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Nucleic Acids Res. 2010 Jan;38(Database issue):D743-9. doi: 10.1093/nar/gkp999. Epub 2009 Nov 11.

Protein Structure Initiative Material Repository: an open shared public resource of structural genomics plasmids for the biological community.

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Arizona State University, Biodesign Institute, Virginia G Piper Center for Personalized Diagnostics, 1001 S McAllister Dr Tempe, AZ 85287-6401, USA.


The Protein Structure Initiative Material Repository (PSI-MR; provides centralized storage and distribution for the protein expression plasmids created by PSI researchers. These plasmids are a resource that allows the research community to dissect the biological function of proteins whose structures have been identified by the PSI. The plasmid annotation, which includes the full length sequence, vector information and associated publications, is stored in a freely available, searchable database called DNASU ( Each PSI plasmid is also linked to a variety of additional resources, which facilitates cross-referencing of a particular plasmid to protein annotations and experimental data. Plasmid samples can be requested directly through the website. We have also developed a novel strategy to avoid the most common concern encountered when distributing plasmids namely, the complexity of material transfer agreement (MTA) processing and the resulting delays this causes. The Expedited Process MTA, in which we created a network of institutions that agree to the terms of transfer in advance of a material request, eliminates these delays. Our hope is that by creating a repository of expression-ready plasmids and expediting the process for receiving these plasmids, we will help accelerate the accessibility and pace of scientific discovery.

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