Stabilization Of Terahertz Vibrational Modes In Illuminated Orange Carotenoid Protein Crystals

Paper (Bio 5)

Tue, 10 Nov 2020 06:00pm to 06:15pm

Room: Kleinhans

Attend in Zoom

Orange carotenoid protein (OCP) controls efficiency of the phycobilisome (PBS), the light harvesting antenna in cyanobacteria, to prevent oxidative damage. In low light, carotenoid bound OCP appears orange (OCPo) and is inactive. Illumination by strong light converts OCP to the active, red (OCPR) state, which interacts with the PBS. A comparison of anisotropic THz microscopy measurements of dark adapted (OCPo) and illuminated OCP crystals indicate differences in their vibrational modes that may be important for OCP-PBS interactions.

Presenters and Authors Info

Presenter: Anonymous

Authors: McKinney, Jeffrey; Sharma, Akansha; Deng, Yanting; George, Deepu; Lechno-Yossef, Sigal; Kerfeld, Cheryl; Markelz, Andrea

Michigan State University, University at Buffalo