For over 100 years, endosymbiotic theories have figured in thoughts about the differences
between prokaryotic and eukaryotic cells. More than 20 different versions of endosymbiotic …

The presence of shared conserved insertion or deletions (indels) in protein sequences is a
special type of signature sequence that shows considerable promise for phylogenetic …

During evolution, there have been several major changes in the way that genetic information
is organized and transmitted from one generation to the next. These transitions include the …

A new hypothesis for the origin of eukaryotic cells is proposed, based on the comparative
biochemistry of energy metabolism. Eukaryotes are suggested to have arisen through …

The evolutionary relationships of proteobacteria, which comprise the largest and
phenotypically most diverse division among prokaryotes, are examined based on the …

Cell physiology in the weevil Sitophilus oryzae is coordinated by three integrated genomes:
nuclear, mitochondrial, and the “S. oryzae principal endosymbiont”(SOPE). SOPE, a …

Genomes hold within them the record of the evolution of life on Earth. But genome fusions
and horizontal gene transfer seem to have obscured sufficiently the gene sequence record …

The organisation of cells of the planctomycete species Pirellula marina, Isosphaera pallida,
Gemmata obscuriglobus, Planctomyces maris and" Candidatus Brocadia anammoxidans" …

Since the late 1970s, determining the phylogenetic relationships among the contemporary
domains of life, the Archaea (archaebacteria), Bacteria (eubacteria), and Eucarya …

Background Although the origin of the eukaryotic cell has long been recognized as the
single most profound change in cellular organization during the evolution of life on earth …