Author | dc.contributor.author | Yang, Yang | |
Author | dc.contributor.author | Linke, Martin | es_CL |
Author | dc.contributor.author | von Haimberger, Theodore | es_CL |
Author | dc.contributor.author | Hahn, Janina | es_CL |
Author | dc.contributor.author | Matute Morales, Ricardo | es_CL |
Author | dc.contributor.author | González, Leticia | es_CL |
Author | dc.contributor.author | Schmieder, Peter | es_CL |
Author | dc.contributor.author | Heyne, Karsten | es_CL |
Admission date | dc.date.accessioned | 2012-08-01T15:37:18Z | |
Available date | dc.date.available | 2012-08-01T15:37:18Z | |
Publication date | dc.date.issued | 2012 | |
Cita de ítem | dc.identifier.citation | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY Volume: 134 Issue: 3 Pages: 1408-1411 Published: JAN 25 2012 | es_CL |
Identifier | dc.identifier.other | DOI: 10.1021/ja209413d | |
Identifier | dc.identifier.uri | https://repositorio.uchile.cl/handle/2250/119532 | |
General note | dc.description | Artículo de publicación ISI | es_CL |
Abstract | dc.description.abstract | Photoisomerization of a protein bound chromophore is the basis of the light sensing and signaling responses of many photoreceptors. Z-to-E photoisomerization of the Pr Cph1 Delta 2 phytochrome has been investigated by polarization resolved femtosecond visible pump-infrared probe spectroscopy, which yields structural information on the Pr excited (Pr*), Pr ground, and lumi-R product states. By exhaustive search analysis, two photoreaction time constants of (4.7 +/- 1.4) and (30 +/- 5) ps were found. Ring D orientational change in the electronic excited state to the transition state (90 degrees twist) has been followed in real-time. Rotation of ring D takes place in the electronically excited state with a time constant of 30 +/- 5 ps. The photoisomerization is best explained by a single rotation around C-15=C-16 methine bridge in the Pr* state and a diffusive interaction with its protein surrounding. | es_CL |
Patrocinador | dc.description.sponsorship | Deutsche Forschungsgemeinschaft
SFB 498
GO 1059/2-1
Center for Supramolecular Interactions, Free University Berlin | es_CL |
Lenguage | dc.language.iso | en | es_CL |
Publisher | dc.publisher | AMER CHEMICAL SOC | es_CL |
Keywords | dc.subject | SUBPICOSECOND MIDINFRARED SPECTROSCOPY | es_CL |
Título | dc.title | Real-Time Tracking of Phytochrome's Orientational Changes During Pr Photoisomerization | es_CL |
Document type | dc.type | Artículo de revista | |