Tertiapin Q
Blocker of Kir Channels
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產(chǎn)品名稱: Tertiapin Q
Blocker of Kir Channels
產(chǎn)品型號: 08TER001-00100
產(chǎn)品展商: 其他品牌
產(chǎn)品文檔: 無相關(guān)文檔
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Tertiapin Q
Blocker of Kir Channels
的詳細(xì)介紹
Tertiapin Q
Blocker of Kir Channels
Tertiapin has been isolated from the venom of the Honeybee Apis mellifera. Tertiapin-Q is an oxidation-resistant mutant of the wild-type tertiapin where Methionine 13 has been replaced by a Glutamine. Tertiapin-Q blocks the inwardly rectifying Kir1.1 (ROMK1) and Kir3.1/3.4 (GIRK1/GIRK4 also known as IKACh) potassium channels with Kd values of around 2 nM and 8 nM respectively.Tertiapin-Q also inhibits calcium-activated large conductance BK potassium channels (KCa1.1) in a concentration and voltage-dependent manner (IC50 ~ 5 nM), in addition to inhibiting Kir3.1/3.2 (GIRK1/GIRK2) heteromultimer potassium channels with a Kd close to 270 nM. Tertiapin-Q can prevent dose-dependent acetylcholine(ACh)-induced atrioventricular blocks in mammalian hearts, as KCNJ3/KCNJ5 channels (also named I(KACh)), are activated by ACh found in mammalian myocytes.
