1d9p: Difference between revisions
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[[ | ==SOLUTION STRUCTURE OF CECROPIN A(1-8)-MAGAININ 2(1-12) HYBRID PEPTIDE ANALOGUE(P4)== | ||
<StructureSection load='1d9p' size='340' side='right' caption='[[1d9p]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1d9p]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Hyalophora_cecropia Hyalophora cecropia]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1D9P OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1D9P FirstGlance]. <br> | |||
</td></tr><tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=NH2:AMINO+GROUP'>NH2</scene></td></tr> | |||
<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1d9j|1d9j]], [[1d9l|1d9l]], [[1d9m|1d9m]], [[1d9o|1d9o]]</td></tr> | |||
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1d9p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1d9p OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1d9p RCSB], [http://www.ebi.ac.uk/pdbsum/1d9p PDBsum]</span></td></tr> | |||
<table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
In order to elucidate the structure-antibiotic activity relationships of the peptides, the three-dimensional structures of two hybrid peptides, CA(1-8) - MA(1-12) and CA(1-8) - ME(1-12) in trifluoroethanol-containing aqueous solution were investigated by NMR spectroscopy. Both CA(1-8) - MA(1-12) and CA(1-8) - ME(1-12) have strong antibacterial activity but only CA(1-8) - ME(1-12) has hemolytic activity against human erythrocytes. CA(1-8) - MA(1-12) has a hydrophobic 310-helix of only two turns combined with one short helix in the N-terminus with a flexible hinge section in between. CA(1-8) - MA(1-12) has a severely bent structure in the middle of the peptide. These structural features as well as the low hydrophobicity of CA(1-8) - MA(1-12) seem to be crucial for the selective lysis against the membrane of prokaryotic cells. CA(1-8) - ME(1-12) has an alpha-helical structure of about three turns in the melittin domain and a flexible structure with one turn in the cecropin domain connected with a flexible hinge section in between, and these might be the structural features required for membrane disruption against prokaryotic and eukaryotic cells. The central hinge region (Gly9-Ile10-Gly11) in an amphipathic antibacterial peptide is considered to play an important role in providing the conformational flexibility required for ion channel formation of the C-terminal hydrophobic alpha-helix on cell membrane. | |||
NMR structural characterization of cecropin A(1-8) - magainin 2(1-12) and cecropin A (1-8) - melittin (1-12) hybrid peptides.,Oh D, Shin SY, Kang JH, Hahm KS, Kim KL, Kim Y J Pept Res. 1999 May;53(5):578-89. PMID:10424354<ref>PMID:10424354</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
== | |||
< | |||
[[Category: Hyalophora cecropia]] | [[Category: Hyalophora cecropia]] | ||
[[Category: Kim, Y.]] | [[Category: Kim, Y.]] | ||
Revision as of 09:27, 4 September 2014
SOLUTION STRUCTURE OF CECROPIN A(1-8)-MAGAININ 2(1-12) HYBRID PEPTIDE ANALOGUE(P4)SOLUTION STRUCTURE OF CECROPIN A(1-8)-MAGAININ 2(1-12) HYBRID PEPTIDE ANALOGUE(P4)
Structural highlights
Publication Abstract from PubMedIn order to elucidate the structure-antibiotic activity relationships of the peptides, the three-dimensional structures of two hybrid peptides, CA(1-8) - MA(1-12) and CA(1-8) - ME(1-12) in trifluoroethanol-containing aqueous solution were investigated by NMR spectroscopy. Both CA(1-8) - MA(1-12) and CA(1-8) - ME(1-12) have strong antibacterial activity but only CA(1-8) - ME(1-12) has hemolytic activity against human erythrocytes. CA(1-8) - MA(1-12) has a hydrophobic 310-helix of only two turns combined with one short helix in the N-terminus with a flexible hinge section in between. CA(1-8) - MA(1-12) has a severely bent structure in the middle of the peptide. These structural features as well as the low hydrophobicity of CA(1-8) - MA(1-12) seem to be crucial for the selective lysis against the membrane of prokaryotic cells. CA(1-8) - ME(1-12) has an alpha-helical structure of about three turns in the melittin domain and a flexible structure with one turn in the cecropin domain connected with a flexible hinge section in between, and these might be the structural features required for membrane disruption against prokaryotic and eukaryotic cells. The central hinge region (Gly9-Ile10-Gly11) in an amphipathic antibacterial peptide is considered to play an important role in providing the conformational flexibility required for ion channel formation of the C-terminal hydrophobic alpha-helix on cell membrane. NMR structural characterization of cecropin A(1-8) - magainin 2(1-12) and cecropin A (1-8) - melittin (1-12) hybrid peptides.,Oh D, Shin SY, Kang JH, Hahm KS, Kim KL, Kim Y J Pept Res. 1999 May;53(5):578-89. PMID:10424354[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References |
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