Peptide Bacteriocins - Structure Activity Relationships
نویسندگان
چکیده
منابع مشابه
Probing structure-activity relationships in bactericidal peptide betapep-25.
Cationic peptides, known to disrupt bacterial membranes, are being developed as promising agents for therapeutic intervention against infectious disease. In the present study, we investigate structure-activity relationships in the bacterial membrane disruptor betapep-25, a peptide 33-mer. For insight into which amino acid residues are functionally important, we synthesized alanine-scanning vari...
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Piscidin 4, an antimicrobial peptide recently isolated from mast cells of hybrid striped bass (Morone chrysops female × Morone saxatilis male), is unusual in that it is twice as long (44 amino acids) as the typical members of the piscidin family. We previously showed that native piscidin 4 had a modified amino acid at position 20, but synthetic piscidin 4 (having an unmodified Trp at position 2...
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Research works proposed that radical scavenging activity of flavonoids is due to ring B, andthe remaining part of the molecule can be disregarded. Thus the objective of this work is toobserve whether hydroxytoluenes account the radical scavenging activity of flavonoid and toestablish structural requirements for their activity (as they showed appreciable activity) andelucidate a comprehensive me...
متن کاملQnrS1 structure-activity relationships.
OBJECTIVES Loop B is important for low-level quinolone resistance conferred by Qnr proteins. The role of individual amino acids within QnrS1 loop B in quinolone resistance and gyrase protection was assessed. METHODS qnrS1 and 11 qnrS1 alleles with site-directed Ala mutations in loop B were expressed in Escherichia coli BL21(DE3) and proteins were purified by affinity chromatography. Ciproflox...
متن کاملStructure-activity relationships in the peptide antibiotic nisin: antibacterial activity of fragments of nisin.
The post-translationally modified peptide antibiotic nisin has been cleaved by a number of proteases and the fragments produced purified, characterised chemically, and assayed for activity in inhibiting the growth of Lactococcus lactis MG1614 and Micrococcus luteus NCDO8166. These results provide information on the importance of different parts of the nisin molecule for its growth-inhibition ac...
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ژورنال
عنوان ژورنال: Current Topics in Medicinal Chemistry
سال: 2015
ISSN: 1568-0266
DOI: 10.2174/1568026615666150812121103