Linked Life Data

17285588

Source:http://linkedlifedata.com/resource/pubmed/id/17285588

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2007-4-23
pubmed:abstractText
Arenicin-1 (AR-1) is a novel antimicrobial peptide that was isolated from coelomocytes of the marine polychaeta lugworm Arenicola marina and shown to contain a single disulfide bond between Cys3 and Cys20, forming an 18-residue ring [Ovchinnikova, T. V. et al., FEBS Lett 2004, 577, 209-214]. To determine the role of this disulfide bond, we synthesized AR-1 (RWCVYAYVRVRGVLVRYRRCW) and its linear derivative, arenicin-1-S (AR-1-S: RWSVYAYVRVRGVLVRYRRSW). Activity assays revealed that AR-1-S is somewhat less active against bacterial cells than AR-1. Both peptides were very hydrophobic, and displayed cytotoxicity against human red blood cells. Analysis of the tertiary structures of AR-1 and AR-1-S by NMR spectroscopy disclosed that AR-1 has two-stranded antiparallel beta-sheet structures with amphipathicity, while AR-1-S displays a random coil structure in DMSO. Our biological data for AR-1 and AR-1-S indicate that the hydrophobic-hydrophilic balance, disulfide bridge, and the amphipathic beta-sheet structure of the peptides play important roles in their biological activities. Elucidation of the structure of AR-1 and its derivative should facilitate the design of novel non-cytotoxic peptide antibiotics with potent antibacterial activities.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0006-3525
pubmed:author
pubmed:issnType
Print
pubmed:volume
88
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
208-16
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Solution structures and biological functions of the antimicrobial peptide, arenicin-1, and its linear derivative.
pubmed:affiliation
Department of Bioscience and Biotechnology, Bio/Molecular Informatics Center, IBST, Konkuk University, Seoul, Korea.
pubmed:publicationType
Journal Article, In Vitro, Research Support, Non-U.S. Gov't