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1pv7

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Revision as of 09:51, 12 August 2020

Crystal structure of lactose permease with TDG

Structural highlights

1pv7 is a 2 chain structure with sequence from "bacillus_coli"_migula_1895 "bacillus coli" migula 1895. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
NonStd Res:
Related:	1pv6
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[LACY_ECOLI] Responsible for transport of beta-galactosides into the cell, with the concomitant import of a proton (symport system).

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Membrane transport proteins that transduce free energy stored in electrochemical ion gradients into a concentration gradient are a major class of membrane proteins. We report the crystal structure at 3.5 angstroms of the Escherichia coli lactose permease, an intensively studied member of the major facilitator superfamily of transporters. The molecule is composed of N- and C-terminal domains, each with six transmembrane helices, symmetrically positioned within the permease. A large internal hydrophilic cavity open to the cytoplasmic side represents the inward-facing conformation of the transporter. The structure with a bound lactose homolog, beta-D-galactopyranosyl-1-thio-beta-D-galactopyranoside, reveals the sugar-binding site in the cavity, and residues that play major roles in substrate recognition and proton translocation are identified. We propose a possible mechanism for lactose/proton symport (co-transport) consistent with both the structure and a large body of experimental data.

Structure and mechanism of the lactose permease of Escherichia coli.,Abramson J, Smirnova I, Kasho V, Verner G, Kaback HR, Iwata S Science. 2003 Aug 1;301(5633):610-5. PMID:12893935^[1]

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

References

↑ Abramson J, Smirnova I, Kasho V, Verner G, Kaback HR, Iwata S. Structure and mechanism of the lactose permease of Escherichia coli. Science. 2003 Aug 1;301(5633):610-5. PMID:12893935 doi:http://dx.doi.org/10.1126/science.1088196

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1pv7"

@@ Line 3: / Line 3: @@
 <StructureSection load='1pv7' size='340' side='right'caption='[[1pv7]], [[Resolution|resolution]] 3.60&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1pv7]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PV7 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1PV7 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1pv7]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PV7 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1PV7 FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=TDG:THIODIGALACTOSIDE'>TDG</scene></td></tr>
+</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GAL:BETA-D-GALACTOSE'>GAL</scene></td></tr>
+<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=YIO:(2R,3R,4S,5R,6S)-2-(HYDROXYMETHYL)-6-SULFANYL-OXANE-3,4,5-TRIOL'>YIO</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1pv6|1pv6]]</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=1pv7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1pv7 OCA], [http://pdbe.org/1pv7 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1pv7 RCSB], [http://www.ebi.ac.uk/pdbsum/1pv7 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1pv7 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=1pv7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1pv7 OCA], [http://pdbe.org/1pv7 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1pv7 RCSB], [http://www.ebi.ac.uk/pdbsum/1pv7 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1pv7 ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 33: / Line 34: @@
 *[[Lactose Permease|Lactose Permease]]
 *[[Major Facilitators|Major Facilitators]]
-*[[Symporter|Symporter]]
+*[[Symporter 3D structures|Symporter 3D structures]]
 == References ==
 <references/>

1pv7

From Proteopedia

Revision as of 09:51, 12 August 2020

Crystal structure of lactose permease with TDG

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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