Light traffic: photo-crosslinking a novel transport system
Related Experiment Video
Updated: Aug 24, 2026

Simultaneous Visualization of the Dynamics of Crosslinked and Single Microtubules In Vitro by TIRF Microscopy
Published on: February 18, 2022
Tracy Palmer1, Frank Sargent, Ben C Berks
1Department of Molecular Microbiology, John Innes Centre, Norwich, UK. tracy.palmer@bbsrc.ac.uk
Abstract:
The Tat protein transporter is found in the membranes of many bacteria and in plant chloroplasts. This highly unusual transport machine moves folded and often oligomeric substrate proteins across energy-conserving membranes. A recent paper reports the first use of a photo-crosslinking approach to dissect the early recognition events between the transporter and its substrate.
More Related Videos
Related Concept Videos
Electron Transport Chains
The ETC is comprised of...
Short-distance Transport of Resources
Protein Transport to the Thylakoids
Secondary Active Transport
Photosystem I
Both these photosystems work in concert. An excited electron from PSII is relayed to PSI via an electron transport chain in the thylakoid membrane of the chloroplast, which is comprised of the carrier molecule plastoquinone, the dual-protein cytochrome complex, and plastocyanin. As electrons move between PSII and PSI, they lose energy and must be re-energized...
Xylem and Transpiration-driven Transport of Resources

