RT Journal
A1 Schmid, Amy K.
A1 Reiss, David J.
A1 Kaur, Amardeep
A1 Pan, Min
A1 King, Nichole
A1 Van, Phu T.
A1 Hohmann, Laura
A1 Martin, Daniel B.
A1 Baliga, Nitin S.
T1 The anatomy of microbial cell state transitions in response to oxygen
JF Genome Research 
JO Genome Research 
YR 2007 
FD October 01 
VO 17 
IS 10 
SP 000 
OP 000 
DO 10.1101/gr.6728007 
UL http://genome.cshlp.org/content/early/2007/09/04/gr.6728007.abstract 
AB Adjustment of physiology in response to changes in oxygen availability is critical for the survival of all organisms. However, the chronology of events and the regulatory processes that determine how and when changes in environmental oxygen tension result in an appropriate cellular response is not well understood at a systems level. Therefore, transcriptome, proteome, ATP, and growth changes were analyzed in a halophilic archaeon to generate a temporal model that describes the cellular events that drive the transition between the organism’s two opposing cell states of anoxic quiescence and aerobic growth. According to this model, upon oxygen influx, an initial burst of protein synthesis precedes ATP and transcription induction, rapidly driving the cell out of anoxic quiescence, culminating in the resumption of growth. This model also suggests that quiescent cells appear to remain actively poised for energy production from a variety of different sources. Dynamic temporal analysis of relationships between transcription and translation of key genes suggests several important mechanisms for cellular sustenance under anoxia as well as specific instances of post-transcriptional regulation.