Gap 26

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.

Product information

CAS Number: 197250-15-0

Molecular Weight: 1550.78

Formula: C70H107N19O19S

Chemical Name: (2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-[(2S,3S)-2-{[(2S)-1-[(2S)-2-[(2S)-2-[(2S)-6-amino-2-[(2S)-2-[(2S)-2-[(2R)-2-[(2S)-2-amino-3-methylbutanamido]-3-sulfanylpropanamido]-3-(4-hydroxyphenyl)propanamido]-3-carboxypropanamido]hexanamido]-3-hydroxypropanamido]-3-phenylpropanoyl]pyrrolidin-2-yl]formamido}-3-methylpentanamido]-3-hydroxypropanamido]-3-(1H-imidazol-5-yl)propanamido]-3-methylbutanamido]-5-[(diaminomethylidene)amino]pentanoic acid

Smiles: C[C@@H](CC)[C@H](NC(=O)[C@@H]1CCCN1C(=O)[C@H](CC1C=CC=CC=1)NC(=O)[C@H](CO)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CC(O)=O)NC(=O)[C@H](CC1C=CC(O)=CC=1)NC(=O)[C@H](CS)NC(=O)[C@@H](N)C(C)C)C(=O)N[C@@H](CO)C(=O)N[C@@H](CC1=CN=CN1)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CCCN=C(N)N)C(O)=O

InChiKey: FDPIMWZHGJNESB-VCSXYVMHSA-N

InChi: InChI=1S/C70H107N19O19S/c1-7-38(6)56(67(105)85-50(33-91)61(99)81-46(29-41-31-75-35-77-41)60(98)87-55(37(4)5)66(104)79-44(69(107)108)18-13-25-76-70(73)74)88-64(102)52-19-14-26-89(52)68(106)48(28-39-15-9-8-10-16-39)83-62(100)49(32-90)84-57(95)43(17-11-12-24-71)78-59(97)47(30-53(93)94)82-58(96)45(27-40-20-22-42(92)23-21-40)80-63(101)51(34-109)86-65(103)54(72)36(2)3/h8-10,15-16,20-23,31,35-38,43-52,54-56,90-92,109H,7,11-14,17-19,24-30,32-34,71-72H2,1-6H3,(H,75,77)(H,78,97)(H,79,104)(H,80,101)(H,81,99)(H,82,96)(H,83,100)(H,84,95)(H,85,105)(H,86,103)(H,87,98)(H,88,102)(H,93,94)(H,107,108)(H4,73,74,76)/t38-,43-,44-,45-,46-,47-,48-,49-,50-,51-,52-,54-,55-,56-/m0/s1

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Solubility: H2O : 50 mg/mL (32.24 mM; Need ultrasonic).

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 ^oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 ^oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

How to use

In Vitro:

Gap 26 (0.25 mg/mL, 30 min) reduces the wave size in the three cell lines (RBE4, SV-ARBEC and ECV304). Gap 26 (0.25 mg/mL, 30 min) completely abolishes the InsP3-triggered ATP response and reduced the ATP release to below the control level, indicating that the basal ATP release is also affected. Gap 26 does indeed significantly inhibit our InsP3-triggered intercellular calcium waves, but it did not have any effect on dye coupling through junctional channels as evidenced by the FRAP experiments, despite the fact that connexin 43 was present in the cell lines used. Gap 26 (100-300 μM) dose-dependently reduces the rhythmic responses of rabbit superior mesenteric arteries, with IC50 of 28.4 ± 3.4 μM.

Products are for research use only. Not for human use.