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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
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pubmed:dateCreated |
1997-4-29
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pubmed:databankReference | |
pubmed:abstractText |
To determine the occurrence of conserved domains of presumed functional selection, a genomic restriction analysis was carried out in the region surrounding a transcription start point (tsp) from the rRNA cistron in T. cruzi. The transcribed spacer was found highly conserved among several isolates, whereas at 146 bp upstream from the tsp a highly polymorphic pattern was evidenced with a probe that contains sequences of a repetitive element (172 bp). Both genomic and chromosomal hybridizations indicated the linkage of the repetitive element to coding regions of the rRNA cistron. This represents the first example of a repetitive element not interspersed throughout the genome of T. cruzi, and strongly suggests that a functional role is being selected.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Dec
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pubmed:issn |
0001-706X
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
16
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pubmed:volume |
62
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
163-70
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pubmed:dateRevised |
2010-11-18
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pubmed:meshHeading |
pubmed-meshheading:9025984-Animals,
pubmed-meshheading:9025984-Blotting, Southern,
pubmed-meshheading:9025984-DNA, Protozoan,
pubmed-meshheading:9025984-DNA, Ribosomal,
pubmed-meshheading:9025984-DNA Probes,
pubmed-meshheading:9025984-Genetic Linkage,
pubmed-meshheading:9025984-Molecular Sequence Data,
pubmed-meshheading:9025984-Nucleic Acid Hybridization,
pubmed-meshheading:9025984-Polymorphism, Restriction Fragment Length,
pubmed-meshheading:9025984-RNA, Ribosomal,
pubmed-meshheading:9025984-Repetitive Sequences, Nucleic Acid,
pubmed-meshheading:9025984-Restriction Mapping,
pubmed-meshheading:9025984-Transcription, Genetic,
pubmed-meshheading:9025984-Trypanosoma cruzi
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pubmed:year |
1996
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pubmed:articleTitle |
Trypanosoma cruzi rRNA genes: a repeated element from the non-transcribed spacer is locus specific.
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pubmed:affiliation |
Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México D.F., México.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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