Molecular Biology and Evolution, Vol 13, 798-808, Copyright © 1996 by Society for Molecular Biology and Evolution
NJ Gemmell, PS Western, JM Watson and JA Graves
The platypus mitochondrial control region has been cloned and sequenced.
Comparative analysis of this sequence with the published control region
sequences of several other mammalian species has identified regions of
sequence consensus that are conserved throughout the Mammalia. Regions
predicted to form thermodynamically stable secondary structures in the
platypus are also homologous to such putative structures in other species.
In addition to these conserved structures, the platypus mitochondrial
control region also contains a number of unusual features, including two
regions of repetitive sequence, one of which gives rise to pronounced
length variation between animals. Possible functions for the conserved
structures and a mechanism for the generation of the control region length
variation are proposed with respect to our current understanding of
mitochondrial replication and transcription.
ORIGINAL ARTICLE
Evolution of the mammalian mitochondrial control region--comparisons of control region sequences between monotreme and therian mammals
Department of Genetics and Human Variation, La Trobe University, Australia. njg@mole.bio.cam.ac.uk
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