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Mycology

Genetic Diversity of Pneumocystis carinii f. sp. hominis Based on Variations in Nucleotide Sequences of Internal Transcribed Spacers of rRNA Genes

Laila F. Nimri, Iaci N. S. Moura, Laurence Huang, Carlos del Rio, David Rimland, Jeffrey S. Duchin, Ellen M. Dotson, Charles B. Beard
Laila F. Nimri
1Centers for Disease Control and Prevention
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  • For correspondence: nimri@just.edu.jo
Iaci N. S. Moura
1Centers for Disease Control and Prevention
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Laurence Huang
2San Francisco General Hospital, University of California, San Francisco, California
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Carlos del Rio
3Division of Infectious Diseases, Emory University School of Medicine
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David Rimland
3Division of Infectious Diseases, Emory University School of Medicine
4Veterans Affairs Medical Center, Atlanta, Georgia
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Jeffrey S. Duchin
5Division of Infectious Diseases, University of Washington, Seattle, Washington
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Ellen M. Dotson
1Centers for Disease Control and Prevention
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Charles B. Beard
1Centers for Disease Control and Prevention
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DOI: 10.1128/JCM.40.4.1146-1151.2002
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    FIG. 1.

    Nucleotide sequences of 12 new types of ITS1 sequences of P. carinii f. sp. hominis. Bases that are identical to those of the prototype sequence are indicated by periods, missing bases are indicated by hyphens, and bases that are different from those of the prototype sequence are shown. The sequences after position 130 are not shown because no sequence variations were found in these areas. The inserted base A observed at position 50 in clone 10B is shown.

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    FIG. 2.

    Nucleotide sequences of 16 new types of ITS2 sequences of P. carinii f. sp. hominis. Bases that are identical to those of the prototype sequence are indicated by periods, missing bases are indicated by hyphens, and bases that are different from those of the prototype sequence are shown. The sequences before position 41 are not shown because no sequence variations are found in these areas except for sequence 84C, where G was replaced by A at position 19. The inserted bases observed in clones 60A (TT at positions 166 and 167) and 84C (C at position 130) are shown.

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  • TABLE 1.

    P. carinii sp. f. hominis ITS1 and ITS2 sequence types found in 180 sequences cloned from 60 specimens

    ITS1 typeNo. (%) of ITS1 sequencesITS2 typeNo. (%) of ITS2 sequences
    A2 (1.1)a5 (2.8)
    B7 (3.9)b6 (3.3)
    C1 (0.6)c7 (3.9)
    D2 (1.1)e42 (23.3)
    E109 (60.5)f1 (0.6)
    F2 (1.1)g48 (26.7)
    I1 (0.6)h15 (8.3)
    K5 (2.8)i1 (0.6)
    N39 (21.7)FR0043 (1.7)
    Newa12 (6.7)IT0073 (1.7)
    DK0295 (2.8)
    DK3231 (0.6)
    DK5943 (1.7)
    Newa16 (8.9)
    Subtypesb24 (13.3)
    • ↵ a Sequences with variations from the prototype sequence at five or more positions.

    • ↵ b Sequences with variations from the prototype sequence at less than five positions.

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Genetic Diversity of Pneumocystis carinii f. sp. hominis Based on Variations in Nucleotide Sequences of Internal Transcribed Spacers of rRNA Genes
Laila F. Nimri, Iaci N. S. Moura, Laurence Huang, Carlos del Rio, David Rimland, Jeffrey S. Duchin, Ellen M. Dotson, Charles B. Beard
Journal of Clinical Microbiology Apr 2002, 40 (4) 1146-1151; DOI: 10.1128/JCM.40.4.1146-1151.2002

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Genetic Diversity of Pneumocystis carinii f. sp. hominis Based on Variations in Nucleotide Sequences of Internal Transcribed Spacers of rRNA Genes
Laila F. Nimri, Iaci N. S. Moura, Laurence Huang, Carlos del Rio, David Rimland, Jeffrey S. Duchin, Ellen M. Dotson, Charles B. Beard
Journal of Clinical Microbiology Apr 2002, 40 (4) 1146-1151; DOI: 10.1128/JCM.40.4.1146-1151.2002
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KEYWORDS

DNA, Ribosomal Spacer
Genes, rRNA
Genetic Variation
Pneumocystis
Pneumonia, Pneumocystis

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