title: Photodissociation pathways of gas-phase photoactive yellow protein chromophores.
abstract: The absorption dynamics of two model chromophores of the photoactive yellow protein were studied in gas-phase experiments. Using different time-resolving techniques with an overall sensitivity ranging from seconds down to a few nanoseconds, complex dynamics were revealed for the p -coumaric acid anion, involving both fragmentation and electron detachment as possible photoresponse channels. For the trans-thiophenyl-p-coumarate model, despite its more complex molecular structure, simpler decay dynamics showing only fragmentation were observed.
authors.affiliation: Department of Physics and Astronomy, University of Aarhus, 8000 Aarhus C, Denmark.
authors.forename: Lutz
authors.initials: L
authors.lastname: Lammich
authors.forename: Jyoti
authors.initials: J
authors.lastname: Rajput
authors.forename: Lars H
authors.initials: LH
authors.lastname: Andersen
mesh_terms: D001426:Bacterial Proteins / Q000502:physiology* / Q000528:radiation effects; D003373:Coumaric Acids / Q000737:chemistry; D004797:Enzyme-Linked Immunosorbent Assay; D020607:Halorhodospira halophila / Q000502:physiology* / Q000528:radiation effects; D007834:Lasers; D008027:Light; D010777:Photochemistry; D020283:Photoreceptors, Microbial / Q000502:physiology* / Q000528:radiation effects; D011789:Quantum Theory; D021241:Spectrometry, Mass, Electrospray Ionization; D055672:Static Electricity
chemical_list: D001426:Bacterial Proteins; D003373:Coumaric Acids; D020283:Photoreceptors, Microbial; C050162:photoactive yellow protein, Bacteria