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Title: Structure and organization of the mitochondrial DNA control region with tandemly repeated sequence in the Amazon ornamental fish
Authors: Terêncio, Maria Leandra
Schneider, Carlos Henrique
Gross, Maria Claudia
Feldberg, Eliana
Porto, Jorge Ivan Rebelo
Keywords: Dna, Mitochondrial
5' Untranslated Region
Dna Sequence
Dna Structure
Genetic Variability
Genome, Mitochondrial
Nannostomus Eques
Nannostomus Unifasciatus
Priority Journal
Promoter Region
Tandemly Repeated Sequence
Variable Number Of Tandem Repeat
Base Sequence
Dna, Mitochondrial
Evolution, Molecular
Minisatellite Repeats
Molecular Sequence Data
Sequence Alignment
Sequence Analysis, Dna
Tandem Repeat Sequences
Nannostomus Unifasciatus
Issue Date: 2013
metadata.dc.publisher.journal: Mitochondrial DNA
metadata.dc.relation.ispartof: Volume 24, Número 1, Pags. 74-82
Abstract: Tandemly repeated sequences are a common feature of vertebrate mitochondrial DNA control regions. However, questions still remain about their mode of evolution and function. To better understand patterns of variation in length and to explore the existence of previously described domain, we have characterized the control region structure of the Amazonian ornamental fish Nannostomus eques and Nannostomus unifasciatus. The control region ranged from 1121 to 1142 bp in length and could be separated into three domains: the domain associated with the extended terminal associated sequences, the central conserved domain, and the conserved sequence blocks domain. In the first domain, we encountered a sequence repeated 10 times in tandem (variable number tandem repeat (VNTR)) that could adopt an "inverted repetitions" type structural conformation. The results suggest that the VNTR pattern encountered in both N. eques and N. unifasciatus is consistent with the prerequisites of the illegitimate elongation model in which the unequal pairing of the chains near the 5′-end of the control region favors the formation of repetitions. © 2021 Informa UK, Ltd.
metadata.dc.identifier.doi: 10.3109/19401736.2012.717934
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