RESUMO
In this study, the complete sequence of the 16,527 base pairs Cottus sibiricus altaicus mitochondrial genome was presented. The composition of the whole mitochondrial DNA was 26.93% for A, 26.30% for T, 29.70% for C, 17.07% for G. The genes found in C. sibiricus altaicus and other vertebrate mtDNA were the same, which contained the genes for 13 proteins, 22 transfer RNAs, 2 ribosomal RNAs and 2 main non-coding genes (the control region (CR) and the origin of the light strand replication (O(L)). The sequence showed high economy of organization in that there were few nucleotides between individual genes except for the control region.
Assuntos
Peixes/genética , Genoma Mitocondrial , Animais , Composição de Bases , Sequência de Bases , Dados de Sequência Molecular , Fases de Leitura Aberta , RNA Ribossômico/genética , RNA de Transferência/genéticaRESUMO
As reported, previous studies of Phoxinus phoxinus ujmonensis (Cypriniformes: Cyprinidae) have focused primarily on morphology and ecology. In this study, we cloned and sequenced the complete nucleotide sequence of the mitochondrial genome for P. phoxinus ujmonensis. The mitogenome was 17,738 bp in length, including 13 protein-coding genes, 22 transfer RNA genes, 2 ribosomal RNA genes and 1 control region. All genes were encoded on the heavy strain except for ND6 and eight tRNA genes. The overall base composition of the heavy strain was 28.50% for A, 28.24% for T, 25.32% for C and 17.94% for G. The control region was revealed to contain tandem repeats. The mitogenome data of P. phoxinus ujmonensis should contribute to phylogenetic analysis and studies of population genetics of Phoxinus fishes.
Assuntos
Cipriniformes/genética , Genoma Mitocondrial , Animais , Pareamento de Bases/genética , Sequência de Bases , DNA Mitocondrial/genética , Genes Mitocondriais , Fases de Leitura Aberta/genéticaRESUMO
In this study, we cloned and sequenced the complete mitochondrial genome of Barbatula nuda. The genome was found to be 16,619 bp in size with a mostly conserved structural organization when compared with that of other teleost fish. It contained 37 genes (13 protein-coding genes, 22 transfer RNA genes, and 2 ribosomal RNA genes) and 2 main non-coding regions (the control region and the origin of the light-strand replication). All protein-coding genes are initiated with ATG except for COX 1, which begin with GTG instead. However, the termination codons of 13 protein-coding genes varied with TAA, TA, T or TAG. The complete mitochondrial genome sequence is useful for phylogenetic analysis and studies of population genetics of B. nuda.