Protein-Matrix Solvation Dynamics in the α Subunit of C-Phycocyanin

Autor:	Ruth R. Riter, Warren F. Beck, Maurice D. Edington
Rok vydání:	1996
Předmět:	Chemistry General Engineering Solvation Analytical chemistry Chromophore Photobleaching Spectral line Crystallography chemistry.chemical_compound symbols.namesake Phycocyanobilin Stokes shift symbols Stimulated emission Physical and Theoretical Chemistry Spectroscopy
Zdroj:	The Journal of Physical Chemistry. 100:14198-14205
ISSN:	1541-5740 0022-3654
DOI:	10.1021/jp960453j
Popis:	We have used femtosecond transient hole-burning (THB) spectroscopy to study single-chromophore dynamics at room temperature in the α subunit of C-phycocyanin, a cyanobacterial light-harvesting protein. The α subunit contains a single phycocyanobilin (open-chain tetrapyrrole) chromophore. A reasonable description of the THB spectra requires the presence of a broad excited-state absorption (ESA) line shape underlying the entire photobleaching/stimulated emission (PB/SE) region. The time evolution of the THB spectrum involves line broadening on the 100−200-fs time scale and a
Databáze:	OpenAIRE
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