ArticleBiophysical reports2022
A trafficking motif alters GEVI activity implicating persistent protein interactions at the membrane.
Article in Biophysical reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 5 citations in OpenAlex.
- Beyond Membrane Potential: Exploiting Signal Complexity in Genetically Encoded Voltage Indicators.Sensors (Basel, Switzerland) · 2026Article
- Noise Sources and Strategies for Signal Quality Improvement in Biological Imaging: A Review Focused on Calcium and Cell Membrane Voltage Imaging.Biosensors · 2026Review
- From Plankton to Primates: How VSP Sequence Diversity Shapes Voltage Sensing.International journal of molecular sciences · 2025Article
- Stretch-induced endogenous electric fields drive directed collective cell migration in vivo.Nature materials · 2025Article
- Exploring the potential of water channels for developing genetically encoded reporters and biosensors for diffusion-weighted MRI.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2024Article
- Exploring the potential of water channels for developing MRI reporters and sensors without the need for exogenous contrast agents.bioRxiv : the preprint server for biology · 2024Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
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Abstract
Efficient plasma-membrane expression is critical for genetically encoded voltage indicators (GEVIs). To improve the plasma-membrane expression, we introduced multiple combinations of plasma-membrane trafficking motifs at different positions to members of the Bongwoori family of GEVIs. An improvement from 20% to 27% in the ΔF/F/100 mV depolarization of the plasma membrane was observed when a Golgi transport motif was inserted near the N-terminus in conjunction with an endoplasmic reticulum release motif near the C-terminus of the protein. Unfortunately, this variant was also slower. The weighted tau on of the variant (25 ms) was more than double the original construct (11 ms). The weighted tau off was >20 ms compared with 10 ms for the original GEVI. The voltage range of the GEVI was also shifted to more negative potentials. Insertion of spacer amino acids between the fluorescent-protein domain and the endoplasmic reticulum release motif at the C-terminus rescued the speed of both the tau on and tau off while restoring the voltage range and maintaining the improved voltage-dependent optical signal. These results suggest that while trafficking motifs do improve plasma-membrane expression, they may also mediate persistent associations that affect the functioning of the protein.
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Registered trials
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