6s8h

From Proteopedia

(Difference between revisions)

Revision as of 06:03, 11 April 2020

Cryo-EM structure of LptB2FG in complex with LPS

6s8h, resolution 3.70Å

Structural highlights

6s8h is a 4 chain structure with sequence from "shigella_paradysenteriae"_weldin_1927 "shigella paradysenteriae" weldin 1927. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Related:	6s8g
Gene:	SGF_01136 ("Shigella paradysenteriae" Weldin 1927), lptF, SF4228, S4489 ("Shigella paradysenteriae" Weldin 1927), yjgQ, S4488, CQA91_25110, NCTC9783_00309, SAMEA3710568_03584 ("Shigella paradysenteriae" Weldin 1927)
Experimental data:	Check to display Experimental Data
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[LPTF_SHIFL] Part of the ABC transporter complex LptBFG involved in the translocation of lipopolysaccharide (LPS) from the inner membrane to the outer membrane.

Publication Abstract from PubMed

Lipopolysaccharides (LPS) of Gram-negative bacteria are critical for the defence against cytotoxic substances and must be transported from the inner membrane (IM) to the outer membrane (OM) through a bridge formed by seven membrane proteins (LptBFGCADE). The IM component LptB2FG powers the process through a yet unclarified mechanism. Here we report three high-resolution cryo-EM structures of LptB2FG alone and complexed with LptC (LptB2FGC), trapped in either the LPS- or AMP-PNP-bound state. The structures reveal conformational changes between these states and substrate binding with or without LptC. We identify two functional transmembrane arginine-containing loops interacting with the bound AMP-PNP and elucidate allosteric communications between the domains. AMP-PNP binding induces an inward rotation and shift of the transmembrane helices of LptFG and LptC to tighten the cavity, with the closure of two lateral gates, to eventually expel LPS into the bridge. Functional assays reveal the functionality of the LptF and LptG periplasmic domains. Our findings shed light on the LPS transport mechanism.

Cryo-EM structures of lipopolysaccharide transporter LptB2FGC in lipopolysaccharide or AMP-PNP-bound states reveal its transport mechanism.,Tang X, Chang S, Luo Q, Zhang Z, Qiao W, Xu C, Zhang C, Niu Y, Yang W, Wang T, Zhang Z, Zhu X, Wei X, Dong C, Zhang X, Dong H Nat Commun. 2019 Sep 13;10(1):4175. doi: 10.1038/s41467-019-11977-1. PMID:31519889^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Tang X, Chang S, Luo Q, Zhang Z, Qiao W, Xu C, Zhang C, Niu Y, Yang W, Wang T, Zhang Z, Zhu X, Wei X, Dong C, Zhang X, Dong H. Cryo-EM structures of lipopolysaccharide transporter LptB2FGC in lipopolysaccharide or AMP-PNP-bound states reveal its transport mechanism. Nat Commun. 2019 Sep 13;10(1):4175. doi: 10.1038/s41467-019-11977-1. PMID:31519889 doi:http://dx.doi.org/10.1038/s41467-019-11977-1

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/6s8h"

@@ Line 3: / Line 3: @@
 <SX load='6s8h' size='340' side='right' viewer='molstar' caption='[[6s8h]], [[Resolution|resolution]] 3.70&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[6s8h]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/"shigella_paradysenteriae"_weldin_1927 "shigella paradysenteriae" weldin 1927]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6S8H OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6S8H FirstGlance]. <br>
+<table><tr><td colspan='2'>[[6s8h]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/"shigella_paradysenteriae"_weldin_1927 "shigella paradysenteriae" weldin 1927]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6S8H OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6S8H FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=DCQ:2-DECYL-5,6-DIMETHOXY-3-METHYLCYCLOHEXA-2,5-DIENE-1,4-DIONE'>DCQ</scene>, <scene name='pdbligand=JSG:(2~{R},4~{R},5~{R},6~{R})-6-[(1~{R})-1,2-bis(oxidanyl)ethyl]-2-[(2~{R},4~{R},5~{R},6~{R})-6-[(1~{R})-1,2-bis(oxidanyl)ethyl]-5-[(2~{S},3~{S},4~{R},5~{R},6~{R})-6-[(1~{S})-1,2-bis(oxidanyl)ethyl]-4-[(2~{R},3~{S},4~{R},5~{S},6~{R})-6-[(1~{S})-2-[(2~{S},3~{S},4~{S},5~{S},6~{R})-6-[(1~{S})-1,2-bis(oxidanyl)ethyl]-3,4,5-tris(oxidanyl)oxan-2-yl]oxy-1-oxidanyl-ethyl]-3,4-bis(oxidanyl)-5-phosphonooxy-oxan-2-yl]oxy-3-oxidanyl-5-phosphonooxy-oxan-2-yl]oxy-2-carboxy-2-[[(2~{R},3~{S},4~{R},5~{R},6~{R})-5-[[(3~{R})-3-dodecanoyloxytetradecanoyl]amino]-6-[[(2~{R},3~{S},4~{R},5~{R},6~{R})-3-oxidanyl-5-[[(3~{R})-3-oxidanyltetradecanoyl]amino]-4-[(3~{R})-3-oxidanyltetradecanoyl]oxy-6-phosphonooxy-oxan-2-yl]methoxy]-3-phosphonooxy-4-[(3~{R})-3-tetradecanoyloxytetradecanoyl]oxy-oxan-2-yl]methoxy]oxan-4-yl]oxy-4,5-bis(oxidanyl)oxane-2-carboxylic+acid'>JSG</scene>, <scene name='pdbligand=LMN:LAURYL+MALTOSE+NEOPENTYL+GLYCOL'>LMN</scene>, <scene name='pdbligand=LMT:DODECYL-BETA-D-MALTOSIDE'>LMT</scene></td></tr>
+</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=DCQ:2-DECYL-5,6-DIMETHOXY-3-METHYLCYCLOHEXA-2,5-DIENE-1,4-DIONE'>DCQ</scene>, <scene name='pdbligand=JSG:(2~{R},4~{R},5~{R},6~{R})-6-[(1~{R})-1,2-bis(oxidanyl)ethyl]-2-[(2~{R},4~{R},5~{R},6~{R})-6-[(1~{R})-1,2-bis(oxidanyl)ethyl]-5-[(2~{S},3~{S},4~{R},5~{R},6~{R})-6-[(1~{S})-1,2-bis(oxidanyl)ethyl]-4-[(2~{R},3~{S},4~{R},5~{S},6~{R})-6-[(1~{S})-2-[(2~{S},3~{S},4~{S},5~{S},6~{R})-6-[(1~{S})-1,2-bis(oxidanyl)ethyl]-3,4,5-tris(oxidanyl)oxan-2-yl]oxy-1-oxidanyl-ethyl]-3,4-bis(oxidanyl)-5-phosphonooxy-oxan-2-yl]oxy-3-oxidanyl-5-phosphonooxy-oxan-2-yl]oxy-2-carboxy-2-[[(2~{R},3~{S},4~{R},5~{R},6~{R})-5-[[(3~{R})-3-dodecanoyloxytetradecanoyl]amino]-6-[[(2~{R},3~{S},4~{R},5~{R},6~{R})-3-oxidanyl-5-[[(3~{R})-3-oxidanyltetradecanoyl]amino]-4-[(3~{R})-3-oxidanyltetradecanoyl]oxy-6-phosphonooxy-oxan-2-yl]methoxy]-3-phosphonooxy-4-[(3~{R})-3-tetradecanoyloxytetradecanoyl]oxy-oxan-2-yl]methoxy]oxan-4-yl]oxy-4,5-bis(oxidanyl)oxane-2-carboxylic+acid'>JSG</scene>, <scene name='pdbligand=LMN:LAURYL+MALTOSE+NEOPENTYL+GLYCOL'>LMN</scene>, <scene name='pdbligand=LMT:DODECYL-BETA-D-MALTOSIDE'>LMT</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[6s8g|6s8g]]</td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">SGF_01136 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=623 "Shigella paradysenteriae" Weldin 1927]), lptF, SF4228, S4489 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=623 "Shigella paradysenteriae" Weldin 1927]), yjgQ, S4488, CQA91_25110, NCTC9783_00309, SAMEA3710568_03584 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=623 "Shigella paradysenteriae" Weldin 1927])</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=6s8h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6s8h OCA], [http://pdbe.org/6s8h PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6s8h RCSB], [http://www.ebi.ac.uk/pdbsum/6s8h PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6s8h ProSAT]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6s8h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6s8h OCA], [http://pdbe.org/6s8h PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6s8h RCSB], [http://www.ebi.ac.uk/pdbsum/6s8h PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6s8h ProSAT]</span></td></tr>
 </table>
 == Function ==

6s8h

From Proteopedia

Revision as of 06:03, 11 April 2020

Cryo-EM structure of LptB2FG in complex with LPS

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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