User profiles for Rebecka J. Sepela

Rebecka Sepela

Postdoctoral Fellow, Harvard University
Verified email at fas.harvard.edu
Cited by 61

EVAP: A two-photon imaging tool to study conformational changes in endogenous Kv2 channels in live tissues

P Thapa, R Stewart, RJ Sepela, O Vivas… - Journal of General …, 2021 - rupress.org
A primary goal of molecular physiology is to understand how conformational changes of
proteins affect the function of cells, tissues, and organisms. Here, we describe an imaging …

Distinguishing potassium channel resting state conformations in live cells with environment-sensitive fluorescence

S Fletcher-Taylor, P Thapa, RJ Sepela… - ACS chemical …, 2020 - ACS Publications
Ion channels are polymorphic membrane proteins whose high-resolution structures offer
images of individual conformations, giving us starting points for identifying the complex and …

[PDF][PDF] The AMIGO1 adhesion protein activates Kv2. 1 voltage sensors

RJ Sepela, RG Stewart, LA Valencia, P Thapa… - Biophysical …, 2022 - cell.com
Kv2 voltage-gated potassium channels are modulated by amphoterin-induced gene and
open reading frame (AMIGO) neuronal adhesion proteins. Here, we identify steps in the …

Taming unruly chloride channel inhibitors with rational design

RJ Sepela, JT Sack - … of the National Academy of Sciences, 2018 - National Acad Sciences
A selective inhibitor is a drug that inhibits the function of one type of protein more than others.
This precise block of function can reveal the physiological role of the targeted endogenous …

Optical measurement of voltage sensing by endogenous ion channels

P Thapa, R Stewart, RJ Sepela, O Vivas, LK Parajuli… - BioRxiv, 2019 - biorxiv.org
A primary goal of molecular physiology is to understand the coupling between protein
conformational change and systemic function. To see the conformational changes of a voltage-…

The AMIGO1 adhesion protein modulates movement of Kv2. 1 voltage sensors

RJ Sepela, RG Stewart, LA Valencia, P Thapa, Z Wang… - bioRxiv, 2021 - biorxiv.org
Kv2 voltage-gated potassium channels are modulated by AMIGO neuronal adhesion proteins.
Here, we identify steps in the conductance activation pathway of Kv2.1 channels that are …

[PDF][PDF] Distinguishing Potassium Channel Resting State Conformations in Live Cells with

…, P Thapa, RJ Sepela - … neuroscience, 11 (15), 2020 - scholar.archive.org
Ion channels are polymorphic membrane proteins whose high-resolution structures offer
images of individual conformations, giving us starting points for identifying the complex and …

[PDF][PDF] Decoupling between Voltage Sensor Movement and Pore Opening of Kv2. 1 Channels

MJ Marquis, RJ Sepela, JT Sack - Biophysical Journal, 2019 - cell.com
The relationship between membrane potential and the conductance of Kv2-type voltage gated
K+ channels is modulated by cells. To begin studies into the mechanistic underpinnings …

[PDF][PDF] Observation of Multiple Potassium Channel Closed State Structures by Voltage Clamp Spectroscopy

P Thapa, S Fletcher-Taylor, RJ Sepela… - Biophysical …, 2020 - cell.com
A primary goal of molecular physiology is to understand how proteins change their conformation.
Here, we describe a spectral imaging method for measuring conformational changes of …

[PDF][PDF] An imaging method to measure conformational changes of voltage sensors of endogenous ion channels in tissue

P Thapa, R Stewart, RJ Sepela, O Vivas, LK Parajuli… - researchgate.net
A primary goal of molecular physiology is to understand the coupling between protein
conformational change and systemic function. To see the conformational changes of a …