Apamin TFA

Apamin TFA (Apamine TFA) is an 18 amino acid peptide neurotoxin found in apitoxin (bee venom), is known as a specifically selective blocker of Ca2+-activated K+ (SK) channels and exhibits anti-inflammatory and anti-fibrotic activity.

Product information

Molecular Weight: 2141.36

Formula: C81H132F3N31O26S4

Chemical Name: 3-[(1R, 4S, 7S, 13S, 16S, 19S, 22S, 25S, 28R, 31S, 34S, 37S, 40R, 47S, 50R)-50-amino-40-[[(2S)-5-amino-1-[[(2S)-5-amino-1-[[(2S)-1-amino-3-(1H-imidazol-4-yl)-1-oxopropan-2-yl]amino]-1, 5-dioxopentan-2-yl]amino]-1, 5-dioxopentan-2-yl]carbamoyl]-4-(4-aminobutyl)-47-(2-amino-2-oxoethyl)-34, 37-bis(3-carbamimidamidopropyl)-19-[(1R)-1-hydroxyethyl]-7, 22, 31-trimethyl-25-(2-methylpropyl)-2, 5, 8, 14, 17, 20, 23, 26, 29, 32, 35, 38, 46, 49-tetradecaoxo-42, 43, 52, 53-tetrathia-3, 6, 9, 15, 18, 21, 24, 27, 30, 33, 36, 39, 45, 48-tetradecazatricyclo[26.16.10.09, 13]tetrapentacontan-16-yl]propanoic acid;2, 2, 2-trifluoroacetic acid

Smiles: CC(C)C[C@@H]1NC(=O)[C@H](C)NC(=O)[C@@H](NC(=O)[C@H](CCC(O)=O)NC(=O)[C@@H]2CCCN2C(=O)[C@H](C)NC(=O)[C@H](CCCCN)NC(=O)[C@@H]2CSSC[C@H](NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@H](C)NC(=O)[C@H](CSSC[C@H](N)C(=O)N[C@@H](CC(N)=O)C(=O)N2)NC1=O)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CC1=CNC=N1)C(N)=O)[C@@H](C)O.OC(=O)C(F)(F)F

InChiKey: GUBJIBRYPCCYMV-RRDNKSJASA-N

InChi: InChI=1S/C79H131N31O24S4.C2HF3O2/c1-35(2)26-49-70(127)107-51-31-136-135-30-41(81)63(120)105-50(28-57(84)114)71(128)108-53(73(130)99-42(12-7-8-22-80)64(121)96-38(5)77(134)110-25-11-15-54(110)75(132)102-47(18-21-58(115)116)69(126)109-59(39(6)111)76(133)95-37(4)62(119)104-49)33-138-137-32-52(106-66(123)44(14-10-24-92-79(88)89)98-65(122)43(13-9-23-91-78(86)87)97-61(118)36(3)94-72(51)129)74(131)101-45(16-19-55(82)112)67(124)100-46(17-20-56(83)113)68(125)103-48(60(85)117)27-40-29-90-34-93-40;3-2(4,5)1(6)7/h29,34-39,41-54,59,111H,7-28,30-33,80-81H2,1-6H3,(H2,82,112)(H2,83,113)(H2,84,114)(H2,85,117)(H,90,93)(H,94,129)(H,95,133)(H,96,121)(H,97,118)(H,98,122)(H,99,130)(H,100,124)(H,101,131)(H,102,132)(H,103,125)(H,104,119)(H,105,120)(H,106,123)(H,107,127)(H,108,128)(H,109,126)(H,115,116)(H4,86,87,91)(H4,88,89,92);(H,6,7)/t36-,37-,38-,39+,41-,42-,43-,44-,45-,46-,47-,48-,49-,50-,51-,52-,53-,54-,59-;/m0./s1

Technical Data

Appearance: Solid Power

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

Solubility: H2O : 50 mg/mL (23.35 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:

Apamin (0.5-2 µg/mL; 24 hours; HSC-T6 cells) treatment markedly reduces the expression of α-SMA in the TGF-β1-induced HSC-T6 cells. Apamin treatment abrogats the activation of p-Smad2/3 and Smad4 induced by TGF-β1.

In Vivo:

Apamin (0.1 mg/kg; intraperitoneal injection; twice a week; for 4 weeks; C57BL/6 male mice) treatment results in decreased liver injury and proinflammatory cytokine levels. Apamin suppresses the deposition of collagen, proliferation of BECs and expression of fibrogenic genes in the 3,5-diethoxycarbonyl-1,4-dihydrocollidine (DDC)-fed mice.

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