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==Glucan Binding Protein C of Streptococcus mutans Mediates both Sucrose-Independent and Sucrose-Dependent Adherence==
<StructureSection load='6cam' size='340' side='right'caption='[[6cam]], [[Resolution|resolution]] 1.75&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6cam]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptococcus_mutans Streptococcus mutans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6CAM OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6CAM 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]] 1.75&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BGC:BETA-D-GLUCOSE'>BGC</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</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=6cam FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6cam OCA], [https://pdbe.org/6cam PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6cam RCSB], [https://www.ebi.ac.uk/pdbsum/6cam PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6cam ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q8DTF1_STRMU Q8DTF1_STRMU] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The high-resolution structure of Glucan binding protein C (GbpC) at 1.14 A, a sucrose-dependent virulence factor of the dental caries pathogen Streptococcus mutans, has been determined. GbpC not only shares structural similarities with the V-regions of AgI/II and SspB, but also functional adherence to SAG and its scavenger receptor cysteine rich domains (SRCRs) which is not only a newly identified function for GbpC, but also an additional fail-safe binding mechanism for S. mutans Despite the structural similarities with S. mutans Antigen I/II (AgI/II) and SspB of Streptococcus gordonii, GbpC remains unique among these surface proteins in its propensity to adhere to dextran/glucans. The complex crystal structure of GbpC with dextrose (beta-D glucose, BGC) highlights exclusive structural features that facilitates this interaction with dextran. Targeted deletion mutant studies on GbpC's divergent loop region in the vicinity of a highly-conserved calcium binding site confirm its role in biofilm formation. Finally, we present a model for adherence to dextran. The structure of GbpC highlights how artfully microbes have engineered the lectin-like folds to broaden their functional adherence repertoire.

Glucan Binding Protein C of Streptococcus mutans Mediates both Sucrose-Independent and Sucrose-Dependent Adherence.,Mieher JL, Larson MR, Schormann N, Purushotham S, Wu R, Rajashankar KR, Wu H, Deivanayagam C Infect Immun. 2018 Apr 23. pii: IAI.00146-18. doi: 10.1128/IAI.00146-18. PMID:29685986<ref>PMID:29685986</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6cam" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Streptococcus mutans]]
[[Category: Deivanayagam C]]
[[Category: Mieher JL]]
[[Category: Schormann N]]