Comparative analysis of the mitochondrial genomes of Chlamydomonas eugametos and Chlamydomonas moewusii

1992 ◽  
Vol 21 (3) ◽  
pp. 197-202 ◽  
Author(s):  
Eileen M. Denovan-Wright ◽  
Robert W. Lee
Keyword(s):  
Comparative Analysis ◽  
Mitochondrial Genomes ◽  
Chlamydomonas Eugametos ◽  
Chlamydomonas Moewusii

Comparative analysis of 11 Brassicales mitochondrial genomes and the mitochondrial transcriptome of Brassica oleracea

Mitochondrion ◽  
2014 ◽  
Vol 19 ◽  
pp. 135-143 ◽  
Author(s):  
Felix Grewe ◽  
Patrick P. Edger ◽  
Ido Keren ◽  
Laure Sultan ◽  
J. Chris Pires ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Brassica Oleracea ◽  
Mitochondrial Genomes

scholarly journals Comparative analysis of the complete mitochondrial genomes of Aspergillus niger mtDNA type 1a and Aspergillus tubingensis mtDNA type 2b

2008 ◽  
Vol 281 (1) ◽  
pp. 51-57 ◽  
Author(s):  
ÁKos Juhász ◽  
Ilona Pfeiffer ◽  
Andrea Keszthelyi ◽  
Judit Kucsera ◽  
Csaba Vágvölgyi ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Aspergillus Niger ◽  
Mitochondrial Genomes ◽  
Aspergillus Tubingensis ◽  
Complete Mitochondrial Genomes

scholarly journals Comparative analysis of mitochondrial genomes in different species reveals the evolution of G-quadruplexes

2021 ◽  
Author(s):  
Hiroshi Sugiyama ◽  
Vinodh Sahayasheela ◽  
Zutao Yu ◽  
Ganesh Pandian
Keyword(s):  
Gene Expression ◽  
Mitochondrial Dna ◽  
Comparative Analysis ◽  
Lower Order ◽  
Genome Stability ◽  
Mitochondrial Genomes ◽  
Cellular Functions ◽  
Higher Eukaryotes ◽  
Heavy Strand ◽  
Light Strand

Abstract G-quadruplexes (G4s) are noncanonical structures that can form in the genomes of a range of organisms and are known to play various roles in cellular function. G4s can also form in mitochondrial DNA (mtDNA) because of their high guanine content, and these G4s may play roles in regulating gene expression, DNA replication, and genome stability. However, little is known regarding the evolution and dissemination of G4s in mitochondria. Here we analyzed the potential G4-forming sequences in mtDNA of 16 species from various families and demonstrated that the heavy strand of mtDNA of higher-order organisms contained higher levels of G4 regions than that of lower-order organisms. Analysis of the codons in the light strand revealed enrichment of guanine/cytosine-rich regions in higher eukaryotes and of adenine/thymidine-rich regions in lower-order organisms. Our study showed the diversity of G4s in species ranging from lower to higher orders. In particular, mammals such as humans, chimpanzees, and monkeys display a greater number of G4s than lower-order organisms. These potentially play a role in a range of cellular functions and assist in the evolution of higher organisms.

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