSYNTHESIS. A 12 Å carotenoid translocation in a photoswitch associated with cyanobacterial photoprotection

Leverenz, Ryan L ; Sutter, Markus ; Wilson, Adjélé ; Gupta, Sayan ; Thurotte, Adrien ; Bourcier de Carbon, Céline ; Petzold, Christopher J ; Ralston, Corie ; Perreau, François ; Kirilovsky, Diana ; Kerfeld, Cheryl A; Drouet, Catherine (Editor)

Science, 26 June 2015, Vol.348(6242), pp.1463-6 [Tạp chí có phản biện]

ISSN: 0036-8075 ; E-ISSN: 1095-9203 ; DOI: 10.1126/science.aaa7234

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  • Nhan đề:
    PHOTOSYNTHESIS. A 12 Å carotenoid translocation in a photoswitch associated with cyanobacterial photoprotection
  • Tác giả: Leverenz, Ryan L ; Sutter, Markus ; Wilson, Adjélé ; Gupta, Sayan ; Thurotte, Adrien ; Bourcier de Carbon, Céline ; Petzold, Christopher J ; Ralston, Corie ; Perreau, François ; Kirilovsky, Diana ; Kerfeld, Cheryl A
  • Drouet, Catherine (Editor)
  • Chủ đề: Life Sciences ; Sciences (General) ; Biology
  • Là 1 phần của: Science, 26 June 2015, Vol.348(6242), pp.1463-6
  • Mô tả: Pigment-protein and pigment-pigment interactions are of fundamental importance to the light-harvesting and photoprotective functions essential to oxygenic photosynthesis. The orange carotenoid protein (OCP) functions as both a sensor of light and effector of photoprotective energy dissipation in cyanobacteria. We report the atomic-resolution structure of an active form of the OCP consisting of the N-terminal domain and a single noncovalently bound carotenoid pigment. The crystal structure, combined with additional solution-state structural data, reveals that OCP photoactivation is accompanied by a 12 angstrom translocation of the pigment within the protein and a reconfiguration of carotenoid-protein interactions. Our results identify the origin of the photochromic changes in the OCP triggered by light and reveal the structural determinants required for interaction with the light-harvesting antenna during photoprotection.
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 0036-8075 ; E-ISSN: 1095-9203 ; DOI: 10.1126/science.aaa7234

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