2. Membrane Transporter/Ion Channel Neuronal Signaling
  3. nAChR
  4. α-Conotoxin AuIB

α-Conotoxin AuIB, a potent and selective α3β4 nicotinic acetylcholine receptor (nAChR) antagonist, blocks α3β4 nAChRs expressed in Xenopus oocytes with an IC50 of 0.75 μM.

For research use only. We do not sell to patients.

Custom Peptide Synthesis

α-Conotoxin AuIB Chemical Structure

α-Conotoxin AuIB Chemical Structure

CAS No. : 216299-21-7

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Other In-stock Forms of α-Conotoxin AuIB:

Other Forms of α-Conotoxin AuIB:

α-Conotoxin AuIB Related Antibodies

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1 Publications Citing Use of MCE α-Conotoxin AuIB

  • Biological Activity

  • Purity & Documentation

  • References

  • Customer Review

Description

α-Conotoxin AuIB, a potent and selective α3β4 nicotinic acetylcholine receptor (nAChR) antagonist, blocks α3β4 nAChRs expressed in Xenopus oocytes with an IC50 of 0.75 μM[1].

IC50 & Target

IC50: 0.75 μM (α3β4 nAChR; in Xenopus oocytes)[1]
In Vitro

α-Conotoxin AuIB blocks the α3β4 receptor with >100-fold higher potency than other receptor subunit combinations, including α2β2, α2β4, α3β2, α4β2, α4β4, and α1β1γδ[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

α-Conotoxin AuIB Related Antibodies
Molecular Weight

1572.76

Formula

C65H89N17O21S4
CAS No.
Sequence

Gly-Cys-Cys-Ser-Tyr-Pro-Pro-Cys-Phe-Ala-Thr-Asn-Pro-Asp-Cys-NH2 (Disulfide bridge:Cys2-Cys8;Cys3-Cys15)
Sequence Shortening

GCCSYPPCFATNPDC-NH2 (Disulfide bridge:Cys2-Cys8;Cys3-Cys15)
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

Please store the product under the recommended conditions in the Certificate of Analysis.
Solvent & Solubility
In Vitro: 

H2O

Peptide Solubility and Storage Guidelines:

1.  Calculate the length of the peptide.

2.  Calculate the overall charge of the entire peptide according to the following table:

  Contents Assign value
Acidic amino acid Asp (D), Glu (E), and the C-terminal -COOH. -1
Basic amino acid Arg (R), Lys (K), His (H), and the N-terminal -NH2 +1
Neutral amino acid Gly (G), Ala (A), Leu (L), Ile (I), Val (V), Cys (C), Met (M), Thr (T), Ser (S), Phe (F), Tyr (Y), Trp (W), Pro (P), Asn (N), Gln (Q) 0

3.  Recommended solution:

Overall charge of peptide Details
Negative (<0) 1.  Try to dissolve the peptide in water first.
2.  If water fails, add NH4OH (<50 μL).
3.  If the peptide still does not dissolve, add DMSO (50-100 μL) to solubilize the peptide.
Positive (>0) 1.  Try to dissolve the peptide in water first.
2.  If water fails, try dissolving the peptide in a 10%-30% acetic acid solution.
3.  If the peptide still does not dissolve, try dissolving the peptide in a small amount of DMSO.
Zero (=0) 1.  Try to dissolve the peptide in organic solvent (acetonitrile, methanol, etc.) first.
2.  For very hydrophobic peptides, try dissolving the peptide in a small amount of DMSO, and then dilute the solution with water to the desired concentration.
Purity & Documentation
References
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α-Conotoxin AuIB Related Classifications

  • Molarity Calculator

  • Dilution Calculator

The molarity calculator equation

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass   Concentration   Volume   Molecular Weight *
= × ×

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2
Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

α-Conotoxin AuIB216299-21-7nAChRNicotinic acetylcholine receptorsInhibitorinhibitorinhibit

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α-Conotoxin AuIB
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