2nd8: Difference between revisions
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<StructureSection load='2nd8' size='340' side='right'caption='[[2nd8]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''> | <StructureSection load='2nd8' size='340' side='right'caption='[[2nd8]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[2nd8]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2ND8 OCA]. For a <b>guided tour on the structure components</b> use [ | <table><tr><td colspan='2'>[[2nd8]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2ND8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2ND8 FirstGlance]. <br> | ||
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2nd6|2nd6]], [[2nd7|2nd7]]</td></tr> | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2nd6|2nd6]], [[2nd7|2nd7]]</div></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2nd8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2nd8 OCA], [https://pdbe.org/2nd8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2nd8 RCSB], [https://www.ebi.ac.uk/pdbsum/2nd8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2nd8 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
Revision as of 08:39, 13 July 2022
Structures of DK17 in TBLE LUVSStructures of DK17 in TBLE LUVS
Structural highlights
Publication Abstract from PubMedCell-penetrating peptides (CPPs) have shown promise in nonpermeable therapeutic drug delivery, because of their ability to transport a variety of cargo molecules across the cell membranes and their noncytotoxicity. Drosophila antennapedia homeodomain-derived CPP penetratin (RQIKIWFQNRRMKWKK), being rich in positively charged residues, has been increasingly used as a potential drug carrier for various purposes. Penetratin can breach the tight endothelial network known as the blood-brain barrier (BBB), permitting treatment of several neurodegenerative maladies, including Alzheimer's disease, Parkinson's disease, and Huntington's disease. However, a detailed structural understanding of penetratin and its mechanism of action is lacking. This study defines structural features of the penetratin-derived peptide, DK17 (DRQIKIWFQNRRMKWKK), in several model membranes and describes a membrane-induced conformational transition of the DK17 peptide in these environments. A series of biophysical experiments, including high-resolution nuclear magnetic resonance spectroscopy, provides the three-dimensional structure of DK17 in different membranes mimicking the BBB or total brain lipid extract. Molecular dynamics simulations support the experimental results showing preferential binding of DK17 to particular lipids at atomic resolution. The peptide conserves the structure of the subdomain spanning residues Ile6-Arg11, despite considerable conformational variation in different membrane models. In vivo data suggest that the wild type, not a mutated sequence, enters the central nervous system. Together, these data highlight important structural and functional attributes of DK17 that could be utilized in drug delivery for neurodegenerative disorders. Structural Elucidation of the Cell-Penetrating Penetratin Peptide in Model Membranes at the Atomic Level: Probing Hydrophobic Interactions in the Blood-Brain Barrier.,Bera S, Kar RK, Mondal S, Pahan K, Bhunia A Biochemistry. 2016 Sep 6;55(35):4982-96. doi: 10.1021/acs.biochem.6b00518. Epub, 2016 Aug 24. PMID:27532224[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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