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4gf9
From Proteopedia
(Difference between revisions)
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| - | + | ==Structural insights into the dual strategy of recognition of peptidoglycan recognition protein, PGRP-S: ternary complex of PGRP-S with LPS and fatty acid== | |
| - | + | <StructureSection load='4gf9' size='340' side='right' caption='[[4gf9]], [[Resolution|resolution]] 2.80Å' scene=''> | |
| - | + | == Structural highlights == | |
| + | <table><tr><td colspan='2'>[[4gf9]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Camelus_dromedarius Camelus dromedarius]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4GF9 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4GF9 FirstGlance]. <br> | ||
| + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=LP5:(R)-((2R,3S,4R,5R,6R)-3-HYDROXY-2-(HYDROXYMETHYL)-5-((R)-3-HYDROXYTETRADECANAMIDO)-6-(PHOSPHONOOXY)TETRAHYDRO-2H-PYRAN-4-YL)+3-HYDROXYTETRADECANOATE'>LP5</scene>, <scene name='pdbligand=STE:STEARIC+ACID'>STE</scene></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=4gf9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4gf9 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4gf9 RCSB], [http://www.ebi.ac.uk/pdbsum/4gf9 PDBsum]</span></td></tr> | ||
| + | </table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Peptidoglycan recognition proteins (PGRPs) are part of the innate immune system. The 19 kDa Short PGRP (PGRP-S) is one of the four mammalian PGRPs. The concentration of PGRP-S in camel (CPGRP-S) has been shown to increase considerably during mastitis. The structure of CPGRP-S consists of four protein molecules designated as A, B, C and D forming stable intermolecular contacts, A-B and C-D. The A-B and C-D interfaces are located on the opposite sides of the same monomer leading to the the formation of a linear chain with alternating A-B and C-D contacts. Two ligand binding sites, one at C-D contact and another at A-B contact have been observed. CPGRP-S binds to the components of bacterial cell wall molecules such as lipopolysaccharide (LPS), lipoteichoic acid (LTA), and peptidoglycan (PGN) from both gram-positive and gram-negative bacteria. It also binds to fatty acids including mycolic acid of the Mycobacterium tuberculosis (Mtb). Previous structural studies of binary complexes of CPGRP-S with LPS and stearic acid (SA) have shown that LPS binds to CPGRP-S at C-D contact (Site-1) while SA binds to it at the A-B contact (Site-2). The binding studies using surface plasmon resonance showed that LPS and SA bound to CPGRP-S in the presence of each other. The structure determination of the ternary complex showed that LPS and SA bound to CPGRP-S at Site-1 and Site-2 respectively. LPS formed 13 hydrogen bonds and 159 van der Waals contacts (distances </=4.2 A) while SA formed 56 van der Waals contacts. The ELISA test showed that increased levels of productions of pro-inflammatory cytokines TNF-alpha and IFN-gamma due to LPS and SA decreased considerably upon the addition of CPGRP-S. | ||
| - | + | Structural insights into the dual strategy of recognition by peptidoglycan recognition protein, PGRP-S: structure of the ternary complex of PGRP-S with lipopolysaccharide and stearic acid.,Sharma P, Dube D, Sinha M, Yadav S, Kaur P, Sharma S, Singh TP PLoS One. 2013;8(1):e53756. doi: 10.1371/journal.pone.0053756. Epub 2013 Jan 9. PMID:23326499<ref>PMID:23326499</ref> | |
| - | + | ||
| - | == | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> |
| - | + | </div> | |
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
[[Category: Camelus dromedarius]] | [[Category: Camelus dromedarius]] | ||
| - | [[Category: Dube, D | + | [[Category: Dube, D]] |
| - | [[Category: Kaur, P | + | [[Category: Kaur, P]] |
| - | [[Category: Sharma, P | + | [[Category: Sharma, P]] |
| - | [[Category: Sharma, S | + | [[Category: Sharma, S]] |
| - | [[Category: Singh, T P | + | [[Category: Singh, T P]] |
| - | [[Category: Sinha, M | + | [[Category: Sinha, M]] |
| - | [[Category: Yadav, S | + | [[Category: Yadav, S]] |
[[Category: Antibiotic]] | [[Category: Antibiotic]] | ||
[[Category: Antimicrobial]] | [[Category: Antimicrobial]] | ||
Revision as of 11:27, 21 December 2014
Structural insights into the dual strategy of recognition of peptidoglycan recognition protein, PGRP-S: ternary complex of PGRP-S with LPS and fatty acid
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