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  • Small toxic polypeptide LdrB/LdrOB/LdrOC

Small toxic polypeptide LdrB/LdrOB/LdrOC

Not For Human Use, Lab Use Only.

Cat.#: 300423

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

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Availability: 4 weeks
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Product Information

  • Product Name
    Small toxic polypeptide LdrB/LdrOB/LdrOC
  • Documents

    Batch to batch variation of the purity

  • Sequence Shortening
    H-MTLAQFAMTFWHDLAAPILAGIITAAIVGWWRNRK-OH
  • Sequence
    H-Met-Thr-Leu-Ala-Gln-Phe-Ala-Met-Thr-Phe-Trp-His-Asp-Leu-Ala-Ala-Pro-Ile-Leu-Ala-Gly-Ile-Ile-Thr-Ala-Ala-Ile-Val-Gly-Trp-Trp-Arg-Asn-Arg-Lys-OH
  • Length (aa)
    35
  • Peptide Purity (HPLC)
    95.9%
  • Molecular Formula
    C187H285N49O43S2
  • Molecular Weight
    3971.68
  • Source
    Synthetic
  • Form
    Powder
  • Description
    Small toxic polypeptide LdrB/LdrOB/LdrOC is highly homologous to ldrD and has the same activity as it. LdrB sources from E. coli K-12, while LdrOB and LdrOC source from E. coli O157:H7. Though the organisms are different, they share the same sequence. In this peptide, there is a putative trans-membrane a-helical domain predicted by a computer program (SOSUI: http://sosui.proteome.bio.tuat.ac.jp/sosuiframe0E.html) sequenced WHDLAAPILAGIITAAIVGWWR.
  • 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
    • Kawano M, Oshima T, Kasai H, Mori H. Molecular characterization of long direct repeat (LDR) sequences expressing a stable mRNA encoding for a 35-amino-acid cell-killing peptide and a cis-encoded small antisense RNA in Escherichia coli. Mol Microbiol. 2002;45(2):333-49.
  • 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"