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  • LFB peptide

LFB peptide

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

Cat.#: 318776

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Optional Service: TFA RemovalWhat's this?

Special Price 277.2 USD

Availability: 4 weeks
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Product Information

  • Product Name
    LFB peptide
  • Documents
  • Quantity/Unit
    1 Vial
  • Sequence
    H-GLFSVVKGVLKGVGKNVSGSLLDQLKCKISGGC-OH
  • Three letter code
    H-Gly-Leu-Phe-Ser-Val-Val-Lys-Gly-Val-Leu-Lys-Gly-Val-Gly-Lys-Asn-Val-Ser-Gly-Ser-Leu-Leu-Asp-Gln-Leu-Lys-Cys-Lys-Ile-Ser-Gly-Gly-Cys-OH
  • Length (aa)
    33
  • Peptide Purity (HPLC)
    95.2
  • Molecular Formula
    C145H252N40O42S2
  • Molecular Weight
    3291.91
  • Source
    Synthetic
  • Additional Information
    LFB is a novel antimicrobial brevinin-like peptide from the skin secretion of the fujian large headed frog, Limnonectes fujianensi. LFB belongs to the Brevinin family and its structural conformation reflects the presence of three basic characteristic physico-chemical attributes: alpha-helix, beta-sheet and random coil. LFB displayed notable potency against the Gram positive bacterium S. aureus, the Gram negative bacterium E. coli and the yeast C. albicans. Furthermore, LFB could also inhibit the growth of human cancer cell lines, with IC50 values ranging from 18.9uM down to 2.0uM.
  • Storage Guidelines
    Ideally LFB peptide should be stored in a freezer at or below -9C. LFB peptide should be refrigerated after reconstitution. For more details, please refer to the manual:Handling and Storage of Synthetic Peptides
  • References
    • Li B, Lyu P, Xie S, et al. LFB: A Novel Antimicrobial Brevinin-Like Peptide from the Skin Secretion of the Fujian Large Headed Frog, Limnonectes fujianensi. Biomolecules. 2019;9(6)
  • About TFA salt

    Trifluoroacetic acid (TFA) is a strong acid, which is commonly used to cleave synthesized peptides from solid-phase resins and is also used to improve HPLC performance in the peptide purification step. By default, custom peptides are delivered as lyophilized TFA salts, and can contain as much as 10-45% TFA.

    TFA in custom peptides can cause inexplicable discrepancies in subsequent assay data. For instance, TFA in nM concentrations has been shown to interfere with cellular assays, inhibiting cellular proliferation in some instances, and increasing cell viability in others . It has also been found to be an unintended allosteric modulator of the glycine receptor, GlyR.

    TFA Removal Service is recommended for:

    • Peptides that will be used in cellular assays
    • Peptides that will be used as APIs or in manufactured products
    • For hydrophilic peptides containing numerous basic residues

Peptide Property

  • Analysed Sequence:H-GLFSVVKGVLKGVGKNVSGSLLDQLKCKISGGC-OH
  • Chemical Formula:C145H252N40O42S2
  • Sequence length:33
  • Extinction coefficient:0 M-1cm-1
  • GRAVY:0.49
  • Mw average:3291.91
  • Theoretical pI:10.06
  • 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"