Now showing items 91-100 of 173
CXC chemokines mechanism of action in regulating tumor angiogenesis
(Kluwer Academic Publishers; Springer Science+Business Media, 1998-03)
The CXC chemokines have recently been identified as a family of molecules which can regulate angiogenesis. Members of this family which contain the amino acid motif Glu–Leu–Arg in their amino terminus (ELR + ) act as ...
Metabolic regulation of aminoacyl-tRNA synthetase formation in bacteria
(Elsevier, 1972-10-17)
The cellular levels of several aminoacyl-tRNA synthetases vary with the rate of growth of , and of , in different media. Over a seven-fold range in growth rate the levels of arginyl- and of valyl-tRNA synthetase change ...
Membrane localization of the ToxR winged-helix domain is required for TcpP-mediated virulence gene activation in Vibrio cholerae
(Blackwell Science Ltd, 2003-03)
ToxR is a bitopic membrane protein that controls virulence gene expression in Vibrio cholerae . Its cytoplasmic domain is homologous to the winged helix–turn–helix (‘winged helix’) DNA-binding/transcription activation ...
Strategies for representing metabolic pathways within biochemical systems theory: Reversible pathways
(Elsevier, 1989-06)
The search for systematic methods to deal with the integrated behavior of complex biochemical systems has over the past two decades led to the proposal of several theories of biochemical systems. Among the most promising ...
Transcription of σ 54 -dependent but not σ 28 -dependent flagellar genes in Campylobacter jejuni is associated with formation of the flagellar secretory apparatus
(Blackwell Science Ltd, 2003-10)
We performed a genetic analysis of flagellar regulation in Campylobacter jejuni , from which we elucidated key portions of the flagellar transcriptional cascade in this bacterium. For this study, we developed a reporter ...
Construction of Enterococcus faecalis pAD1 miniplasmids: Identification of a minimal pheromone response regulatory region and evaluation of a novel pheromone-dependent growth inhibition
(Elsevier, 1989-09)
Several pAD1 miniplasmids were constructed that consisted of all or a portion of the pAD1 EcoRI B fragment with pheromone-inducible "E region" lacZ transcriptional fusions. Miniplasmids containing the entire EcoRI B fragment ...
Finding multiple roots of nonlinear algebraic equations using s-system methodology
(Elsevier, 1993-05)
The solution of nonlinear algebraic equations is a well-known problem in many fields of science and engineering. Several types of numerical methods exist, each with their advantages and disadvantages. S-system methodology ...
Efficient and quantitative incorporation of diaminopimelic acid into the peptidoglycan of Salmonella typhimurium
(Elsevier, 1986-09)
Diaminopimelic acid is incorporated into the peptidoglycan of Salmonella typhimurium in an efficient and quantitative manner. The amount of DAP incorporated is similar to the number of molecules estimated to exist in the ...
Cooperative effects of bacterial mutations affecting [lambda] N gene expression : I. Isolation and characterization of a nusB mutant
(Elsevier, 1976-08)
We report the isolation and characterization of an Escherichia coli mutant which limits the growth of phage [lambda] by inhibiting the expression of the N gene regulatory function. The mutation involved maps near minute ...