New chemical tagging method could reveal plants' protein-making in real time
Liu X, Cao H, Tivendale ND, Millar AH
Plant Signaling
The next time your tomato plant wilts in a heat wave or your houseplant perks up after a watering, scientists may soon be able to watch exactly which proteins it builds in response, down to the hour.
Plants constantly build new proteins to grow, defend themselves, and react to their surroundings, but most tools only measure how much protein is already sitting in a cell, not how fast new protein is being made. This paper reviews a technique called BONCAT that uses a special marked amino acid to tag freshly made proteins so scientists can fish them out and study them separately from old ones. The authors argue this approach, already used in animals and microbes, could open new doors for understanding how plants handle stress, grow, keep circadian rhythms, and interact with microbes.
Key Findings
BONCAT uses bioorthogonal noncanonical amino acid tagging combined with click-chemistry to selectively detect, enrich, and characterize only the proteins a cell has synthesized recently
The method has been validated in cell-free systems, microbes, mammalian cells, and animals but has not yet been robustly established in plants
Potential plant applications highlighted include proteome regulation, stress response, development, circadian biology, and plant-microbe interaction studies
chevron_right Technical Summary
Scientists are adapting a labeling technique that tags newly made proteins as they're built, giving researchers a way to watch plants respond to stress, light, and microbes in real time rather than just seeing a snapshot of what's already there.
Abstract Preview
Original paper
Tracking newly synthesised proteins in plants.
Protein synthesis rate is distinct from steady-state protein abundance and must be measured independently to understand how cells regulate protein levels and respond to environments. Technologies u...
open_in_new Read full abstractAbstract copyright held by the original publisher.
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