ATTO488-ProTx-I(Protoxin1;β-theraphotoxin-Tp1a) isafluorescentlylabeledProTx-IthatwasoriginallyisolatedfromthevenomofThrixopelmapruriens(Peruviangreenvelvettarantula).ThistoxinreversIBLyinhibitsthetetrodotoxin(TTX)-resistantchannel Nav1.8(IC50 =27nM)and Nav1.2,Nav1.5andNav1.7 withIC50 valuesbetween50and100nM.FurThermore, ProTx-I shiftsthevoltagedependenceactivityof T-typeCav3.1channels (IC50=50nM)withoutaffectingthevoltagedependenceofinactivation. ProTx-I isavaluabletooltodiscriminatebetweenCav3.1andCav3.2.ProTx-IisalsoanantagoNISTofTRAP1.
Description:
AAsequence:Glu-Cys2-Arg-Tyr-Trp-Leu-Gly-Gly-Cys9-Ser-Ala-Gly-Gln-Thr-Cys15-Cys16-Lys-His-Leu-Val-Cys21-Ser-Arg-Arg-His-Gly-Trp-Cys28-Val-Trp-Asp-Gly-Thr-Phe-Ser-OH
Disulfidebridges:Cys2-Cys16,Cys9-Cys21,Cys15-Cys28
Length(aa):35
FormulaofProTx-I:C171H245N53O47S6
MolecularWeightofProTx-I:3987.50Da
CASnumber:Notavailable
Source:Synthetic
Purityrate:>95%
ATTO488:λex500nm,λem520nm
