1. Cytoskeleton
  2. Gap Junction Protein

Gap Junction Protein

Gap junction (GJ) channels span the plasma membranes of adjacent cells and are formed by the docking of two hemichannels (connexons) oligomerized from connexin (Cx) proteins, which consist of 21 distinct isoforms. GJs provide a direct pathway for cell-to-cell electrical signaling and metabolic communication, allowing the passage of small ions, amino acids, metabolites, tetraethylammonium and signaling molecules such as cAMP, IP3, siRNA and small peptide.

Gap junction channels provide the basis for intercellular communication in the cardiovascular system for maintenance of the normal cardiac rhythm, regulation of vascular tone and endothelial function as well as metabolic interchange between the cells. In the heart, GJs mediate electrical coupling between cardiac myocytes, forming the cell-to-cell pathways for orderly spread of the wave of electrical excitation responsible for synchronous contraction. Gap junctions also play an important role in the control of bladder contractile response and in the regulation of various immune inflammatory processes.

Gap Junction Protein Related Products (23):

Cat. No. Product Name Effect Purity
  • HY-B1320
    Meclofenamic acid sodium Inhibitor 99.86%
    Meclofenamic acid (Meclofenamate) sodium is a non-steroidal anti-inflammatory agent (NSAID). Meclofenamic acid sodium is a non-selective gap-junction blocker and a highly selective inhibitor of fat - and obesity-related enzyme (FTO). Meclofenamic acid sodium has anti-inflammatory and antitumor activities[1][2][3].
  • HY-P0139
    Gap 27 Inhibitor 98.03%
    Gap 27, a synthetic connexin43 mimetic peptide, is a gap junction inhibitor. Gap 27 possesses conserved sequence homology to a portion of the second extracellular loop leading into the fourth transmembrane connexin segment[1][2].
  • HY-106268A
    Larazotide acetate Inhibitor
    Larazotide acetate is a peptide which is an orally active zonulin antagonist. Larazotide acetate shows antiviral activity to varicella-zoster virus (VZV) with EC50s of 44.14 and 59.06 μM for strain OKA and 07-1, respectively. Larazotide acetate can be used for the research of celiac disease and infection.
  • HY-B1367
    Carbenoxolone disodium Inhibitor 99.93%
    Carbenoxolone disodium is the active metabolite of Glycyrrhizic acid (HY-N0184) and the inhibitor of human 11β-HSD and bacterial 3α, 20β-HSD[1]. Carbenoxolone disodium is an uncoupling agent for gap junctions and a potent inhibitor of Vaccinia virus replication[2]. Carbenoxolone disodium is used for the study of peptic, esophageal and oral ulceration and inflammation. Carbenoxolone disodium inhibits Vaccinia virus replication.
  • HY-P1082
    Gap 26 Inhibitor 99.95%
    Gap 26 is a connexin mimetic peptide, composed of residue numbers 63-75 of the first extracellular loop of connexin 43 (gap junction blocker), containing the SHVR amino acid motif[1].
  • HY-P1136B
    TAT-Gap19 99.47%
    TAT-Gap19, a Cx mimetic peptide, is a specific connexin43 hemichannel (Cx43 HC) inhibitor. TAT-Gap19 does not inhibits the corresponding Cx43 GJCs. TAT-Gap19 traverses the blood-brain barrier and alleviate liver fibrosis in mice[1][2][3].
  • HY-114426
    AT-1002 Modulator
    AT-1002, a 6-mer synthetic peptide[1], is a tight junction regulator and absorption enhancer[2].
  • HY-P2275
    Peptide5 Inhibitor
    Peptide5, a connexin 43 mimetic peptide, reduce animals swelling, astrogliosis, and neuronal cell death after spinal cord injury[1]
  • HY-15204
    Tonabersat Modulator 98.36%
    Tonabersat (SB-220453) is a gap-junction modulator. Tonabersat prevents inflammatory damage in the central nervous system[1][2][3].
  • HY-P1136C
    TAT-Gap19 TFA 98.38%
    TAT-Gap19 TFA, a Cx mimetic peptide, is a specific connexin43 hemichannel (Cx43 HC) inhibitor. TAT-Gap19 TFA does not inhibits the corresponding Cx43 GJCs. TAT-Gap19 TFA traverses the blood-brain barrier and alleviate liver fibrosis in mice[1][2][3].
  • HY-P2275B
    Peptide5 TFA Inhibitor
    Peptide5 TFA, a connexin 43 mimetic peptide, reduces animals swelling, astrogliosis, and neuronal cell death after spinal cord injury. Peptide5 TFA also inhibits NLRP3 inflammasome, and is an anti-inflammatory agent[1][2][3].
  • HY-10913
    Danegaptide Modulator
    Danegaptide (GAP-134) is a potent, selective and orally active gap-junction modifier with an antiarrhythmic effect[1][2].
  • HY-117275
    Meclofenamic acid Inhibitor
    Meclofenamic acid (Meclofenamate) is a non-steroidal anti-inflammatory agent. Meclofenamic acid is a highly selective FTO (fat mass and obesity-associated) enzyme inhibitor. Meclofenamic acid competes with FTO binding for the m(6)A-containing nucleic acid. Meclofenamic acid is a non-selective gap-junction blocker. Meclofenamic acid inhibits hKv2.1 and hKv1.1, with IC50 values of 56.0 and 155.9 μM, respectively[1][2][3][4].
  • HY-P1136A
    Gap19 TFA Inhibitor 99.93%
    Gap19 TFA, a peptide derived from nine amino acids of the Cx43 cytoplasmic loop (CL), is a potent and selective connexin 43 (Cx43) hemichannel blocker. Gap19 TFA inhibits hemichannels caused by preventing intramolecular interactions of the C-terminus (CT) with the CL. Gap19 TFA is not blocking GJ channels or Cx40/pannexin-1 hemichannels. Gap19 TFA has protective effects against myocardial[1][2].
  • HY-P1136
    Gap19 Inhibitor
    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].
  • HY-106225
    Rotigaptide Activator 99.50%
    Rotigaptide (ZP123) is a novel and specific modulator of connexin 43 (Cx43). Rotigaptide prevents the uncoupling of Cx43-mediated gap junction communication and normalizes cell-to-cell communication during acute metabolic stress. Rotigaptide is a potent antiarrhythmic peptide (AAP) with improved stability and has the potential for the investigation of cardiac arrhythmias-specifically atrial fibrillation[1][2].
  • HY-10913A
    Danegaptide Hydrochloride Modulator 99.47%
    Danegaptide Hydrochloride (GAP-134 Hydrochloride) is a potent, selective and orally active gap-junction modifier with an antiarrhythmic effect[1][2].
  • HY-117275S
    Meclofenamic acid-d4 Inhibitor
    Meclofenamic acid-d4 is the deuterium labeled Meclofenamic acid. Meclofenamic Acid (Meclofenamate), a non-steroidal, anti-inflammatory agent, is a highly selective fat mass and obesity-associated (FTO) enzyme inhibitor. Meclofenamic Acid competes with FTO binding for the m(6)A-containing nucleic acid. Meclofenamic acid is a non-selective gap-junction blocker[1][2][3].
  • HY-106268
    Larazotide Inhibitor
    Larazotideis a peptide which is an orally active zonulin antagonist. Larazotide shows antiviral activity to varicella-zoster virus (VZV) with EC50s of 44.14 and 59.06 μM for strain OKA and 07-1, respectively. Larazotide can be used for the research of celiac disease and infection[1][2].
  • HY-P1082A
    Gap 26 TFA Inhibitor 99.72%
    Gap 26 TFA is a connexin mimetic peptide, composed of residue numbers 63-75 of the first extracellular loop of connexin 43 (gap junction blocker), containing the SHVR amino acid motif[1].