Gap19 是一种衍生自 Cx43 细胞质环九个氨基酸的肽，是选择性连接蛋白 43 半通道阻滞剂。它可以防止 C 末端与 CL 的分子内相互作用，具有保护心肌作用。

Gap19 is a peptide that corresponds to a sequence on the cytoplasmic loop (CL) of Cx43.

Hemichannel inhibition is due to the binding of Gap19 to the C-terminus (CT) thereby preventing intramolecular CT-CL interactions.?The peptide inhibited Cx43 hemichannel unitary currents in both HeLa cells exogenously expressing Cx43 and acutely isolated pig ventricular cardiomyocytes.?Treatment with Gap19 prevented metabolic inhibition-enhanced hemichannel openings, protected cardiomyocytes against volume overload and cell death following ischemia/reperfusion in vitro and modestly decreased the infarct size after myocardial ischemia/reperfusion in mice in vivo[2].

1507930-57-5

C57H100N14O15

1221.51

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