Universal Protein Families and the Functional Content of the Last Universal Common Ancestor Nikos KyrpidesRoss OverbeekChristos Ouzounis Pages: 413 - 423
On the Origin of Operons and Their Possible Role in Evolution Toward Thermophily Nicolas Glansdorff Pages: 432 - 438
DNA Supercoiling and Temperature Adaptation: A Clue to Early Diversification of Life? Purificación López-García Pages: 439 - 452
Respiratory Chains in the Last Common Ancestor of Living Organisms Jose CastresanaDavid Moreira Pages: 453 - 460
The Evolutionary History of Carbamoyltransferases: A Complex Set of Paralogous Genes Was Already Present in the Last Universal Common Ancestor Bernard LabedanAnne BoyenYuan-Fu Zhang Pages: 461 - 473
DNA Repair Systems in Archaea: Mementos from the Last Universal Common Ancestor? Jocelyne DiRuggieroJames R. BrownFrank T. Robb Pages: 474 - 484
Gene Descent, Duplication, and Horizontal Transfer in the Evolution of Glutamyl- and Glutaminyl-tRNA Synthetases James R. BrownW. Ford Doolittle Pages: 485 - 495
The Root of the Tree of Life in the Light of the Covarion Model Philippe LopezPatrick ForterreHervé Philippe Pages: 496 - 508
The Rooting of the Universal Tree of Life Is Not Reliable Hervé PhilippePatrick Forterre Pages: 509 - 523
The Archaea Monophyly Issue: A Phylogeny of Translational Elongation Factor G(2) Sequences Inferred from an Optimized Selection of Alignment Positions Piero CammaranoRoberta CretiPeter Palm Pages: 524 - 537
