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1k7s

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Revision as of 21:22, 24 January 2018

FhuD complexed with albomycin-delta 2

Structural highlights

1k7s is a 1 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:
Related:	1efd, 1esz, 1k2v
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[FHUD_ECOLI] Part of the ABC transporter complex FhuCDB involved in iron(3+)-hydroxamate import. Binds the iron(3+)-hydroxamate complex and transfers it to the membrane-bound permease. Required for the transport of all iron(3+)-hydroxamate siderophores such as ferrichrome, gallichrome, desferrioxamine, coprogen, aerobactin, shizokinen, rhodotorulic acid and the antibiotic albomycin.

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

Siderophore-binding proteins play an essential role in the uptake of iron in many Gram-positive and Gram-negative bacteria. FhuD is an ATP-binding cassette-type (ABC-type) binding protein involved in the uptake of hydroxamate-type siderophores in Escherichia coli. Structures of FhuD complexed with the antibiotic albomycin, the fungal siderophore coprogen and the drug Desferal have been determined at high resolution by x-ray crystallography. FhuD has an unusual bilobal structure for a periplasmic ligand binding protein, with two mixed beta/alpha domains connected by a long alpha-helix. The binding site for hydroxamate-type ligands is composed of a shallow pocket that lies between these two domains. Recognition of siderophores primarily occurs through interactions between the iron-hydroxamate centers of each siderophore and the side chains of several key residues in the binding pocket. Rearrangements of side chains within the binding pocket accommodate the unique structural features of each siderophore. The backbones of the siderophores are not involved in any direct interactions with the protein, demonstrating how siderophores with considerable chemical and structural diversity can be bound by FhuD. For albomycin, which consists of an antibiotic group attached to a hydroxamate siderophore, electron density for the antibiotic portion was not observed. Therefore, this study provides a basis for the rational design of novel bacteriostatic agents, in the form of siderophore-antibiotic conjugates that can act as "Trojan horses," using the hydroxamate-type siderophore uptake system to actively deliver antibiotics directly into targeted pathogens.

X-ray crystallographic structures of the Escherichia coli periplasmic protein FhuD bound to hydroxamate-type siderophores and the antibiotic albomycin.,Clarke TE, Braun V, Winkelmann G, Tari LW, Vogel HJ J Biol Chem. 2002 Apr 19;277(16):13966-72. Epub 2002 Jan 22. PMID:11805094^[1]

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

References

↑ Clarke TE, Braun V, Winkelmann G, Tari LW, Vogel HJ. X-ray crystallographic structures of the Escherichia coli periplasmic protein FhuD bound to hydroxamate-type siderophores and the antibiotic albomycin. J Biol Chem. 2002 Apr 19;277(16):13966-72. Epub 2002 Jan 22. PMID:11805094 doi:10.1074/jbc.M109385200

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1k7s"

@@ Line 1: / Line 1: @@
 ==FhuD complexed with albomycin-delta 2==
 <StructureSection load='1k7s' size='340' side='right' caption='[[1k7s]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ALB:DELTA-2-ALBOMYCIN+A1'>ALB</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1efd|1efd]], [[1esz|1esz]], [[1k2v|1k2v]]</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=1k7s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1k7s OCA], [http://pdbe.org/1k7s PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1k7s RCSB], [http://www.ebi.ac.uk/pdbsum/1k7s PDBsum]</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=1k7s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1k7s OCA], [http://pdbe.org/1k7s PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1k7s RCSB], [http://www.ebi.ac.uk/pdbsum/1k7s PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1k7s ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 13: / Line 14: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/k7/1k7s_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/k7/1k7s_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
@@ Line 28: / Line 29: @@
 </div>
 <div class="pdbe-citations 1k7s" style="background-color:#fffaf0;"></div>
-==See Also==
-*[[Ferric hydroxamate uptake receptor|Ferric hydroxamate uptake receptor]]
 == References ==
 <references/>

1k7s

From Proteopedia

Revision as of 21:22, 24 January 2018

FhuD complexed with albomycin-delta 2

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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