Peptide Array Synthesis
Peptide Array Synthesis - Related Videos
08:07
Personalized Peptide Arrays for Detection of HLA Alloantibodies in Organ Transplantation
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Cited by 2 •
2017
Mismatches in human leukocyte antigen (HLA) sequences between organ donor and recipient pairs are the major cause of antibody-mediated rejection in organ transplantation. Here we present the use of custom antigen arrays that are based on individual donors' HLA sequences to probe anti-donor HLA alloantibodies in organ recipients.
13:37
Split-and-pool Synthesis and Characterization of Peptide Tertiary Amide Library
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Cited by 5 •
2014
Peptide tertiary amides (PTAs) are a superfamily of peptidomimetics that include but are not limited to peptides, peptoids and N-methylated peptides. Here we describe a synthetic method which combines both split-and-pool and sub-monomer strategies to synthesize a one-bead one-compound library of PTAs.
11:42
Solid Phase Synthesis of a Functionalized Bis-Peptide Using "Safety Catch" Methodology
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Cited by 2 •
2012
The efficient solid-phase peptide synthesis of a functionalized bis-peptide trimer utilizing a "safety catch" cleavage procedure from HMBA resin is described.
06:19
An Inexpensive Adaptation of a Commercial Microwave Reactor for Solid Phase Peptide Synthesis
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2024
A simple, inexpensive, and novel apparatus for performing solid phase peptide syntheses in a commercial microwave reactor is presented.
03:15
A Peptide Array-Based Detection of Anti-donor HLA Alloantibodies in Organ Recipients
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2025
This video demonstrates an assay to detect anti-donor HLA alloantibodies in organ recipients. A peptide array is synthesized to represent potential epitopes for antibody-mediated organ rejection. The array is incubated with the recipient's serum, containing alloantibodies that bind to their target epitopes. Antibody binding is detected using chemiluminescence to identify donor-specific HLA epitopes that incite alloantibody reactivity.
FAQs
Peptide array synthesis relies on alternating protected amino-acid coupling and deprotection cycles. During coupling, a selected residue is added to a growing chain; deprotection exposes the reactive site for the next addition. Repeating this sequence at controlled locations builds different peptides in parallel. The protection strategy is therefore central to preserving chain order and preventing unwanted additions.
Each position on a membrane or chemically functionalized surface corresponds to a defined sequence, so an assay signal can be linked back to sequence identity by location. This arrangement lets researchers compare many variants within the same experimental format rather than infer identities from a mixed pool. It supports systematic mapping of binding preferences and sequence-dependent interactions.
Observed signal can depend on peptide length, how the peptide is attached to the surface, and the assay conditions, not solely on the sequence-dependent interaction being tested. These variables can change the measured recognition pattern across locations. Consequently, comparisons should consider peptide presentation and experimental conditions when interpreting apparent binding or sequence specificity.
The parallel arrangement places many peptides on a shared support, reducing sample use and accelerating screening compared with evaluating sequences separately. This format is especially useful for broad sequence surveys in which researchers compare binding or recognition across many variants. It does not remove the need to interpret signals in relation to peptide length, surface attachment, and assay conditions.
Researchers assign desired sequences to positions on a membrane or chemically functionalized surface, then repeat protected residue coupling and deprotection cycles until the peptides reach their intended compositions. The completed array is examined under biochemical assay conditions, and signals are interpreted by location so each molecular interaction can be associated with its corresponding peptide sequence.
Peptide arrays can map antibody or receptor-binding sites, identify enzyme substrates, profile recognition of post-translational modifications, and evaluate sequence specificity. These applications connect sequence variation with molecular interaction patterns, making the method useful for comparative biochemical screening. Because peptide length, surface attachment, and assay conditions influence signals, results are interpreted as array-based recognition profiles.