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This approach inspired other programmes: N-hexanoic-Tyr-D-Arg : enkephalin-derived, protease-resistant, studied for pain N-methyl-Aib inclusions : N-methyl substitutions increase membrane permeability at the cost of partial loss of receptor affinity Beta-peptides and D-amino acids : substitution of natural chiral residues by their D enantiomers, making the peptide invisible to endogenous proteases while (sometimes) preserving function Stapled peptides : hydrocarbon cyclisation, popularised by Verdine (Harvard), stabilises alpha helices and improves cellular penetration These strategies progressively shift the peptide / small molecule frontier
every withdrawn amount contains the fixed ratio
Het zwavelatoom in de thiolgroep van cystene, een organische verbinding waarin het zuurstofatoom vervangen is door een zwavelatoom, is belangrijk voor de antioxidant functie van glutathion
These effects may lead to temporary or permanent infertility, impaired spermatogenesis or oogenesis, and increased risk of congenital anomalies in the event of conception during treatment
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