It's very useful to prepare novel and bioisomeric amino acid in peptide chemistry.Now SpeedChemical can offer a new product:Fmoc-β-dimethyl-Asp（OtBu）-OH（SP-79007，CAS#1392219-11-2） to the peptide researchers.This novel Fmoc-amino acid is just as a adduct between Fmoc-Asp（OtBu）-OH and Fomc-Val-OH。This reagent can be easily used to the solid-phase peptide synthesis.Please see its产品段for details。
Bioactive peptides have evolved to optimally fulfill specific biological functions，afact which has long attracted attention for their use as therapeutic agents.While there have been some recent commercial successes fostered in part by advances in large-scale peptide synthesis，developtides of peptagentas ly impeded by their inherent susceptibility to protease degradation in the bloodstream.Here we report that incorporation of specially designed amino acid analogues at the P1’position，directly C-terminal of the enzyme cleavage site，renders peptides，including glucagon-lipeptide-1（7-36）amote and单击功能区上，highly resistant to serine protease degradation without significant alteration of their biological activity.We demonstrate the applicability of the method to a variety of proteases，including dipeptidyl peptidase IV（DPP IV），dipeptidyl peptidase8（DPP8），fibroblast activation proteinα（FAPα），α-lytic protease（αLP），trypsin，and chymotrypsin.In summary，the“P1'modification”represents a simple，general，and high ly adaptable method of generating enzymatically stable peptide-based therapeutics。
