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| | ==Crystal Structure of Neisseria meningitidis DsbD c-terminal domain in the oxidised form== | | ==Crystal Structure of Neisseria meningitidis DsbD c-terminal domain in the oxidised form== |
| - | <StructureSection load='6dnu' size='340' side='right' caption='[[6dnu]], [[Resolution|resolution]] 2.28Å' scene=''> | + | <StructureSection load='6dnu' size='340' side='right'caption='[[6dnu]], [[Resolution|resolution]] 2.28Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[6dnu]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Neiml Neiml]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6DNU OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6DNU FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[6dnu]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Neisseria_meningitidis_alpha14 Neisseria meningitidis alpha14]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6DNU OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6DNU FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=P6G:HEXAETHYLENE+GLYCOL'>P6G</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.283Å</td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">dsbD, NMO_1340 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=662598 NEIML])</td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=P6G:HEXAETHYLENE+GLYCOL'>P6G</scene></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Protein-disulfide_reductase Protein-disulfide reductase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.8.1.8 1.8.1.8] </span></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=6dnu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6dnu OCA], [https://pdbe.org/6dnu PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6dnu RCSB], [https://www.ebi.ac.uk/pdbsum/6dnu PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6dnu ProSAT]</span></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=6dnu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6dnu OCA], [http://pdbe.org/6dnu PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6dnu RCSB], [http://www.ebi.ac.uk/pdbsum/6dnu PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6dnu ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/C6S7X6_NEIML C6S7X6_NEIML]] Required to facilitate the formation of correct disulfide bonds in some periplasmic proteins and for the assembly of the periplasmic c-type cytochromes. Acts by transferring electrons from cytoplasmic thioredoxin to the periplasm. This transfer involves a cascade of disulfide bond formation and reduction steps.[HAMAP-Rule:MF_00399] | + | [https://www.uniprot.org/uniprot/C6S7X6_NEIML C6S7X6_NEIML] Required to facilitate the formation of correct disulfide bonds in some periplasmic proteins and for the assembly of the periplasmic c-type cytochromes. Acts by transferring electrons from cytoplasmic thioredoxin to the periplasm. This transfer involves a cascade of disulfide bond formation and reduction steps.[HAMAP-Rule:MF_00399] |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | </div> | | </div> |
| | <div class="pdbe-citations 6dnu" style="background-color:#fffaf0;"></div> | | <div class="pdbe-citations 6dnu" style="background-color:#fffaf0;"></div> |
| | + | |
| | + | ==See Also== |
| | + | *[[Thiol:disulfide interchange protein 3D structures|Thiol:disulfide interchange protein 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Neiml]] | + | [[Category: Large Structures]] |
| - | [[Category: Protein-disulfide reductase]] | + | [[Category: Neisseria meningitidis alpha14]] |
| - | [[Category: Heras, B]] | + | [[Category: Heras B]] |
| - | [[Category: Paxman, J J]] | + | [[Category: Paxman JJ]] |
| - | [[Category: Smith, R P]] | + | [[Category: Smith RP]] |
| - | [[Category: Disulphide reductase]]
| + | |
| - | [[Category: Dsb protein]]
| + | |
| - | [[Category: Oxidoreductase]]
| + | |
| Structural highlights
Function
C6S7X6_NEIML Required to facilitate the formation of correct disulfide bonds in some periplasmic proteins and for the assembly of the periplasmic c-type cytochromes. Acts by transferring electrons from cytoplasmic thioredoxin to the periplasm. This transfer involves a cascade of disulfide bond formation and reduction steps.[HAMAP-Rule:MF_00399]
Publication Abstract from PubMed
The worldwide incidence of neisserial infections, particularly gonococcal infections, is increasingly associated with antibiotic resistant strains. In particular, extensively drug-resistant Neisseria gonorrhoeae strains that are resistant to third-generation cephalosporins are a major public health concern. There is a pressing clinical need to identify new targets for the development of antibiotics effective against neisserial-specific processes. In this study, we report that the bacterial disulfide reductase DsbD is highly prevalent and conserved amongst Neisseria spp. and that this enzyme is essential for survival of N. gonorrhoeae DsbD is a membrane bound protein that consists of two periplasmic domains, n-DsbD and c-DsbD, which flank the transmembrane domain t-DsbD. In the current work we show that the two functionally essential periplasmic domains of Neisseria DsbD catalyze electron transfer reactions through unidirectional inter-domain interactions, from reduced c-DsbD to oxidized n-DsbD, and that this process is not dictated by their redox potentials. Structural characterization of Neisseria n- and c-DsbD domains in both redox states provides evidence that steric hindrance reduces interactions between the two periplasmic domains when n-DsbD is reduced, thereby preventing a futile redox cycle. Finally, we propose a conserved mechanism of electron transfer for DsbD and define the residues involved in domain-domain recognition. Inhibitors of the interaction of the two DsbD domains have the potential to be developed as anti-neisserial agents.
Structural and biochemical insights into the disulfide reductase mechanism of DsbD, an essential enzyme for neisserial pathogens.,Smith RP, Mohanty B, Mowlaboccus S, Paxman JJ, Williams ML, Headey SJ, Wang G, Subedi P, Doak BC, Kahler CM, Scanlon MJ, Heras B J Biol Chem. 2018 Sep 4. pii: RA118.004847. doi: 10.1074/jbc.RA118.004847. PMID:30181210[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Smith RP, Mohanty B, Mowlaboccus S, Paxman JJ, Williams ML, Headey SJ, Wang G, Subedi P, Doak BC, Kahler CM, Scanlon MJ, Heras B. Structural and biochemical insights into the disulfide reductase mechanism of DsbD, an essential enzyme for neisserial pathogens. J Biol Chem. 2018 Sep 4. pii: RA118.004847. doi: 10.1074/jbc.RA118.004847. PMID:30181210 doi:http://dx.doi.org/10.1074/jbc.RA118.004847
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