[EN] LUMINESCENT DYES WITH A WATER-SOLUBLE INTRAMOLECULAR BRIDGE AND THEIR BIOLOGICAL CONJUGATES [FR] COLORANTS LUMINESCENTS AVEC PONT INTRAMOLÉCULAIRE HYDROSOLUBLE ET LEURS CONJUGUÉS BIOLOGIQUES
Unnatural amino acids increase sensitivity and provide for the design of highly selective caspase substrates
作者:M Poreba、P Kasperkiewicz、S J Snipas、D Fasci、G S Salvesen、M Drag
DOI:10.1038/cdd.2014.64
日期:2014.9
proteases - the human caspases. The power of this library for caspase discrimination extends far beyond traditional PS-SCL approach, as in addition to 19 natural amino acids we also used 110 diverse unnatural amino acids that can more extensively explore the chemical space represented by caspase-active sites. Using this approach we identified and employed peptide-based substrates that provided excellent
A superior substrate sequence for BACE1 containing transition-state mimics at the scissile site was evaluated as a proteaseinhibitor. Hydroxymethylcarbonyl (HMC) and hydroxyethylamine (HEA) isosteres were selected as the transition state mimics, and incorporated into the scissile site of the superior sequence covering the P4 to P1’ sites (Glu-Ile-Thi-Thi*Nva; *denotes the cleavagesite). Isosteres
the vancomycin structure. Herein, we describe the development of synthetic technology based on the design of a novel selenium safety catch linker, application of this technology to a solid-phase semisynthesis of vancomycin, and the solid- and solution-phase synthesis of vancomycin libraries. Biological evaluation of these compound libraries led to the identification of a number of in vitro highly potent
作者:Ronald L Wolin、Hariharan Venkatesan、Liu Tang、Alejandro Santillán、Tristin Barclay、Sandy Wilson、Doo Hyun Lee、Timothy W Lovenberg
DOI:10.1016/j.bmc.2004.05.042
日期:2004.8
alpha-amino acid derivatives were prepared as glycine transport inhibitors and their ability to block the uptake of [(14)C]-glycine in COS7 cells transfected with human glycine transporter-2 (hGlyT-2) was evaluated. An array of substituents at the chiral center was studied and overall, L-phenylalanine was identified as the preferred amino acid residue. Compounds prepared from l-amino acids were more
Selective Substrates and Activity-Based Probes for Imaging of the Human Constitutive 20S Proteasome in Cells and Blood Samples
作者:Wioletta Rut、Marcin Poręba、Paulina Kasperkiewicz、Scott J. Snipas、Marcin Drąg
DOI:10.1021/acs.jmedchem.8b00026
日期:2018.6.28
the HyCoSuL approach, we designed and synthesized novel and selective fluorogenic substrates for each of these three constitutive 20S proteasome activities and applied them to assess inhibition of proteasome subunits by MG-132 and a clinically used inhibitor bortezomib. Our results confirm the utility of designed substrates in biochemical assays. Furthermore, selective peptide sequences obtained in this