rpoB genotypes of Mycobacterium tuberculosis Beijing family isolates from East Asian countries

Lishi Qian, Chiyoji Abe, Tao Ping Lin, Ming Chih Yu, Sang Nae Cho, Sumin Wang, James T. Douglas

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The 81-bp region of the rpoB gene in 66 Rif Mycobacterium tuberculosis isolates from China, Japan, Korea, and Taiwan was analyzed. Twelve single-nucleotide substitutions in the rpoB gene were detected. The most prevalent mutations were at Ser-531 (52%), Asp-516 (17%), and His-526 (11%). Mutations were not found in seven (11%) of the isolates. Higher mutation rates in 50 Beijing family isolates were found than in other isolates for mutations at Asp-516 (18 and 12.5%, respectively) and His-526 (12 and 6.3%, respectively). The different rates of mutation may reflect the choice of rifamycin analogs.

Original languageEnglish
Pages (from-to)1091-1094
Number of pages4
JournalJournal of Clinical Microbiology
Issue number3
Publication statusPublished - 2002 Mar 20


All Science Journal Classification (ASJC) codes

  • Microbiology (medical)

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