Osteocalcin (1-49) (human) peptide

Osteocalcin (1-49) (human) peptide

• Handling and Storage of Synthetic Peptides
• Material Safety Data Sheets (MSDS)

1 Vial

YLYQWLGAPVPYPDPL-Gla-PRR-Gla-VC-Gla-LNPDCDELADHIGFQEAYRRFYGPV (Gla=γ-Carboxyglutamic Acid; Disulfide bridge: 23-29)

H-Tyr-Leu-Tyr-Gln-Trp-Leu-Gly-Ala-Pro-Val-Pro-Tyr-Pro-Asp-Pro-Leu-Gla-Pro-Arg-Arg-Gla-Val-Cys-Gla-Leu-Asn-Pro-Asp-Cys-Asp-Glu-Leu-Ala-Asp-His-Ile-Gly-Phe-Gln-Glu-Ala-Tyr-Arg-Arg-Phe-Tyr-Gly-Pro-Val-OH(Gla=γ-Carboxyglutamic Acid; Disulfide bridge:23-29)

49

95%

C₂₆₉H₃₈₁N₆₇O₈₂S₂

5929.5

Synthetic

Osteocalcin (OC) is a 49 amino acid peptide found exclusively in bone tissue and is highly conserved among species. It is a vitamin K- and D-dependent protein produced by osteoblasts, osteocytes and odontoblasts. It is deposited in extracellular bone matrix and is found in the serum. Serum osteocalcin, hydrolysed in the kidney and liver, is considered a specific marker of osteoblast activity and bone formation rate. It may be involved in regulation of osteoblast function, regulation of bone turnover and/or mineralization.

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

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