Unit

UNIT 27.2 Nucleic Acid Programmable Protein Arrays: Versatile Tools for Array-Based Functional Protein Studies

  1. Shane Miersch,
  2. Joshua LaBaer

Published Online: 1 APR 2011

DOI: 10.1002/0471140864.ps2702s64

Current Protocols in Protein Science

Current Protocols in Protein Science

How to Cite

Miersch, S. and LaBaer, J. 2011. Nucleic Acid Programmable Protein Arrays: Versatile Tools for Array-Based Functional Protein Studies. Current Protocols in Protein Science. 64:27.2:27.2.1–27.2.26.

Author Information

  1. Biodesign Institute at Arizona State University, Tempe, Arizona

Publication History

  1. Published Online: 1 APR 2011
  2. Published Print: APR 2011

Abstract

Protein microarrays offer a global perspective on the function of expressed gene products. However, technical issues related to the stability and dynamic range of microarrays printed with purified protein have hampered their widespread adoption. Taking an alternate approach, the Nucleic Acid Programmable Protein Array (NAPPA) is constructed by spotting protein-encoding plasmid DNA at high density, in addressable fashion, on an array surface. Proteins are subsequently generated in situ just prior to experimentation using cell-free expression systems. As such, the NAPPA platform offers a unique and viable alternative that circumvents many of the inherent limitations of spotted protein arrays, enabling diverse functional protein studies including protein–small molecule, protein-protein, antigen-antibody, and protein–nucleic acid interactions. It further offers a versatile and adaptable platform amenable to a variety of capture modalities and expression systems, and, most importantly, construction of the array is accessible to any lab with an array printer and laser slide scanner. This unit is intended to provide a reference for investigators wishing to generate arrays based on this platform, and details (1) the basic construction of cDNA-based protein microarrays from DNA isolation to printing and development, (2) quality-control efforts taken to ensure the usefulness and integrity of microarray data, and (3) a particular example of the application of self-assembling protein arrays to screen for blood-borne antibody biomarkers. Curr. Protoc. Protein Sci. 64:27.2.1-27.2.26. © 2011 by John Wiley & Sons, Inc.

Keywords:

  • protein microarray;
  • antibodies;
  • serum profiling