Daptomycin peptide
For research use only. NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE.
Catalog Number: MPE0003993
Product Quantity: 5mg/20mg
Price: Varies
Availability: In Stock
Product Information
An FDA approved antibiotic. the sequence is a close mimic of the natural counterpart. The natural form is cyclic due to the ester bond between the hydroxyl of T4 and the carboxyl of kynurenine-13 (represented by Y here). The N-terminus is lipidated with n-decanoyl fatty acid chain. Other nonstandard amino acids include ornithine-6 (represented with K), (2S,3R)-3-methyl-glutamic acid-12 (represented with E), and three D-amino acids at positions N2, A8, and S11. Active against various Gram-positive bacteria such as S. aureus. This is another anionic peptide that is distinct from many of the cationic AMPs. Its activity requires the presence of Ca2+ (calcium) that causes the aggregation of the peptide. Resistance to this peptide antibiotic was observed one year after its introduction in 2003. Daptomycin was found in Streptomyces roseosporus NRRL11379.
| Product Name: | Daptomycin peptide |
| Sequence: | WNDTGKDADGSEY |
| Three letter code: | Trp-Asn-Asp-Thr-Gly-Lys-Asp-Ala-Asp-Gly-Ser-Glu-Tyr |
| Length (aa): | 13 |
| Peptide Purity (HPLC): | >95%; 98% and 99% purity available upon request |
| Quantity/Unit: | 1 Vial |
| * Optional Service: | TFA Removal Service is available upon request. |
Technical Information
| Source: | Synthetic |
| Storage Guidelines: | Store at -20°C for up to 1 year. should be refrigerated after reconstitution. For more details, please refer to the manual: Handling and Storage of Synthetic Peptides |
| Solubility: | Soluble in water |
| Appearance: | White to off-white powder |
| Shipping: | Peptides are shipped at ambient temperature by standard shipment process. |
| 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 |
Related Products / Services
Custom Peptide Synthesis: Daptomycin peptide peptide synthesis services include standard chemical peptide synthesis, peptide modification, peptide libraries, and recombinant peptide expression. Read more...
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