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  • Ac-IEAR-pNA peptide

Ac-IEAR-pNA peptide

Not For Human Use, Lab Use Only.

Cat.#: 319373

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* Buy 1 get 1 free (?) What is TFA?

Special Price 199.00 USD

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Product Information

  • Product Name
    Ac-IEAR-pNA peptide
  • Documents

    Batch to batch variation of the purity

  • Sequence Shortening
    Ac-IEAR-pNA
  • Sequence
    Ac-Ile-Glu-Ala-Arg-pNA
  • Length (aa)
    4
  • Peptide Purity (HPLC)
    95.08%
  • Molecular Formula
    C28H43N9O9
  • Molecular Weight
    649.69
  • Source
    Synthetic
  • Form
    Powder
  • Description
    Ac-IEAR-pNA is a cholinesterase inhibitor that is used in the laboratory to measure the activity of butyrylcholinesterase. The enzyme hydrolyzes acetylcholine into butyrylcholine and acetic acid. Ac-IEAR-pNA is a yellow solid with a melting point of about 60°C and an average molecular weight of 288 Da. The enzyme has a Km value of 1.1 mM potassium phosphate, and its catalytic activity increases with increasing concentrations of potassium phosphate, reaching a maximum at 3 mM phosphates. Ac-IEAR-pNA has been shown to be effective in catalytic hydrolysis reactions, which may be due to its ability to bind to the active site of butyrylcholinesterase.
  • Storage Guidelines
    Normally, this peptide will be delivered in lyophilized form and should be stored in a freezer at or below -20 °C. For more details, please refer to the manual: Handling and Storage of Synthetic Peptides
  • References
    • Brawner A, Hinrichs SH, Larson MA, Lockridge O. Heat pretreatment eliminates spurious butyrylcholinesterase enhancement of endotoxin levels in the kinetic chromogenic assay. Chem Biol Interact. 2016 Apr 5;249:19-22. doi: 10.1016/j.cbi.2016.02.015. Epub 2016 Feb 23. PMID: 26915974.
  • About TFA salt

    Trifluoroacetic acid (TFA) is a common counterion from the purification process using High-Performance Liquid Chromatography (HPLC). The presence of TFA can affect the peptide's net weight, appearance, and solubility.

    Impact on Net Weight: The TFA salt contributes to the total mass of the product. In most cases, the peptide content constitutes >80% of the total weight, with TFA accounting for the remainder.

    Solubility: TFA salts generally enhance the solubility of peptides in aqueous solutions.

    In Biological Assays: For most standard in vitro assays, the residual TFA levels do not cause interference. However, for highly sensitive cellular or biochemical studies, please be aware of its presence.

  • Molar Concentration Calculator

  • Dilution Calculator

  • Percent Concentration Calculator

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

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• Peptide Services: NovoPro's peptide synthesis services include standard chemical peptide synthesis, peptide modification, peptide libraries, and recombinant peptide expression.

• Standard Peptide Synthesis: NovoPro offers quality peptides at the most competitive prices in the industry, starting at $3.20 per amino acid. NovoPro provides PepBox – Automatic Quote Tool for online price calculation.

• Peptide Modifications: NovoPro offers a wide range of peptide modification services including isotope labeling (2H, 15N, and 13C), multiple disulfide bonds, multiple phosphorylations, KLH, BSA, ovalbumin, amidation, acetylation, biotin, FITC, etc.

Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"