Gap19

Gap19, a peptide derived from nine amino acids of the Cx43 cytoplasmic loop (CL), is a potent and selective connexin 43 (Cx43) hemichannel blocker. Gap19 inhibits hemichannels caused by preventing intramolecular interactions of the C-terminus (CT) with the CL. Gap19 is not blocking GJ channels or Cx40/pannexin-1 hemichannels. Gap19 has protective effects against myocardial[1][2].

Product Specifications

CAS Number

[1507930-57-5]

UNSPSC

12352209

Target

Connexin; Gap Junction Protein

Type

Peptides

Related Pathways

Cytoskeleton

Applications

Neuroscience-Neuromodulation

Field of Research

Cardiovascular Disease

Assay Protocol

https://www.medchemexpress.com/gap19.html

Purity

99.25

Solubility

H2O : ≥ 100 mg/mL

Smiles

NCCCC[C@H](N)C(N[C@@H](CCC(N)=O)C(N[C@@H]([C@@H](C)CC)C(N[C@@H](CCC(O)=O)C(N[C@@H]([C@@H](C)CC)C(N[C@@H](CCCCN)C(N[C@@H](CCCCN)C(N[C@H](C(N[C@H](C(O)=O)CCCCN)=O)CC1=CC=CC=C1)=O)=O)=O)=O)=O)=O)=O

Molecular Formula

C55H96N14O13

Molecular Weight

1161.44

References & Citations

[1]Boengler K, et al. Connexin 43 impacts on mitochondrial potassium uptake. Front Pharmacol. 2013 Jun 6;4:73.|[2]Wang N, et al. Selective inhibition of Cx43 hemichannels by Gap19 and its impact on myocardial ischemia/reperfusion injury. Basic Res Cardiol. 2013 Jan;108 (1) :309.

Shipping Conditions

Blue Ice

Storage Conditions

-80°C, 2 years; -20°C, 1 year (Powder, sealed storage, away from moisture)

Scientific Category

Peptides

Clinical Information

No Development Reported

Citation 01

Br J Pharmacol. 2025 Jun 9.|Brain Res. 2023 Dec 15:1821:148619.|Oral Dis. 2024 Jul;30 (5) :3239-3249.|Cell Stress Chaperones. 2024 Jun;29 (3) :440-455.|Research Square Print. 2022 Aug.