منابع مشابه
Peptides and Bacterial Growth
Lactobacillus casei grows in the absence of vitamin Ba, provided that D-alanine and an unidentified peptide are added to a medium complete in other nutrients (1, 2). A partial hydrolysate of protein contained several chromatographically distinct fractions that possessed this “peptide factor” activity (3). It appeared likely that a single amino acid linked in a variety of combinations was respon...
متن کاملInhibition of bacterial growth by leucine peptides.
In previous reports (I, 2), data were presented on the growth response of a leucineless mutant (strain 679-680)’ of Escherichia coli strain K-12 to various L-leucine peptides. Measurement of the extent of bacterial growth after 24 hours incubation showed that, at low concentrations, the peptides were almost as effective in the stimulation of growth as was L-leucine; at high concentrations, howe...
متن کاملNovel Synthetic Amino Acids and Peptides as Bacterial Growth Inhibitors
The influence of novel synthetic amino acids and peptides on the growth of bacteria included in test culture collection has been studied. The compounds were revealed to inhibit the growth of all the strains included in collection. Some compounds demonstrated antibacterial activity in relation to antibiotic-resistant E.coli strains, others demonstrated the specificity in relation to particular s...
متن کاملBacterial Peptides as Immunomodulators
Mucosal surfaces are habitats for the physiological microflora and are closely related to the mucosal immune compartment (mucosa-associated lymphoid tissue, MALT). Recently, considerable evidence has been accumulated showing that defined members of the physiological microflora express/liberate low molecular weight substances (peptides) which apparently are essential for the adequate immune resp...
متن کاملCloning and Expression of Two New Recombinant Antimicrobial Dermaseptin B1 Peptides in Tobacco to Control the Growth of Human Bacterial Pathogens
Background and purpose: Rapid emergence of traditional antibiotic-resistant pathogens is one of the most important global challenges in medical sciences. To this end, substitution of current antibiotics with strong antimicrobial peptides could be of great benefit. Materials and methods: In this study, the DNA sequence encoding dermaseptin B1 (DrsB1) antimicrobial peptide derived from Phyllomed...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1952
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)55634-9