lifesciences
Innopsys

Epitope Identification from Fixed-complexity Random-sequence Peptide Microarrays

Josh Richer, Stephen Albert Johnston, and Phillip Stafford. Arizona State University, Tempe, Arizona 85287 

Abstract

Antibodies play an important role in modern science and medicine. They are essential in many biological assays and have emerged as an important class of therapeutics. Unfortunately, current methods for mapping antibody epitopes require costly synthesis or enrichment steps, and no low-cost universal platform exists. In order to address this, we tested a random-sequence peptide microarray consisting of over 330,000 unique peptide sequences sampling 83% of all possible tetramers and 27% of pentamers. It is a single, unbiased platform that can be used in many different types of tests, it does not rely on informatic selection of peptides for a particular proteome, and it does not require iterative rounds of selection.

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