sGnRH-A peptide

sGnRH-A peptide

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

Batch to batch variation of the purity

Pyr-HWSYrWLP-NHEt, r=D-Arg

Pyr-His-Trp-Ser-Tyr-D-Arg-Trp-Leu-Pro-NHEt

8

95.74%

C₆₄H₈₃N₁₇O₁₂

1282.45

96497-82-4

121493629

Synthetic

Powder

sGnRH-A ([D-Arg⁶, Pro⁹]-LHRH) is a synthetic analog of gonadotropin-releasing hormone (GnRH). sGnRH-A can elevate the GH mRNA level and stimulate the GH secretion in common carp pituitary fragments in a dose-dependent manner. Compared to other GnRHs and its analogs, it shows a higher potency in increasing the GH mRNA level and GH release. In a time-course experiment, its function on GH secretion was observed after 6 h incubation, while its effect on the GH mRNA level was noted after 12 h treatment. Among mammalian GnRH, avian GnRH, and piscine GnRH, sGnRH and sGnRH-A showed the highest potency in increasing GH mRNA level and GH release, followed by cGnRH-II ([His⁵, Tyr⁸]-LHRH), and finally LHRH and LHRH-A ([D-Trp⁶, Pro⁹]-LHRH).

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

• Li WS, Lin HR, Wong AO. Effects of gonadotropin-releasing hormone on growth hormone secretion and gene expression in common carp pituitary. Comp Biochem Physiol B Biochem Mol Biol. 2002 Jun;132(2):335-41. doi: 10.1016/s1096-4959(02)00039-8. PMID: 12031458.

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.