Key result
KCNE4 regulates the Kv1.3 channel by physically interacting via its COOH-terminus and shaping inactivation properties through its transmembrane domain to fine-tune leukocyte responses.
This study defines the molecular interactions between Kv1.3 channels and KCNE4 regulatory subunits, highlighting how the transmembrane domain fine-tunes physiological responses in leukocytes.
Hypothesis-generating for leukocyte modulation; leaves open cardiovascular translation.
This work defines, for the first time, the interactions between a Kv1 ( Shaker) channel and a KCNE regulatory subunit. While the COOH-terminus of KCNE4 physically interacts with the channel, its transmembrane domain shapes the inactivation properties of the functional complex, fine-tuning the Kv1.3-dependent physiological response in leukocytes.
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Sastre et al. (2024) studied this question. KCNE4 regulates the Kv1.3 channel by physically interacting via its COOH-terminus and shaping inactivation properties through its transmembrane domain to fine-tune leukocyte responses.
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