Volume 76, Issue 5
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645


We have previously identified as a gene specific to the subspecies. is a truncated -like telomeric gene transcribed by RNA polymerase II. The TGSGP protein localizes to the flagellar pocket, and exhibits features compatible with a role as surface receptor. Here we show that is physically linked to a truncation of a gene homologous to yeast (), a gene involved in internal vesicular formation. Further analysis indicated that is heterozygous for (), with each allele located on independent chromosome II homologues. In 18 isolates from distinct geographical origins and different hosts, this genomic rearrangement was conserved. The size of the intergenic region between and truncated varied among isolates but was similar in isolates of the same geographical area, and this observation may be used in epidemiology to trace the geographical origin of isolates.


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  • Received : 06 Dec 2006
  • Accepted : 12 Jan 2007

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