6y14

<table><tr><td colspan='2'>[[6y14]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6Y14 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6Y14 FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=NH2:AMINO+GROUP'>NH2</scene>, <scene name='pdbligand=O65:3,5-bis(hydroxymethyl)-4-methyl-benzaldehyde'>O65</scene></td></tr>

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== Publication Abstract from PubMed ==

The peptide alpha-helix is right-handed when containing amino acids with l-chirality, and left-handed with d-chirality, however mixed chirality peptides generally do not form alpha-helices unless a helix inducer such as the non-natural residue amino-isobutyric acid is used. Herein we report the first X-ray crystal structures of mixed chirality alpha-helices in short peptides comprising only natural residues as the example of a stapled bicyclic and a linear membrane disruptive amphiphilic antimicrobial peptide (AMP) containing seven l- and four d-residues, as complexes of fucosylated analogs with the bacterial lectin LecB. The mixed chirality alpha-helices are superimposable onto the homochiral alpha-helices and form under similar conditions as shown by CD spectra and MD simulations but non-hemolytic and resistant to proteolysis. The observation of a mixed chirality alpha-helix with only natural residues in the protein environment of LecB suggests a vast unexplored territory of alpha-helical mixed chirality sequences and their possible use for optimizing bioactive alpha-helical peptides.

A mixed chirality alpha-helix in a stapled bicyclic and a linear antimicrobial peptide revealed by X-ray crystallography.,Baeriswyl S, Personne H, Di Bonaventura I, Kohler T, van Delden C, Stocker A, Javor S, Reymond JL RSC Chem Biol. 2021 Aug 20;2(6):1608-1617. doi: 10.1039/d1cb00124h. eCollection, 2021 Dec 2. PMID:34977576<ref>PMID:34977576</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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== References ==

<references/>

[[Category: Synthetic construct]]