View source for 7boa


==A hexameric de novo coiled-coil assembly: CC-Type2-(YaFd)4-W19(BrPhe).==
<StructureSection load='7boa' size='340' side='right'caption='[[7boa]], [[Resolution|resolution]] 1.65&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7BOA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7BOA FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.65&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=4BF:4-BROMO-L-PHENYLALANINE'>4BF</scene>, <scene name='pdbligand=ACE:ACETYL+GROUP'>ACE</scene>, <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'>[https://proteopedia.org/fgij/fg.htm?mol=7boa FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7boa OCA], [https://pdbe.org/7boa PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7boa RCSB], [https://www.ebi.ac.uk/pdbsum/7boa PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7boa ProSAT]</span></td></tr>
</table>
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== Publication Abstract from PubMed ==
Rational protein design requires understanding the contribution of each amino acid to a targeted protein fold. For a subset of protein structures, namely, alpha-helical coiled coils (CCs), knowledge is sufficiently advanced to allow the rational de novo design of many structures, including entirely new protein folds. Current CC design rules center on using aliphatic hydrophobic residues predominantly to drive the folding and assembly of amphipathic alpha helices. The consequences of using aromatic residues-which would be useful for introducing structural probes, and binding and catalytic functionalities-into these interfaces are not understood. There are specific examples of designed CCs containing such aromatic residues, e.g., phenylalanine-rich sequences, and the use of polar aromatic residues to make buried hydrogen-bond networks. However, it is not known generally if sequences rich in tyrosine can form CCs, or what CC assemblies these would lead to. Here, we explore tyrosine-rich sequences in a general CC-forming background and resolve new CC structures. In one of these, an antiparallel tetramer, the tyrosine residues are solvent accessible and pack at the interface between the core and the surface. In another more complex structure, the residues are buried and form an extended hydrogen-bond network.

How Coiled-Coil Assemblies Accommodate Multiple Aromatic Residues.,Rhys GG, Dawson WM, Beesley JL, Martin FJO, Brady RL, Thomson AR, Woolfson DN Biomacromolecules. 2021 May 10;22(5):2010-2019. doi: 10.1021/acs.biomac.1c00131. , Epub 2021 Apr 21. PMID:33881308<ref>PMID:33881308</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 7boa" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Brady RL]]
[[Category: Martin FJO]]
[[Category: Rhys GG]]
[[Category: Woolfson DN]]