Showing papers in "Microbiological Research in 1989"

TL;DR: In this article, a classification for crystal protein genes of Bacillus thuringiensis is presented, based on the insecticidal spectra and the amino acid sequences of the encoded proteins.

TL;DR: An attempt is made to understand how cross-talk between parallel phosphotransfer pathways can provide a global regulatory curcuitry.

TL;DR: This review is an account of the processes that mediate adaptation of bacteria to changes in their osmotic environment.

TL;DR: Urease is a high-molecular-weight, multimeric, nickel-containing enzyme that plays an important role in utilization of environmental nitrogenous compounds and urea-based fertilizers.

TL;DR: The lack of inhibitors specific for one or the other of the two groups of bacteria hampers the determination of their relative roles in nature.

TL;DR: Detailed analyses with recently characterized immunologic and gene probes and new animal models can be expected to provide a basic understanding of what regulates the primary interactions of these viruses with the gastrointestinal tract and the subsequent responses of infected hosts.

TL;DR: The degree of success of a pathogen is dependent upon the status of the host, and biochemical sensors exquisitely designed to measure and respond to such environmental stimuli and accordingly to regulate a cascade of virulence determinants essential for life within the host.

TL;DR: A collection of 182 isogenic strains containing genetically linked antibiotic resistance elements located at approximately 1-min intervals around the Escherichia coli chromosome, designed to be used in a rapid two-step mapping system in E. coli.

TL;DR: Compte rendu des connaissances (133 references) sur le facteur de regulation sigma σ 54 (code par ntrA), importance des proteines activatrices dans l'initiation de la transcription par ce facteur.

TL;DR: Transformation with exogenous deoxyribonucleic acid (DNA) now appears to be possible with all fungal species, or at least all that can be grown in culture, and transformation of fungi with DNA constructs designed for high gene expression and efficient secretion of gene products appears to have great commercial potential.

TL;DR: Many plasmids from gram-positive bacteria replicate via a single-stranded deoxyribonucleic acid (ssDNA) intermediate by a rolling-circle mechanism, which seems to be beneficial for their viability and propagation, but not for their use as cloning vectors.

TL;DR: The potential role of siderophore-mediated systems as virulence determinants in the specific host-bacteria interaction leading to disease is analyzed with respect to the influence of these systems in the expression of other factors, such as toxins, in the bacterial virulence repertoire.

TL;DR: Discussion sur les erreurs faux-sens, les mecanismes de terminaison and de decalages de lecture and les moyens dont dispose la cellule pour controler and s'accommoder de ces erreur.

TL;DR: Unlike most types of cells, yeast cells appear to possess no mechanism for regulating the transcription of individual ribosomal protein genes in response either to a deficiency or an excess of a particular ribosome, causing slow growth.

TL;DR: Rapport et considerations sur les donnees etablies ces 10 dernieres annees concernant l'etat de latence de 6 Herpesvirus humains, en particulier l'Herpex Simplex virus de type 1 (HSV-1) et le virus EBV.

TL;DR: A model involving allosteric activation of adenylate cyclase by phospho-IIIGlc, together with the evidence supporting it, is presented and appears likely that the general process of PTS-catalyzed protein phosphorylation-dephosphorylation will be important to the regulation of numerous bacterial physiological processes, including chemotaxis, intermediary metabolism, gene transcription, and virulence.

TL;DR: A broad host range can result when replication initiation is independent of host proteins, as is found in the priming reaction of RSF1010.

TL;DR: The identification of other GTP-binding proteins in S. cerevisiae with distinct yet essential functions underscores the fundamental importance of G-protein regulatory processes in normal cell physiology.

TL;DR: This review describes the work done in the last several years at the biochemical and molecular levels on the mechanisms involved in the mycelium to yeast phase transition and speculates on possible models of regulation of morphogenesis in dimorphic pathogenic fungi.

TL;DR: Description des processus d'insertion des proteines dans la membrane bacterienne: mecanismes, caracteristiques and comparaisons avec ceux connus chez les eucaryotes.

TL;DR: It is proposed that acquired immunity in murine salmonellosis is a synergistic manifestation of the innate capacity of polymorphs and macrophages to destroy ingested Salmonellae, the activated antibacterial functions of macrophage mediated by cytophilic antibodies, the opsonic and agglutinating actions of antiserum, and the accelerated inflammation associated with delayed hypersensitivity to bacterial antigens.

TL;DR: A review of the early studies with H. ducreyi and the current knowledge of the microbiology of this important human pathogen suggests that it is unrelated to any of the present species of the family Pasteurellaceae.

TL;DR: The inherent difficulties in studying the organization and assembly of R bodies by the obligate endosymbiont kappa, have been alleviated by cloning and expressing genetic determinants for these R bodies (type 51) in Escherichia coli.

TL;DR: L'analyse de ces elements a abouti a de nouvelles donnees sur l'amplification de domaines chromosomiques specifiques, the proteolyse des proteines secretees and le controle de the replication du DNA.