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J. Bacteriol., 06 1996, 3508-3516, Vol 178, No. 12
B Stevenson, K Tilly and PA Rosa
We have identified four loci in Borrelia burgdorferi B31 that contain open
reading frames capable of encoding six proteins that are related to the
antigenic proteins OspE and OspF. We have designated these proteins Erp,
for OspEF-related protein, and named their respective genes erp. The erpA
and erpB genes are linked, as are erpC and erpD, and the pairs probably
constitute two operons. The erpG and erpH genes appear to be monocistronic.
The ErpA and ErpC proteins are expressed by B. burgdorferi B31 in culture
and are recognized by a polyclonal antiserum raised against the OspE
protein of B. burgdorferi N40. The four erp loci are each located on
different 32-kb circular plasmids that contain additional DNA sequences
that are homologous to each other and to an 8.3-kb circular plasmid of B.
burgdorferi sensu lato Ip2l. All four 32-kb plasmids can be maintained
within a single bacterium, which may provide a model for the study of
plasmid replication and segregation in B. burgdorferi.
Copyright © 1996, American Society for Microbiology
A family of genes located on four separate 32-kilobase circular plasmids in Borrelia burgdorferi B31
Laboratory of Microbial Structure and Function, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, Hamilton, Montana, USA.
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