Linked Life Data

17183269

Source:http://linkedlifedata.com/resource/pubmed/id/17183269

Statements in which the resource exists.
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pubmed-article:17183269pubmed:abstractTextWe observe that the time of appearance of cellular compartmentalization correlates with atmospheric oxygen concentration. To explore this correlation, we predict and characterize the topology of all transmembrane proteins in 19 taxa and correlate differences in topology with historical atmospheric oxygen concentrations. Here we show that transmembrane proteins, individually and as a group, were probably selectively excluding oxygen in ancient ancestral taxa, and that this constraint decreased over time when atmospheric oxygen levels rose. As this constraint decreased, the size and number of communication-related transmembrane proteins increased. We suggest the hypothesis that atmospheric oxygen concentrations affected the timing of the evolution of cellular compartmentalization by constraining the size of domains necessary for communication across membranes.lld:pubmed
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pubmed-article:17183269pubmed:articleTitleOxygen content of transmembrane proteins over macroevolutionary time scales.lld:pubmed
pubmed-article:17183269pubmed:affiliationMax Planck Institute for Plant Breeding Research, Carl-von-Linnè-Weg 10, 50829 Köln, Germany. Claudia.Acquisti.1@asu.edulld:pubmed
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