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Product Name
Human PTHrP-(1-36) peptide (TFA removed)
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Documents
Batch to batch variation of the purity
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Sequence Shortening
H-AVSEHQLLHDKGKSIQDLRRRFFLHHLIAEIHTAEI-OH
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Sequence
H-Ala-Val-Ser-Glu-His-Gln-Leu-Leu-His-Asp-Lys-Gly-Lys-Ser-Ile-Gln-Asp-Leu-Arg-Arg-Arg-Phe-Phe-Leu-His-His-Leu-Ile-Ala-Glu-Ile-His-Thr-Ala-Glu-Ile-OH
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Length (aa)
36
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Peptide Purity (HPLC)
98.14%
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Molecular Formula
C191H305N59O52
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Molecular Weight
4259.81
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Source
Synthetic
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Form
Powder
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Description
Human PTHrP-(1-36) is a secretory form of PTHrP with anticalciuric effects. Human PTHrP-(1-36) enhances beta cell function and proliferation. Human PTHrP-(1-36) can be used in the research of humoral hypercalcemia of malignancy (HHM) and hyperparathyroidism. Cas No.: 172867-62-8
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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
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References
- Everhart-Caye M, et al. Parathyroid hormone (PTH)-related protein(1-36) is equipotent to PTH(1-34) in humans. J Clin Endocrinol Metab. 1996 Jan;81(1):199-208.
- Orloff JJ, et al. Analysis of PTHRP binding and signal transduction mechanisms in benign and malignant squamous cells. Am J Physiol. 1992 May;262(5 Pt 1):E599-607.
- Guthalu Kondegowda N, et al. Parathyroid hormone-related protein enhances human ß-cell proliferation and function with associated induction of cyclin-dependent kinase 2 and cyclin E expression. Diabetes. 2010 Dec;59(12):3131-8.
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About TFA salt
Trifluoroacetic acid (TFA) has a significant impact on peptides due to its role in the peptide synthesis process.
TFA is essential for the protonation of peptides that lack basic amino acids such as Arginine (Arg), Histidine (His), and Lysine (Lys), or ones that have blocked N-termini. As a result, peptides often contain TFA salts in the final product.
TFA residues, when present in custom peptides, can cause unpredictable fluctuations in experimental data. At a nanomolar (nM) level, TFA can influence cell experiments, hindering cell growth at low concentrations (as low as 10 nM) and promoting it at higher doses (0.5–7.0 mM). It can also serve as an allosteric regulator on the GlyR of glycine receptors, thereby increasing receptor activity at lower glycine concentrations.
In an in vivo setting, TFA can trifluoroacetylate amino groups in proteins and phospholipids, inducing potentially unwanted antibody responses. Moreover, TFA can impact structure studies as it affects spectrum absorption.
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Molar Concentration Calculator
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Dilution Calculator
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Percent Concentration Calculator
Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)
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