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  • XPF peptide

XPF peptide

Not For Human Use, Lab Use Only.

Cat.#: 309660

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

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Availability: 3 weeks
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Product Information

  • Product Name
    XPF peptide
  • Documents

    Batch to batch variation of the purity

  • Sequence Shortening
    GWASKIGQTLGKIAKVGLKELIQPK
  • Sequence
    H-Gly-Trp-Ala-Ser-Lys-Ile-Gly-Gln-Thr-Leu-Gly-Lys-Ile-Ala-Lys-Val-Gly-Leu-Lys-Glu-Leu-Ile-Gln-Pro-Lys-OH
  • Length (aa)
    25
  • Peptide Purity (HPLC)
    96.9%
  • Molecular Formula
    C123H211N33O32
  • Molecular Weight
    2664.2
  • Source
    Synthetic
  • Form
    Powder
  • Description
    The peptide was initially discovered by Gibson BW, Poulter L, Williams DH, Maggio JE. in 1986 Novel peptide fragments originating from PGLa and the caerulein and xenopsin precursors from Xenopus laevis. J Biol Chem. 1986 Apr 25;261(12):5341-9. Its antimicrobial activity was demonstrated in 1988 (see the ref). Active against protozoa P. caudatum, A. castellani and T. pyriformis, bacteria E. coli ATCC 25922, S. pyogenes, and P. aeruginosa. UPDATED 03/2012; 5/2013. XPF has Antibacterial, Antifungal activity. XPF was found in Skin; Stomach, African clawed frog, Xenopus laevis, Africa.
  • 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
    • Soravia E, Martini G, Zasloff M. Antimicrobial properties of peptides from Xenopus granular gland secretions. FEBS Lett. 1988;228(2):337-40.
  • 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)

Mass
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Concentration
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Volume
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Molecular Weight

Peptide Property

  • Analysed Sequence:H-GWASKIGQTLGKIAKVGLKELIQPK-OH
  • Chemical Formula:C123H211N33O32
  • Sequence length:25
  • Extinction coefficient:5690 M-1cm-1
  • GRAVY:-0.12
  • Mw average:2664.18
  • Theoretical pI:10.71
  • Data Source:Peptide Property Calculator

GRAVY = grand average of hydropathy

X: Hydrophobic uncharged residues, like F I L M V W A and P

X: Basic residues, like R K H

X: Acidic residues, like D E

X: Polar uncharged residues, like G S T C N Q and Y

• 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"