Inward Rectification in ClC-0 Chloride Channels Caused by Mutations in Several Protein Regions
Population
Cloned ClC-type Cl- channels (specifically Torpedo electric organ Cl- channel, ClC-0)
Comparison
Mutations in ClC-0 vs Wild-type ClC-0 channel
Design
Preclinical
Authors
Discussion
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Implication
Challenges models requiring an intrinsic voltage sensor for ClC gating; leaves open physiological validation in mammalian muscle.
Structured PICO
P
Population
Cloned ClC-type Cl- channels (specifically Torpedo electric organ Cl- channel, ClC-0)
I
Intervention
Mutations in ClC-0 (D70G, D70E, K165R, H472K, S475T, E482D, T484S, T484Q)
C
Comparator
Wild-type ClC-0 channel
O
Outcome
Channel gating properties and voltage sensitivitysurrogate
Gating in ClC-0 and ClC-1 chloride channels shares similar mechanisms, and voltage sensitivity does not specifically rely on the negative charge at position 70, challenging the need for an intrinsic voltage sensor model.
Cite This Study
Ludewig et al. (1997) studied this question.