Molecular Basis for the Different Activation Kinetics of the Pacemaker Channels HCN2 and HCN4

View Full Paper

Ask AI

Bookmark

Population

HCN2 and HCN4 pacemaker channels (chimeras and mutants)

Comparison

Site-directed mutagenesis of transmembrane… vs Wild-type HCN2 and HCN4 channels

Design

Preclinical

Authors

Discussion

Findings remain preclinical; leaves open isoform-selective HCN modulation as a research target for pacemaker disorders.

Population

HCN2 and HCN4 pacemaker channels (chimeras and mutants)

Intervention

Site-directed mutagenesis of transmembrane segments S1, S2, and the S1-S2 linker

Comparator

Wild-type HCN2 and HCN4 channels

Outcome

Activation time constant (tau act)surrogate

Specific amino acid residues in the S1, S1-S2 linker, and S2 segments determine the distinct activation kinetics of HCN2 and HCN4 pacemaker channels.

Stieber et al. (2003) studied this question.

View Full Paper

Ask AI

Bookmark