2mdb: Difference between revisions
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<table><tr><td colspan='2'>[[2mdb]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2MDB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2MDB FirstGlance]. <br> | <table><tr><td colspan='2'>[[2mdb]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2MDB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2MDB FirstGlance]. <br> | ||
</td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=NH2:AMINO+GROUP'>NH2</scene></td></tr> | </td></tr><tr id='NonStdRes'><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 id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2mdb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2mdb OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2mdb RCSB], [http://www.ebi.ac.uk/pdbsum/2mdb PDBsum]</span></td></tr> | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2mdb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2mdb OCA], [http://pdbe.org/2mdb PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2mdb RCSB], [http://www.ebi.ac.uk/pdbsum/2mdb PDBsum]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | </div> | ||
<div class="pdbe-citations 2mdb" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Tachyplesin I 3D structures|Tachyplesin I 3D structures]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
Revision as of 10:12, 11 September 2015
Tachyplesin I in the presence of lipopolysaccharideTachyplesin I in the presence of lipopolysaccharide
Structural highlights
Function[TAC1_TACTR] Significantly inhibits the growth of Gram-negative and Gram-positive bacteria. Publication Abstract from PubMedLipopolysaccharide (LPS) is a major constituent of the outer membrane of Gram-negative bacteria and is the very first site of interactions with antimicrobial peptides (AMPs). In order to gain better insight into the interaction between LPS and AMPs, we determined the structure of tachyplesin I (TP I), an antimicrobial peptide derived from horseshoe crab, in its bound state with LPS and proposed the complex structure of TP I and LPS using a docking program. CD and NMR measurements revealed that binding to LPS slightly extends the two beta-strands of TP I and stabilizes the whole structure of TP I. The fluorescence wavelength of an intrinsic tryptophan of TP I and fluorescence quenching in the presence or absence of LPS indicated that a tryptophan residue is incorporated into the hydrophobic environment of LPS. Finally, we succeeded in proposing a structural model for the complex of TP I and LPS by using a docking program. The calculated model structure suggested that the cationic residues of TP I interact with phosphate groups and saccharides of LPS, whereas hydrophobic residues interact with the acyl chains of LPS. Interaction between tachyplesin I, an antimicrobial peptide derived from horseshoe crab, and lipopolysaccharide.,Kushibiki T, Kamiya M, Aizawa T, Kumaki Y, Kikukawa T, Mizuguchi M, Demura M, Kawabata SI, Kawano K Biochim Biophys Acta. 2014 Jan 2;1844(3):527-534. doi:, 10.1016/j.bbapap.2013.12.017. PMID:24389234[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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