NY-ESO-1 (87-111) peptide

NY-ESO-1 (87-111) peptide

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

Batch to batch variation of the purity

H-LLEFYLAMPFATPMEAELARRSLAQ-OH

H-Leu-Leu-Glu-Phe-Tyr-Leu-Ala-Met-Pro-Phe-Ala-Thr-Pro-Met-Glu-Ala-Glu-Leu-Ala-Arg-Arg-Ser-Leu-Ala-Gln-OH

25

95.47%

C₁₃₁H₂₀₆N₃₂O₃₆S₂

2869.35

Synthetic

Powder

This is amino acids 81 to 111 fragment of the NY-ESO-1. The NY-ESO-1 antigen is expressed by many tumors of different histological types (including breast, prostate, lung, and melanoma) and by male germline cells, but not by other normal tissues. NY-ESO-1 encodes MHC class I- and class II-restricted peptides expressed by a diverse range of cancers and recognized by T cells. This peptide is pan-MHC class II-restricted sequence that is capable of binding to multiple HLA-DR and HLA-DP4 molecules, including HLA-DRB1*0101, 0401, 0701, and 1101 and HLA-DPB1*0401 and 0402 molecules.

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

• Mandic, M. et al. J. Immunol. 174, 1751 (2005).

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.