Abstract:
:Efonidipine is a dual L-/T- type calcium channel blocker with a slow onset of action and a long lasting effect that exibihits antihypertensive and nephroprotective effects. differs from most other DHPs which can induce reflex tachycardia. Efonidipine reduces blood pressure without decreasing cardiac output and exerts organ-protective effects on the heart and kidney. In order to investigate how efonidipine block voltage-gated Ca2+ channel, we determined the crystal structure of CaVAb in complex with efonidipine at atomic resolution using x-ray crystallography. Our results reveal that efonidipine targets the central cavity of a model voltage-gated calcium channel underneath its selectivity filter and occlude the channel in an inactivated state. Binding of efonidipine does not break down the fourfold symmetry of the quaternary structure and its pore structure. Our work provides the structural basis for efonidipine block of a voltage-gated Ca2+ channel at the molecular level.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Xu F,Xiong W,Huang Y,Shen J,Zhou D,Tang Ldoi
10.1016/j.bbrc.2019.03.176subject
Has Abstractpub_date
2019-06-04 00:00:00pages
631-634issue
3eissn
0006-291Xissn
1090-2104pii
S0006-291X(19)30577-7journal_volume
513pub_type
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