Trichoplaxin (unclassified simpliest animals) peptide

Trichoplaxin (unclassified simpliest animals) peptide

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

Batch to batch variation of the purity

FFGRLKSVWSAVKHGWKAAKSR

Phe-Phe-Gly-Arg-Leu-Lys-Ser-Val-Trp-Ser-Ala-Val-Lys-His-Gly-Trp-Lys-Ala-Ala-Lys-Ser-Arg

22

95.3%

Synthetic

Powder

41.6% similar to Phylloseptin-H9 and NRC-10. The peptide was identified from Trichoplax adhaerens, the only described species in the phylum Placozoa, structurally simplest multicellular animal. Active against Gram+ S. aureus (MRSA), L. ivanovii (MIC 3 uM), E. faecalis (MIC 12.5 uM), Gram- bacteria E. coli ATCC 25922, P. aeruginosa ATCC 27853, A. baumannii ATCC 19606, K. pneumoniae ATCC 13883 (MIC 3-6 uM), fungi C. albicans ATCC 90028 and C. parapsilosis ATCC 22019 (MIC 25-50 uM). This peptide showed a relatively good cell selectivity index (65-260). Trichoplaxin is random in water but helical in the presence of membrane-mimetic models such as SDS or TFE. Reg. 9/29/2014; 12/16/2014. Trichoplaxin (unclassified simpliest animals) was found in identified in the EST database, Trichoplax adhaerens.

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

• Simunić J, Petrov D, Bouceba T, Kamech N, Benincasa M, Juretić D. Trichoplaxin - a new membrane-active antimicrobial peptide from placozoan cDNA. Biochim Biophys Acta. 2014;1838(5):1430-8.

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.