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Database: PubMed
Entry: 6339477
LinkDB: 6339477
Original site: 6339477 
PMID:
     6339477
Authors:
     Smith MW, Neidhardt FC.
Title:
     Proteins induced by aerobiosis in Escherichia coli.
Journal:
     J Bacteriol. 1983 Apr;154(1):344-50. doi: 10.1128/jb.154.1.344-350.1983.
Abstract:
     The role of protein induction and repression in the adaptation of Escherichia 
     coli to changes in the supply of oxygen and other electron acceptors is only 
     poorly understood. We have studied the changes in cellular protein composition 
     associated with this adaptation by measuring the levels of 170 individual 
     polypeptides produced during aerobic or anaerobic growth of E. coli, with and 
     without nitrate. Nineteen polypeptides had levels highest during aerobic growth. 
     These proteins include the enzymes of the pyruvate dehydrogenase complex, several 
     tricarboxylic acid cycle enzymes, superoxide dismutase, and 
     tetrahydropteroyltriglutamate transmethylase. The other aerobiosis-induced 
     proteins have not been identified. These polypeptides are major cellular proteins 
     during aerobic growth and display several different patterns of regulation in 
     response to medium composition. Induction ratios for oxygen ranged from 2.2 to 
     11.2, with one exceptional member, superoxide dismutase, increasing 71-fold with 
     aeration. Most of the proteins were also induced by nitrate during anaerobic 
     growth. The time course of induction after shifts in oxygen supply revealed 
     similarities in response among proteins of related function or metabolic 
     regulation class. These results are discussed in relation to previously reported 
     information on the identified aerobiosis-induced proteins.

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