Dby HY Peptide

Dby HY Peptide

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

H-NAGFNSNRANSSRSS-OH

H-Asn-Ala-Gly-Phe-Asn-Ser-Asn-Arg-Ala-Asn-Ser-Ser-Arg-Ser-Ser-OH

15

95.24%

C₆₀H₉₇N₂₅O₂₅

1568.55

Synthetic

Powder

Dby HY Peptide, NAGFNSNRANSSRSS, is a HYAb epitope belonging to a well-conserved family of genes coding for known or putative RNA helicases and containing a core sequence with a DEAD (Asp-Glu-Ala-Asp) box peptide motif, hence the name Dby (Dead box RNA helicase Y). The single Phenylalanine in the sequence serves as the anchor point while FNSNRANSS most likely is the "core" sequence of this HYAb epitope.

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

• Scott, D. et al. Immunity 12, 711 (2000), doi: 10.1016/S1074-7613(00)80221-6

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.