Zhongguo ji sheng chong xue yu ji sheng chong bing za zhi = Chinese journal of parasitology & parasitic diseases · 2009
[Complete mitochondrial genome sequence of Oncomelania hupensis (Gastropoda: Rissooidea)].
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Li Shi-Zhu, Wang Yi-Xiu, Liu Qin, Lv Shan, Wang Qiang, Wu Ying, Zhang Yi, Zhou Xiao-Nong
Аннотация
OBJECTIVE: To sequence and analyze the complete nucleotide sequence of the mitochondrial genome of Oncomelania hupensis.
METHODS: Four long fragments were amplified by long PCR using the primers designed based on mtDNA-CO I, Cytb, 16S rRNA and CO III gene sequences, and sequenced by conserved primer-walking.
RESULTS: The mitochondrial genome (GenBank accession no. FJ997214) was a circular molecule of 15 182 bp with a total A+T content of 67.32%, and contained 13 protein-coding genes, 2 ribosomal RNA genes, 22 tRNA genes, and an A+T-rich region of 72 bp. All 13 protein-coding genes of the O. hupensis mtDNA used ATG as start codon. Canonical TAA and TAG termination codons were found in 12 protein-coding genes, and the remaining one (ND1) had an incomplete termination codon (T). Two short gene overlaps were found with a length of 4 bp and 7 bp, respectively. The length of 21 total intergenic region of mtDNA was 145bp ranging from 1-30 bp. A total of 22 transferring RNA were found, all of which were typical cloverleaf structure except for two tRNA(Ser), one tRNA(Gln) and one tRNA(Ile).
CONCLUSION: The complete sequence of O. hupensis mitochondrial genome has been determined.
METHODS: Four long fragments were amplified by long PCR using the primers designed based on mtDNA-CO I, Cytb, 16S rRNA and CO III gene sequences, and sequenced by conserved primer-walking.
RESULTS: The mitochondrial genome (GenBank accession no. FJ997214) was a circular molecule of 15 182 bp with a total A+T content of 67.32%, and contained 13 protein-coding genes, 2 ribosomal RNA genes, 22 tRNA genes, and an A+T-rich region of 72 bp. All 13 protein-coding genes of the O. hupensis mtDNA used ATG as start codon. Canonical TAA and TAG termination codons were found in 12 protein-coding genes, and the remaining one (ND1) had an incomplete termination codon (T). Two short gene overlaps were found with a length of 4 bp and 7 bp, respectively. The length of 21 total intergenic region of mtDNA was 145bp ranging from 1-30 bp. A total of 22 transferring RNA were found, all of which were typical cloverleaf structure except for two tRNA(Ser), one tRNA(Gln) and one tRNA(Ile).
CONCLUSION: The complete sequence of O. hupensis mitochondrial genome has been determined.