Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Journal articles
  4. Ultrafast Energy Transfer from Photoexcited Tryptophan to the Haem in Cytochrome c
 
research article

Ultrafast Energy Transfer from Photoexcited Tryptophan to the Haem in Cytochrome c

Bacellar, Camila  
•
Rouxel, Jeremy R.  
•
Ingle, Rebecca A.  
Show more
March 9, 2023
The Journal of Physical Chemistry Letters

: We report femtosecond Fe K-edge absorption (XAS) and nonresonant X-ray emission (XES) spectra of ferric cytochrome C (Cyt c) upon excitation of the haem (>300 nm) or mixed excitation of the haem and tryptophan (<300 nm). The XAS and XES transients obtained in both excitation energy ranges show no evidence for electron transfer processes between photoexcited tryptophan (Trp) and the haem, but rather an ultrafast energy transfer, in agreement with previous ultrafast optical fluorescence and transient absorption studies. The reported (J. Phys. Chem. B 2011, 115 (46), 13723-13730) decay times of Trp fluorescence in ferrous (similar to 350 fs) and ferric (similar to 700 fs) Cyt c are among the shortest ever reported for Trp in a protein. The observed time scales cannot be rationalized in terms of Fo''rster or Dexter energy transfer mechanisms and call for a more thorough theoretical investigation.

  • Details
  • Metrics
Type
research article
DOI
10.1021/acs.jpclett.3c00218
Web of Science ID

WOS:000953252500001

Author(s)
Bacellar, Camila  
Rouxel, Jeremy R.  
Ingle, Rebecca A.  
Mancini, Giulia F.  
Kinschel, Dominik  
Cannelli, Oliviero  
Zhao, Yang  
Cirelli, Claudio
Knopp, Gregor
Szlachetko, Jakub
Show more
Date Issued

2023-03-09

Published in
The Journal of Physical Chemistry Letters
Volume

14

Issue

9

Start page

2425

End page

2432

Subjects

Chemistry, Physical

•

Nanoscience & Nanotechnology

•

Materials Science, Multidisciplinary

•

Physics, Atomic, Molecular & Chemical

•

Chemistry

•

Science & Technology - Other Topics

•

Materials Science

•

Physics

•

x-ray-absorption

•

fluorescence decay kinetics

•

electron-transfer reactions

•

long-range electron

•

transfer rates

•

femtosecond

•

dynamics

•

spectroscopy

•

picosecond

•

myoglobin

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

Available on Infoscience
April 10, 2023
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/196879
Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés