Comparison of sea urchin and human mtDNA: evolutionary rearrangement.

AUTOR(ES)

Roberts, J W

RESUMO

Clones of full-length mtDNA have been isolated from a Strongylocentrotus franciscanus recombinant DNA library by screening a cDNA clone of cytochrome oxidase subunit 1 mRNA. Restriction fragment cross-hybridization analysis shows the following difference in gene arrangement between sea urchin and human mtDNA. The 16S rRNA and cytochrome oxidase subunit 1 genes are directly adjacent in sea urchin mtDNA. These two genes are separated in human and other mammalian mtDNAs by the region containing unidentified reading frames 1 and 2. In spite of the difference in gene order, gene polarity appears to have been conserved. We conclude that the difference in gene order reflects a rearrangement that took place in the sea urchin lineage since sea urchins and mammals last shared a common ancestor.

Documentos Relacionados

• Human aging and somatic point mutations in mtDNA: a comparative study of generational differences (grandparents and grandchildren)
• In organello formaldehyde crosslinking of proteins to mtDNA: Identification of bifunctional proteins
• Two distinct, sequence-specific DNA-binding proteins interact independently with the major replication pause region of sea urchin mtDNA.
• Rearrangements of Human Mitochondrial DNA (mtDNA): New Insights into the Regulation of mtDNA Copy Number and Gene Expression
• Compilation of human mtDNA control region sequences.