The National Institute of Allergy and Infectious Diseases (NIAID) sponsored Pathogen Functional Genomics Resource Center (PFGRC) at The Institute for Genomic Research (TIGR) is planning on making available, at no cost to the research community, recombinant entry clones of full length open reading frames (ORFs) constructed in Invitrogen's Gateway® Cloning Technology. Investigators may choose to order clones from the existing PFGRC inventory, or create a custom clone set based on their specific research needs. The initial clone set offering is the SARS-CoV Gateway® Cloneset, described below and is available immediately upon request (http://pfgrc.jcvi.org/index.php/gateway_clones.html). Additional inventory Gateway® Clonesets will be constructed based on the genomes of S. pneumoniae, B. anthracis, Y. pestis, and M. tuberculosis. Availability of custom clone set orders and additional inventory clone sets will be announced here and on the NIAID PFGRC web site (http://www3.niaid.nih.gov/LabsAndResources/resources/pfgrc/default) in the next several months.