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. 2009 Oct 26;78(1):495–504. doi: 10.1128/IAI.00838-09

TABLE 1.

Type B plasmid sizes and plasmid-borne virulence gene locations

Isolatea Size(s) (kb) of plasmid(s) carrying:
etx cpb tpeL cpb2 tcpF/H rep lam ureC IS1151
CN1794 65 90 90 65 65/80/90 65/90 80 80 65/80/90
CN1990b 65 90 90 65 65/80/90 65/90 80 80 65/80/90
NCTC3110b 65c 65 65 65 65 65 65
CN677b 65c 65 65 65 65 65 65
CN1793b 65 90 90 65 65/80/90 65/90 80 80 65/80/90
CN1795 65 90 90 65 65/80/90 65/90 80 80 65/80/90
CN1886b 65 90 90 65 65/80/90 65/90 80 80 65/80/90
CN2003b 65 90 90 65 65/80/90 65/90 80 80 65/8090
CN2414b 65 90 90 65 65/80/90 65/90 80 80 65/80/90
CN2416b 65 90 90 65 65/80/90 65/90 80 80 65/80/90
CN3425b 65 90 90 65 65/80/90 65/90 80 80 65/80/90
CN3434b 65 90 90 65 65/80/90 65/90 80 80 65/80/90
CN3447 65 90 90 65 65/80/90 65/90 80 80 65/80/90
NCTC8533b 65 90 90 65 65/80/90 65/90 80 80 65/90
PS49 65 90 90 65 65/80/90 65/90 80 80 65/90
JGS1984 65 90 90 65 65/80/90 65/90 65/90
Bar2 65 90 90 65 65/80/90 65/90 65/90
a

Isolates with a CN prefix originated from the Burroughs-Wellcome collection, which included a number of type B isolates typically collected from diseased animals (usually lambs) during the 1930s to 1960s. Except as otherwise indicated, the geographical and disease origins of the isolates are unknown except that Bar2 was obtained from an Australian sheep and NCTC3110 is a vaccine production strain isolated in Kenya.

b

Originated from the United Kingdom.

c

The etx and cpb genes of NCTC3110 and CN677 are located on a 65-kb plasmid different from their 65-kb plasmid carrying the cpb and tpeL genes.