alexa The Nuclear Compartment Commonality Hypothesis, Enuclea
ISSN: 2332-2519

Journal of Astrobiology & Outreach
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Opinion Article

The Nuclear Compartment Commonality Hypothesis, Enucleation and the Evolution of the Bacteria and Eukarya

James T Staley*
Department of Microbiology and Astrobiology Program, University of Washington, Seattle, WA 98195, USA
Corresponding Author : James T Staley
Department of Microbiology and Astrobiology Program
University of Washington
Seattle, WA 98195, USA
E-mail: [email protected]
Received September 18, 2013; Accepted October 28, 2013; Published October 31, 2013
Citation: Staley JT (2013) The Nuclear Compartment Commonality Hypothesis, Enucleation and the Evolution of the Bacteria and Eukarya. Astrobiol Outreach 1:105. doi:10.4172/2332-2519.1000105
Copyright: © 2013 Staley JT. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

The nuclear compartment commonality (NuCom) hypothesis posits that the Bacteria Domain and Eukarya- Archaea Domains share a major commonality in the process of DNA replication. The ancestors of both types of organisms used a similar or perhaps identical nuclear envelope platform and nuclear compartment to carry out DNA replication. The effects of this are still seen in the Bacteria and Eukarya all of which have retained membranes with ester-linked, fatty acid lipids. These genes were lost in a process of reductive evolution, termed Enucleation, resulting in the formation of the Archaea from the Eukarya. Some of the nucleated Bacterial phyla such as the Planctomycetes and Verrucomicrobia likely underwent Enucleation giving rise to the more typical Bacterial phyla that lack nuclei. For example, the Verrucomicrobia may be ancestral to the Proteobacteria. The NuCom hypothesis also provides an alternative explanation to opposing views regarding the importance of the Bacteria in the evolution of the Eukarya, namely that these two Domains share a hereditary commonality in their original nuclear envelopes.

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