Abstract:
:A continuous 10.1kb fragment of the Cephalothrix rufifrons (Nemertea, Palaeonemertea) mitochondrial genome was sequenced and characterized to further assess organization of protostome mitochondrial genomes and evaluate the phylogenetic potential of gene arrangement and amino acid characters. The genome is A-T rich (72%), and this biased base composition is partly reflected in codon usage. Inferred tRNA secondary structures are typical of those reported for other metazoan mitochondrial DNAs. The arrangement of the 26 genes contained in the fragment exhibits marked similarity to those of many protostome taxa, most notably molluscs with highly conserved arrangements and a phoronid. Separate and simultaneous phylogenetic analyses of inferred amino acid sequences and gene adjacencies place the nemertean within the protostomes among coelomate lophotrochozoan taxa, but do not find a well-supported sister taxon link.
journal_name
Mol Phylogenet Evoljournal_title
Molecular phylogenetics and evolutionauthors
Turbeville JM,Smith DMdoi
10.1016/j.ympev.2006.10.025subject
Has Abstractpub_date
2007-06-01 00:00:00pages
1056-65issue
3eissn
1055-7903issn
1095-9513pii
S1055-7903(06)00425-8journal_volume
43pub_type
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