Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 132, Issue 5, Pages 1452-+Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja907690g
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Funding
- EPSRC
- NSF [CHE-0822587]
- U.S. Public Health Services [DK-007521]
- EPSRC [EP/E010466/1] Funding Source: UKRI
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [822587] Funding Source: National Science Foundation
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Ultrafast proton transfer dynamics on a short H-bond in a protein were studied through the time-resolved fluorescence of the S65T/H148D green fluorescent protein (GFP) mutant. In response to the change in chromophore pK(a) upon excitation, the donor-proton-acceptor structure evolves on a sub- 100 fs time scale, followed by picosecond time scale vibrational cooling and host structure reorganization.
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