rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
23
|
pubmed:dateCreated |
2003-10-30
|
pubmed:abstractText |
Using an alanine-scanning method, we have found that the antibacterial and hemolytic activities of the amphipathic cyclic decapeptide antibiotic tyrocidine A depend on different structural components. Single substitution of glutamine-6 of the natural product with a cationic amino acid results in a therapeutic index enhancement of up to 140-fold. Successful dissociation of the two intimately associated properties should enable discovery of novel analogues with both high bacterial selectivity and antibacterial potency to counter microbial resistance.
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Nov
|
pubmed:issn |
0022-2623
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
6
|
pubmed:volume |
46
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
4830-3
|
pubmed:dateRevised |
2006-11-15
|
pubmed:meshHeading |
pubmed-meshheading:14584933-Amino Acid Substitution,
pubmed-meshheading:14584933-Anti-Bacterial Agents,
pubmed-meshheading:14584933-Bacillus subtilis,
pubmed-meshheading:14584933-Chromatography, High Pressure Liquid,
pubmed-meshheading:14584933-Drug Resistance, Bacterial,
pubmed-meshheading:14584933-Hemolysis,
pubmed-meshheading:14584933-Humans,
pubmed-meshheading:14584933-Magnetic Resonance Spectroscopy,
pubmed-meshheading:14584933-Microbial Sensitivity Tests,
pubmed-meshheading:14584933-Peptides, Cyclic,
pubmed-meshheading:14584933-Protein Structure, Secondary,
pubmed-meshheading:14584933-Spectrometry, Mass, Fast Atom Bombardment,
pubmed-meshheading:14584933-Structure-Activity Relationship,
pubmed-meshheading:14584933-Tyrocidine
|
pubmed:year |
2003
|
pubmed:articleTitle |
Dissociation of antibacterial and hemolytic activities of an amphipathic peptide antibiotic.
|
pubmed:affiliation |
Department of Chemistry and Biotechnology Research Institute, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China. chguo@ust.hk
|
pubmed:publicationType |
Journal Article,
In Vitro,
Research Support, Non-U.S. Gov't
|