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Solid-phase synthesis is a common technique for peptide synthesis.Usually, peptides are synthesised from the carbonyl group side (C-terminus) to amino group side (N-terminus) of the amino acid chain in the SPPS method, although peptides are biologically synthesised in the opposite direction in cells.
Scheme of solid-phase peptides synthesis (SPPS) on a resin as solid support with protected amino acids.The deprotection is usually done using a base such as piperidine.This is followed by a coupling step (a protected amino acid is added) to the growing peptide chain.
Combinatorial split-mix (split and pool) synthesis [12] [13] is based on the solid-phase synthesis developed by Merrifield. [14] If a combinatorial peptide library is synthesized using 20 amino acids (or other kinds of building blocks) the bead form solid support is divided into 20 equal portions. This is followed by coupling a different amino ...
Due to the preference for a cis-amide bond [10] with the preceding residue of C2-substituted pseudoprolines, their incorporation results in a kink conformation of the peptide backbone, thus preventing peptide aggregation, self-association, or β-structure formation. Strategies for the use of Pseudoproline in Solid-Phase Peptide Synthesis (SPPS).
The split and pool synthesis was first applied to prepare peptide libraries on solid support. The synthesis was realized in a home-made manual device shown in the figure. The device has a tube with 20 holes to which reaction vessels could be attached. One end of the tube is linked to a waste container and a water pump.
These studies led to the need for peptide synthesis and, eventually, to the idea for solid phase peptide synthesis (SPPS) in 1959. In 1963, he was sole author of a classic paper in the Journal of the American Chemical Society in which he reported a method he called "solid phase peptide synthesis". [4]
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