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Identification of protein-protein interactions often provides insight into protein function, and many cellular processes are performed by stable protein complexes. We used tandem affinity purification to process 4,562 different tagged proteins of the yeast Saccharomyces cerevisiae. Each preparation was analysed by both matrix-assisted laser(More)
Bacterial chemotaxis is widely studied because of its accessibility and because it incorporates processes that are important in a number of sensory systems: signal transduction, excitation, adaptation, and a change in behavior, all in response to stimuli. Quantitative data on the change in behavior are available for this system, and the major biochemical(More)
Parasitic nematodes that cause elephantiasis and river blindness threaten hundreds of millions of people in the developing world. We have sequenced the approximately 90 megabase (Mb) genome of the human filarial parasite Brugia malayi and predict approximately 11,500 protein coding genes in 71 Mb of robustly assembled sequence. Comparative analysis with the(More)
Tapeworms (Cestoda) cause neglected diseases that can be fatal and are difficult to treat, owing to inefficient drugs. Here we present an analysis of tapeworm genome sequences using the human-infective species Echinococcus multilocularis, E. granulosus, Taenia solium and the laboratory model Hymenolepis microstoma as examples. The 115- to 141-megabase(More)
Motile but generally nonchemotatic (che) mutants of Escherichia coli were isolated by a simple screening method. A total of 172 independent mutants were examined, and four genes were defined on the basis of mapping and complemenvestigated by determining their null phenotypes with nonsense or bacteriophage Mu-induced mutations. The cheA and cheB products(More)
proximity. Although the general sequence of events is similar for all of these systems, each pathway exhibits variations on this basic scheme that tailor it to a particular sensory task. The modular design of the two-component paradigm has facilitated the evolutionary construction of a variety of signal transduction circuits, all of which utilize phosphoryl(More)
The CheY protein is the response regulator in bacterial chemotaxis. Phosphorylation of a conserved aspartyl residue induces structural changes that convert the protein from an inactive to an active state. The short half-life of the aspartyl-phosphate has precluded detailed structural analysis of the active protein. Persistent activation of Escherichia coli(More)