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BACTERIOCINE [6 records]

Record 1 2012-10-25

English

Subject field(s)
  • Biotechnology
  • Immunology
CONT

The production of ribosomally synthesized peptide antibiotics can be considered a successful strategy for mediating bacterial antagonistic relationships, as judged by its widespread occurrence among bacteria. These antibiotics are produced by gram-positive bacteria as well as by gram-negative bacteria and appear to share some features, such as their relatively small size and their mode of secretion into the extracellular medium, which is dependent on dedicated export mechanisms. Many of these antibiotics are synthesized as peptide precursors which are subsequently modified by other proteins whose determinants are linked to the antibiotic structural gene. Examples of modified peptide antibiotics are the lantibiotics and most microcins.

French

Domaine(s)
  • Biotechnologie
  • Immunologie
CONT

La nisine est un peptide produit par synthèse ribosomique et qui subit une modification par post-traduction enzymatique donnant la forme mature de la bactériocine nécessaire pour son activité biologique.

Spanish

Campo(s) temático(s)
  • Biotecnología
  • Inmunología
Save record 1

Record 2 2012-10-25

English

Subject field(s)
  • Biotechnology
  • Immunology
  • Medication
CONT

Peptide antibiotics fall into two broad classes whose evolutionary biology is very different. The first is a large and heterogeneous category of peptides that are synthesized on very large, modular enzyme complexes by bacteria and fungi. ... The second category is quite different. It comprises linear peptides consisting almost entirely of conventional amino acid residues that are produced by all major kinds of organisms (including microbes). These are translated using ribosomes in the usual fashion of protein synthesis, and we therefore call them RAMPs, for "ribosomally synthesized antimicrobial peptides" to distinguish them from the non-RAMPs of the first category.

French

Domaine(s)
  • Biotechnologie
  • Immunologie
  • Médicaments
OBS

La nisine est un peptide produit par synthèse ribosomique et qui subit une modification par post-traduction enzymatique donnant la forme mature de la bactériocine nécessaire pour son activité biologique.

OBS

peptide antimicrobien produit par synthèse ribosomique : expression proposée par analogie avec «peptide produit par synthèse ribosomique».

Spanish

Campo(s) temático(s)
  • Biotecnología
  • Inmunología
  • Medicamentos
OBS

Las bacteriocinas son péptidos antimicrobianos de síntesis ribosomal.

Save record 2

Record 3 2009-02-16

English

Subject field(s)
  • Biochemistry
  • Microbiology and Parasitology
DEF

Proteins which are produced by certain bacteria possessing bacteriocinogens, and which exert a lethal effect on closely related bacteria.

OBS

In general, bacteriocins have a narrower range of activity than antibiotics and are more potent.

French

Domaine(s)
  • Biochimie
  • Microbiologie et parasitologie

Spanish

Campo(s) temático(s)
  • Bioquímica
  • Microbiología y parasitología
Save record 3

Record 4 2006-01-31

English

Subject field(s)
  • Biotechnology
  • Immunology
CONT

Combinatorial libraries of non-biological polymers and drug-like peptides could in principle be synthesized from unnatural amino acids by exploiting the broad substrate specificity of the ribosome. The ribosomal synthesis of such libraries would allow rare functional molecules to be identified using technologies developed for the in vitro selection of peptides and proteins.

French

Domaine(s)
  • Biotechnologie
  • Immunologie
CONT

Le terme de bactériocine a, initialement, été utilisé pour les protéines antimicrobiennes analogues à la colicine d’Escherichia coli. Il est maintenant utilisé pour tous les composés antimicrobiens à synthèse ribosomique.

PHR

composé antimicrobien, bactériocine à synthèse ribosomique.

Spanish

Save record 4

Record 5 2003-06-23

English

Subject field(s)
  • Immunology
DEF

A suspension of killed or attenuated bacteria injected into a living body to stimulate the development of immunity to the same kind of bacteria.

French

Domaine(s)
  • Immunologie
DEF

Bacteriocine : Nom générique des antibiotiques élaborés par des cultures bactériennes soumises à certains traitements(irradiation par les rayons ultraviolets, abaissement de la température, adjonction de certaines substances chimiques) et qui, absorbés par des bactéries appartenant à d’autres souches de la même espèce ou d’une espèce voisine, exercent sur elles une action létale.(Manuila, vol. 1, p. 370).

OBS

Le vaccin bactérien peut être ou bien vivant (mais atténué), ou bien inactivé, comme dans la plupart des cas.

OBS

«bactérine» : Terminologie utilisée par Agriculture Canada.

Key term(s)
  • vaccin microbien

Spanish

Campo(s) temático(s)
  • Inmunología
Save record 5

Record 6 1999-09-16

English

Subject field(s)
  • Water Treatment (Water Supply)
  • Wastewater Treatment
DEF

The bacterial agglomeration of colloidal and finely divided suspended matter after coagulation by gentle stirring by mechanical or hydraulic means.

French

Domaine(s)
  • Traitement des eaux
  • Traitement des eaux usées
OBS

bactériofloculation : proposition sous toutes réserves formée sur le modèle de «bactériocine », «bactériolyse », etc.

Spanish

Save record 6

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