Journal of the American Chemical Society, 129(25), 7936-7949 (2007-06-07)
We report a combined experimental and computational study of the proline effect in model dipeptides Pro-Gly and Gly-Pro. Gas-phase protonated peptide ions were discharged by glancing collisions with potassium or cesium atoms at 3 keV collision energies, and the peptide
A series of dipeptides of L-proline-L-amino acid and L-proline-D-amino acid were synthesized to evaluate the catalytic effect for asymmetric direct aldol reactions. In the direct aldol reaction, a catalyst of L-proline-L-amino acid achieves better enantioselectivity than the corresponding L-proline-D-amino acid
Journal of magnetic resonance (San Diego, Calif. : 1997), 135(2), 454-465 (1999-01-08)
Analytical expressions have been derived that translate uncertainties in distance constraints (obtained from NMR investigations) into uncertainties in atom positions in the maximum likelihood (ML) structure consistent with these inputs. As a test of this approach, a comparison was made
The Journal of biological chemistry, 269(15), 11391-11399 (1994-04-15)
Lactococcus lactis takes up di- and tripeptides via a proton motive force-dependent carrier protein. The gene (dtpT) encoding the di-tripeptide transport protein of L. lactis was cloned by complementation of a dipeptide transport-deficient and proline auxotrophic Escherichia coli strain. Functional
The Journal of organic chemistry, 74(13), 4812-4818 (2009-05-23)
Tetrapeptides, containing a terminated primary amine and conformationally restricted D-Pro-Gly or D-Pro-Aib (2-aminoisobutanoic acid) segment as a strongly beta-turn-nucleating element, were designed and synthesized with condensation of N-module dipeptides with C-module dipeptides in solution. They were first applied to catalyze
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