Escherichia coli: Old problem, new pathology

Escherichia coli K-12 F-prime factors, old and new.

Energy sensors for aerotaxis in Escherichia coli: something old, something new.

Energy is a basic requirement for growth of all cells. It has been estimated that during aerobic growth of bacteria on simple carbon sources, approximately 50 grams of ATP are consumed for each gram dry weight of cells produced (1). Energy for ATP synthesis is derived from electron transport through the chemiosmotic scheme proposed by Mitchell (2). During electron transport, protons are expelle...

New phosphoglucose isomerase mutants of Escherichia coli.

The mutants used to show that phosphoglucose isomerase, and glucose itself, are not essential components of Escherichia coli had not been characterized genetically, other than by mapping. We now describe two new pgi mutants, one amber and the other a Mu-phage insertion, presumably both complete inactivation mutations. The new mutations do not give a phenotype markedly different from those descr...

Bronchopulmonary dysplasia: old problem, new presentation.

An old perspective on a new problem

An old perspective on a new problem Adipose tissue (AT) has evolved to be a highly dynamic organ, readily remodeling to meet the demands of an ever-changing metabolic landscape, as illustrated by the rapid changes in adipose depots of rodents undergoing various nutritional stresses. It takes as little as one week of high-fat feeding (HFF) in rodents for adipocytes to become enlarged, storing fo...