Improving the binding affinity of in-vitro-evolved cyclic peptides by inserting atoms into the macrocycle backbone
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A new method for the synthesis of cycloisodityrosine atropisomers I (R1 = CO2Me, R2 = NHBoc), a 14-membered m,p-cyclophane, is reported. The synthesis hinged on an efficient macrocyclization procedure for biaryl ether formation based on an intramol. SNAr r ...
The laminin-based nonapeptide Cys-Asp-Pro-Gly-Tyr-Ile-Gly-Ser-Arg (CDPGYIGSR) and pentapeptide Tyr-Ile-Gly-Ser-Arg (YIGSR) have been previously demonstrated to support the attachment of several cell types and to competitively bind to the 67-kDa high affini ...
The asym. synthesis of two appropriately functionalized nonproteinogenic amino acids I (Troc = CO2CH2CCl3, TBS = SiMe2CMe3) and II (Boc = Me3CO2C) needed for the total synthesis of vancomycin is described. The assemblage of these amino acids into linear tr ...
A review with 64 refs., including discussion of the structural flexibility of organometallic species, the stereochem. of 2-alkenylmetal compds., and the origin of the endo effect. [on SciFinder (R)] ...
The nucleotide sequence of the ompA gene from Shigella dysenteriae has been determined and the amino acid sequence of the pro-OmpA protein predicted. Sequence comparison between the ompA genes of S.dysenteriae and Escherichia coli showed that features such ...
The tetra-alanine substitution variant KHRR 296-299 AAAA of tissue-type plasminogen activator (t-PA) was previously shown to have enhanced fibrin specificity and enhanced activity in the presence of fibrin compared with the wild-type form of the molecule. ...
