A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Photoactive Yellow Protein Chromophore Photoisomerizes around a Single Bond if the Double Bond Is Locked (2020)

Mustalahti, S., Morozov, D., Luk, H. L., Pallerla, R. R., Myllyperkiö, P., Pettersson, M., Pihko, P. M., & Groenhof, G. (2020). Photoactive Yellow Protein Chromophore Photoisomerizes around a Single Bond if the Double Bond Is Locked. Journal of Physical Chemistry Letters, 11(6), 2177-2181. https://doi.org/10.1021/acs.jpclett.0c00060

JYU-tekijät tai -toimittajat

Mustalahti, Satu
Morozov, Dmitry
Luk, Hoi Ling
Pallerla, Rajanish
Myllyperkiö, Pasi
Pettersson, Mika
Pihko, Petri
Groenhof, Gerrit

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Mustalahti, Satu; Morozov, Dmitry; Luk, Hoi Ling; Pallerla, Rajanish R.; Myllyperkiö, Pasi; Pettersson, Mika; Pihko, Petri M.; Groenhof, Gerrit

Lehti tai sarja: Journal of Physical Chemistry Letters

eISSN: 1948-7185

Julkaisuvuosi: 2020

Volyymi: 11

Lehden numero: 6

Artikkelin sivunumerot: 2177-2181

Kustantaja: American Chemical Society

Julkaisumaa: Yhdysvallat (USA)

Julkaisun kieli: englanti

DOI: https://doi.org/10.1021/acs.jpclett.0c00060

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/68018

Tiivistelmä

Photoactivation in the Photoactive Yellow Protein, a bacterial blue light photoreceptor, proceeds via photo-isomerization of the double C=C bond in the covalently attached chromophore. Quantum chemistry calculations, however, have suggested that in addition to double bond photo-isomerization, the isolated chromophore and many of its analogues, can isomerize around a single C-C bond as well. Whereas double bond photo-isomerization has been observed with x-ray crystallography, experimental evidence for single bond photo-isomerization is currently lacking. Therefore, we have synthesized a chromophore analogue, in which the formal double bond is covalently locked in a cyclopentenone ring and carried out transient absorption spectroscopy experiments in combination with non-adiabatic molecular dynamics simulations to reveal that the locked chromophore isomerizes around the single bond upon photo-activation. Our work thus provides experimental evidence for single bond photo-isomerization in a photoactive yellow protein chromophore analogue and suggests that photo-isomerization is not restricted to the double bonds in conjugated systems. This insight may be useful for designing light-driven molecular switches or motors.

YSO-asiasanat: valokemia; kemialliset sidokset; proteiinit; isomeria

Vapaat asiasanat: photoactivation; photo-isomerization; photoactive yellow protein; single bond; double bond

Liittyvät organisaatiot

Hankkeet, joissa julkaisu on tehty

OKM-raportointi: Kyllä

Raportointivuosi: 2020

JUFO-taso: 3