Enzyme Modulators

H-FERQHM-OH peptide, corresponding to RNase A 8-13 (Chain A of bovine pancreatic ribonuclease) is a non-amyloidogenic peptide, that can be used as a negative control in amyloid formation experiments together with CRB1001320.

Proprotein convertase subtilisin/kexin type 9 (PCSK9) is negative regulator of hepatic low-density lipoprotein (LDL) receptors by promoting their degradation. This leads to an increase in plasma levels of cholesterol-LDL (LDL-c). PCSK9 binds to the LDL receptor at the epidermal growth factor precursor homology domain A (EGF-A) which leads the receptor to be targeted for degradation. Natural loss of function mutations in PCSK9 have been linked to improved coronary health and lower cholesterol levels with reduced risk of coronary heart disease. This has led to further study to find inhibitors of PCSK9 with the hope that they may be clinically relevant in the future.As discussed, PCSK9 binds to EGF-A on the LDL receptor. A peptide named pep 2-8 is a mimic of EGF-A and binds PCSK9 in the same manner observed with the LDL receptor. Pep 2-8 is a potent selective competitive inhibitor of PCSK9. Pep 2-8 restores LDL receptor function and LDL uptake of PCSK9-treated HepG2 cells. This is still an active area of research to optimise inhibition of PCSK9 for cholesterol regulation.Pep 2-8 has also been utilised as an anchor peptide in phage-display experiments to bind an extension peptide library to the groove site.Peptide Ac-TVFTSWEEYLDWV-NH2 is a Research Peptide with significant interest within the field academic and medical research. This peptide is available for purchase at Cymit Quimica in multiple sizes and with a specification of your choice.

Inhibitor of acetylcholinesterase

Aldose reductase AKR1B10 inhibitor; hepatotoxic

Cyclosporin B is an antifungal and immunosuppressive cyclic peptide, which is derived from the fungus *Tolypocladium inflatum*. The compound is a member of the cyclosporin family, characterized by cyclic polypeptides with a unique arrangement of amino acids that enable its biological activity. Though its precise mode of action is not completely delineated, it is observed to influence cell growth and viability by potentially disrupting cellular communication or signal transduction pathways.