• Temporin-GHa (GHa) peptide

Temporin-GHa (GHa) peptide

Not For Human Use, Lab Use Only.

Cat.#: 318833

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Product Information

  • Product Name
    Temporin-GHa (GHa) peptide
  • Documents
  • Sequence Shortening
    H-FLQHIIGALGHLF-OH
  • Sequence
    H-Phe-Leu-Gln-His-Ile-Ile-Gly-Ala-Leu-Gly-His-Leu-Phe-OH
  • Length (aa)
    13
  • Peptide Purity (HPLC)
    95.2%
  • Molecular Formula
    C72H108N18O15
  • Molecular Weight
    1465.73
  • Source
    Synthetic
  • Form
    Powder
  • Description
    The abuse of antibiotics has led to the emergence of multidrug-resistant bacteria, which is becoming a serious worldwide problem people have to face. In our previous study, temporin-GHa (GHa) cloned from Hylarana guentheri showed antimicrobial activity against Gram-positive bacteria. In order to improve its therapeutic potential, we used a template-based and a database-assisted design to obtain three derived peptides by replacing the histidine at both ends of GHa with lysine, which exhibited faster and stronger bactericidal activity and a broader spectrum than the parent peptide. GHaK and GHa4K targeted to the bacterial membrane to exert their antibacterial activities at a faster membrane damage rate. The derived peptides inhibited the initial adhesion and the formation of Staphylococcus aureus biofilms, and eradicated the mature biofilms, which indicated that the derived peptides effectively penetrated the biofilm and killed bacteria. The therapeutic index (TI) and cell selectivity index (CSI) of the derived peptides increased significantly, which means a broader therapeutic window of the derived peptides. The derived peptides with improved activity and cell selectivity have the potential to be the promising candidates for the treatment of S. aureus infections. Our research also provides new insights into the design and development of antimicrobial peptides.
  • 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
    • Xie Z, Wei H, Meng J, et al. The Analogs of Temporin-GHa Exhibit a Broader Spectrum of Antimicrobial Activity and a Stronger Antibiofilm Potential against Staphylococcus aureus. Molecules. 2019;24(22):4173. Published 2019 Nov 18. doi:10.3390/molecules24224173
  • 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

  • Molar Concentration Calculator

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

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Peptide Property

  • Analysed Sequence:H-FLQHIIGALGHLF-OH
  • Chemical Formula:C72H108N18O15
  • Sequence length:13
  • Extinction coefficient:0 M-1cm-1
  • GRAVY:1.32
  • Mw average:1465.73
  • Theoretical pI:8.09
  • 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"