3u0d: Difference between revisions

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-[[Image:3u0d.png|left|200px]]
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+==The structure of human Siderocalin bound to the bacterial siderophore 2,3-DHBA==
-The line below this paragraph, containing "STRUCTURE_3u0d", creates the "Structure Box" on the page.
+<StructureSection load='3u0d' size='340' side='right'caption='[[3u0d]], [[Resolution|resolution]] 2.51&Aring;' scene=''>
-You may change the PDB parameter (which sets the PDB file loaded into the applet)
+== Structural highlights ==
-or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
+<table><tr><td colspan='2'>[[3u0d]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3U0D OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3U0D FirstGlance]. <br>
-or leave the SCENE parameter empty for the default display.
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.51&#8491;</td></tr>
--->
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=DBH:2,3-DIHYDROXY-BENZOIC+ACID'>DBH</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene></td></tr>
-{{STRUCTURE_3u0d|  PDB=3u0d  |  SCENE=  }}
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3u0d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3u0d OCA], [https://pdbe.org/3u0d PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3u0d RCSB], [https://www.ebi.ac.uk/pdbsum/3u0d PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3u0d ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/NGAL_HUMAN NGAL_HUMAN] Iron-trafficking protein involved in multiple processes such as apoptosis, innate immunity and renal development. Binds iron through association with 2,5-dihydroxybenzoic acid (2,5-DHBA), a siderophore that shares structural similarities with bacterial enterobactin, and delivers or removes iron from the cell, depending on the context. Iron-bound form (holo-24p3) is internalized following binding to the SLC22A17 (24p3R) receptor, leading to release of iron and subsequent increase of intracellular iron concentration. In contrast, association of the iron-free form (apo-24p3) with the SLC22A17 (24p3R) receptor is followed by association with an intracellular siderophore, iron chelation and iron transfer to the extracellular medium, thereby reducing intracellular iron concentration. Involved in apoptosis due to interleukin-3 (IL3) deprivation: iron-loaded form increases intracellular iron concentration without promoting apoptosis, while iron-free form decreases intracellular iron levels, inducing expression of the proapoptotic protein BCL2L11/BIM, resulting in apoptosis. Involved in innate immunity, possibly by sequestrating iron, leading to limit bacterial growth.<ref>PMID:12453413</ref>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+Siderocalin (also lipocalin 2, NGAL or 24p3) binds iron as complexes with specific siderophores, which are low molecular weight, ferric ion-specific chelators. In innate immunity, siderocalin slows the growth of infecting bacteria by sequestering bacterial ferric siderophores. Siderocalin also binds simple catechols, which can serve as siderophores in the damaged urinary tract. Siderocalin has also been proposed to alter cellular iron trafficking, for instance, driving apoptosis through iron efflux via BOCT. An endogenous siderophore composed of gentisic acid (2,5-dihydroxybenzoic acid) substituents was proposed to mediate cellular efflux. However, binding studies reported herein contradict the proposal that gentisic acid forms high-affinity ternary complexes with siderocalin and iron, or that gentisic acid can serve as an endogenous siderophore at neutral pH. We also demonstrate that siderocalin does not induce cellular iron efflux or stimulate apoptosis, questioning the role siderocalin plays in modulating iron metabolism.
-===The structure of human Siderocalin bound to the bacterial siderophore 2,3-DHBA===
+Siderocalin/Lcn2/NGAL/24p3 does not drive apoptosis through gentisic acid mediated iron withdrawal in hematopoietic cell lines.,Correnti C, Richardson V, Sia AK, Bandaranayake AD, Ruiz M, Suryo Rahmanto Y, Kovacevic Z, Clifton MC, Holmes MA, Kaiser BK, Barasch J, Raymond KN, Richardson DR, Strong RK PLoS One. 2012;7(8):e43696. doi: 10.1371/journal.pone.0043696. Epub 2012 Aug 21. PMID:22928018<ref>PMID:22928018</ref>
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
+</div>
+<div class="pdbe-citations 3u0d" style="background-color:#fffaf0;"></div>
-==About this Structure==
+==See Also==
-[[3u0d]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3U0D OCA].
+*[[Neutrophil gelatinase-associated lipocalin|Neutrophil gelatinase-associated lipocalin]]
+*[[Siderocalin 3D structures|Siderocalin 3D structures]]
+== References ==
+<references/>
+__TOC__
+</StructureSection>
 [[Category: Homo sapiens]]
-[[Category: SSGCID, Seattle Structural Genomics Center for Infectious Disease.]]
+[[Category: Large Structures]]
-[[Category: Antimicrobial protein]]
-[[Category: Beta-barrel]]
-[[Category: Seattle structural genomics center for infectious disease]]
-[[Category: Siderophore]]
-[[Category: Ssgcid]]
-[[Category: Structural genomic]]
-[[Category: Transport protein]]