View source for 6i2o


==Solution NMR structure of PilE1 from Streptococcus sanguinis==
<StructureSection load='6i2o' size='340' side='right'caption='[[6i2o]], [[NMR_Ensembles_of_Models | 10 NMR models]]' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6i2o]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_10556 Atcc 10556]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6I2O OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6I2O FirstGlance]. <br>
</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">pilE1, SSV_2241 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1305 ATCC 10556])</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6i2o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6i2o OCA], [http://pdbe.org/6i2o PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6i2o RCSB], [http://www.ebi.ac.uk/pdbsum/6i2o PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6i2o ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Type IV pili (Tfp) are functionally versatile filaments, widespread in prokaryotes, that belong to a large class of filamentous nanomachines known as type IV filaments (Tff). Although Tfp have been extensively studied in several Gram-negative pathogens where they function as key virulence factors, many aspects of their biology remain poorly understood. Here, we performed a global biochemical and structural analysis of Tfp in a recently emerged Gram-positive model, Streptococcus sanguinis In particular, we focused on the five pilins and pilin-like proteins involved in Tfp biology in S. sanguinis We found that the two major pilins, PilE1 and PilE2, (i) follow widely conserved principles for processing by the prepilin peptidase PilD and for assembly into filaments; (ii) display only one of the post-translational modifications frequently found in pilins, i.e. a methylated N-terminus; (iii) are found in the same hetero-polymeric filaments; and (iv) are not functionally equivalent. The 3D structure of PilE1, solved by NMR, revealed a classical pilin fold with a highly unusual flexible C-terminus. Intriguingly, PilE1 more closely resembles pseudopilins forming shorter Tff than bona fide Tfp-forming major pilins, underlining the evolutionary relatedness among different Tff. Finally, we show that S. sanguinis Tfp contain a low abundance of three additional proteins processed by PilD, the minor pilins PilA, PilB, and PilC. These findings provide the first global biochemical and structural picture of a Gram-positive Tfp and have fundamental implications for our understanding of a widespread class of filamentous nanomachines.

Global biochemical and structural analysis of the type IV pilus from the Gram-positive bacterium Streptococcus sanguinis.,Berry JL, Gurung I, Anonsen JH, Spielman I, Harper E, Hall AMJ, Goosens VJ, Raynaud C, Koomey M, Biais N, Matthews S, Pelicic V J Biol Chem. 2019 Mar 5. pii: RA118.006917. doi: 10.1074/jbc.RA118.006917. PMID:30837269<ref>PMID:30837269</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6i2o" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Atcc 10556]]
[[Category: Large Structures]]
[[Category: Berry, J L]]
[[Category: Xu, Y]]
[[Category: Pilin]]
[[Category: Pilus]]
[[Category: Protein fibril]]
[[Category: Type iv pilin]]