880107-52-8
Chemical Structure
Psalmotoxin 1
Synonym(s): PcTx1; Psalmopoeus cambridgei toxin-1
- CAS No.: 880107-52-8
- Formula:C200H312N62O57S6
- Molecular Weight:4689.39
SMILES: O=C([C@@H](N)CCC(O)=O)N[C@H](C(N[C@H](C(N[C@H](C(N1[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(NCC(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(NCC(N[C@H](C(N[C@H]2CSSC[C@H](NC3=O)C(N[C@H](C(N4[C@H](C(N[C@H](C(N[C@H](C(N5[C@H](C(N[C@H](C(N[C@H](C(O)=O)[C@@H](C)O)=O)CCCCN)=O)CCC5)=O)[C@@H](C)O)=O)CCCCN)=O)CCC4)=O)C(C)C)=O)=O)CC(O)=O)=O)=O)CC6=CNC=N6)=O)CCCNC(N)=N)=O)CC(N)=O)=O)C(C)C)=O)CSSC[C@H](NC7=O)C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H]3C(C)C)=O)CCC(O)=O)=O)CC8=CC=CC=C8)=O)CO)=O)CCCNC(N)=N)=O)CCCNC(N)=N)=O)CCCNC(N)=N)=O)CCCCN)=O)CC9=CNC%10=CC=CC=C9%10)=O)=O)=O)CCCCN)=O)CC%11=CNC%12=CC=CC=C%11%12)=O)CCCCN)=O)CCC1)=O)[C@H](CC)C)=O)CSSC[C@H](NC2=O)C(N[C@H](C(NCC(N[C@H](C(N[C@H]7CCC(O)=O)=O)CC(C)C)=O)=O)CCC(O)=O)=O)=O)CC(O)=O
Biological Activity: Psalmotoxin 1 (PcTx1) is a protein toxin that can bind at subunit-subunit interfaces of acid-sensing ion channel 1a (ASIC1a). Psalmotoxin 1 is a potent and slective ASIC1a inhibitor (IC50: 0.9 nM) by increasing the apparent affinity for H+ of ASIC1a. Psalmotoxin 1 can induce cell apoptosis, also inhibits cell migration, proferliration and invasion of cancer cells. Psalmotoxin 1 can be used in the research of cancers, or neurological disease[1][3][4][6].
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Psalmotoxin 1 | 99.20% | Psalmotoxin 1 (PcTx1) is a protein toxin that can bind at subunit-subunit interfaces of acid-sensing ion channel 1a (ASIC1a). Psalmotoxin 1 is a potent and slective ASIC1a inhibitor (IC50: 0.9 nM) by increasing the apparent affinity for H+ of ASIC1a. Psalmotoxin 1 can induce cell apoptosis, also inhibits cell migration, proferliration and invasion of cancer cells. Psalmotoxin 1 can be used in the research of cancers, or neurological disease. | ||||||||||||||||||||
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References
- [1]. Chen X, et al. The tarantula toxin psalmotoxin 1 inhibits acid-sensing ion channel (ASIC) 1a by increasing its apparent H+ affinity. J Gen Physiol. 2005 Jul;126(1):71-9. [Content Brief]
- [3]. Niko Joeres, et al. Functional and pharmacological characterization of two different ASIC1a/2a heteromers reveals their sensitivity to the spider toxin PcTx1. Sci Rep. 2016 Jun 9;6:27647. doi: 10.1038/srep27647. [Content Brief]
- [4]. Chao Yang, et al. Overexpression of acid-sensing ion channel 1a (ASIC1a) promotes breast cancer cell proliferation, migration and invasion. Transl Cancer Res. 2020 Dec;9(12):7519-7530. [Content Brief]
- [6]. P Escoubas, et al. Isolation of a tarantula toxin specific for a class of proton-gated Na+ channels. J Biol Chem. 2000 Aug 18;275(33):25116-21. [Content Brief]
