This collection has been transfered to Dr. Greg Phillips at the Department of Veterinary Microbiology, Iowa State University, Ames, IA, 50011, Telephone: (515) 294-1525, Fax: (515) 294-1401, Email: gregory@iastate.edu

This collection consists of about 1,000 naturally occuring plasmids from E. coli, other enteric bacteria, and staphylococcus aureus. The collection was started in 1976 by Dr. Esther Lederberg at Stanford University, previously called the "Plasmid Reference Center". This collection contains plasmids of all types of genes, coding for antibiotic resistance, heavy metal resistance, virulence, conjugation, colicins, transposons, and other unknown factors. Most of these plasmids have not been thoroughly studied. Some plasmids have been assembled as kits for (1) plasmid incompatibility group classification, (2) prototype colicins, (3) transposons 1 to 10 standards, and (4) distinguishable antibiotic resistance subtypes. Please contact Dr. Greg Phillips for more information.