View source for 4oik


==(Quasi-)Racemic X-ray crystal structure of glycosylated chemokine Ser-CCL1.==
<StructureSection load='4oik' size='340' side='right'caption='[[4oik]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4oik]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4OIK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4OIK 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]] 2.1&#8491;</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=DAL:D-ALANINE'>DAL</scene>, <scene name='pdbligand=DAR:D-ARGININE'>DAR</scene>, <scene name='pdbligand=DAS:D-ASPARTIC+ACID'>DAS</scene>, <scene name='pdbligand=DCY:D-CYSTEINE'>DCY</scene>, <scene name='pdbligand=DGL:D-GLUTAMIC+ACID'>DGL</scene>, <scene name='pdbligand=DGN:D-GLUTAMINE'>DGN</scene>, <scene name='pdbligand=DHI:D-HISTIDINE'>DHI</scene>, <scene name='pdbligand=DIL:D-ISOLEUCINE'>DIL</scene>, <scene name='pdbligand=DLE:D-LEUCINE'>DLE</scene>, <scene name='pdbligand=DLY:D-LYSINE'>DLY</scene>, <scene name='pdbligand=DPN:D-PHENYLALANINE'>DPN</scene>, <scene name='pdbligand=DPR:D-PROLINE'>DPR</scene>, <scene name='pdbligand=DSG:D-ASPARAGINE'>DSG</scene>, <scene name='pdbligand=DSN:D-SERINE'>DSN</scene>, <scene name='pdbligand=DTH:D-THREONINE'>DTH</scene>, <scene name='pdbligand=DTR:D-TRYPTOPHAN'>DTR</scene>, <scene name='pdbligand=DTY:D-TYROSINE'>DTY</scene>, <scene name='pdbligand=DVA:D-VALINE'>DVA</scene>, <scene name='pdbligand=MED:D-METHIONINE'>MED</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=4oik FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4oik OCA], [https://pdbe.org/4oik PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4oik RCSB], [https://www.ebi.ac.uk/pdbsum/4oik PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4oik ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/CCL1_HUMAN CCL1_HUMAN] Cytokine that is chemotactic for monocytes but not for neutrophils. Binds to CCR8.<ref>PMID:1557400</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Our goal was to obtain the X-ray crystal structure of the glycosylated chemokine Ser-CCL1. Glycoproteins can be hard to crystallize because of the heterogeneity of the oligosaccharide (glycan) moiety. We used glycosylated Ser-CCL1 that had been prepared by total chemical synthesis as a homogeneous compound containing an N-linked asialo biantennary nonasaccharide glycan moiety of defined covalent structure. Facile crystal formation occurred from a quasi-racemic mixture consisting of glycosylated L-protein and non-glycosylated-D-protein, while no crystals were obtained from the glycosylated L-protein alone. The structure was solved at a resolution of 2.6-2.1 A. However, the glycan moiety was disordered: only the N-linked GlcNAc sugar was well-defined in the electron density map. A racemic mixture of the protein enantiomers L-Ser-CCL1 and D-Ser-CCL1 was also crystallized, and the structure of the true racemate was solved at a resolution of 2.7-2.15 A. Superimposition of the structures of the protein moieties of L-Ser-CCL1 and glycosylated-L-Ser-CCL1 revealed there was no significant alteration of the protein structure by N-glycosylation.

(Quasi-)Racemic X-ray Structures of Glycosylated and Non-Glycosylated Forms of the Chemokine Ser-CCL1 Prepared by Total Chemical Synthesis.,Okamoto R, Mandal K, Sawaya MR, Kajihara Y, Yeates TO, Kent SB Angew Chem Int Ed Engl. 2014 Apr 1. doi: 10.1002/anie.201400679. PMID:24692304<ref>PMID:24692304</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4oik" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Synthetic construct]]
[[Category: Kajihara Y]]
[[Category: Kent SBH]]
[[Category: Mandal K]]
[[Category: Okamoto R]]
[[Category: Sawaya MR]]
[[Category: Yeates TO]]