3cmp

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==Crystal structure of Siderocalin (NGAL, Lipocalin 2) K125A mutant complexed with Ferric Enterobactin==
==Crystal structure of Siderocalin (NGAL, Lipocalin 2) K125A mutant complexed with Ferric Enterobactin==
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<StructureSection load='3cmp' size='340' side='right' caption='[[3cmp]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
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<StructureSection load='3cmp' size='340' side='right'caption='[[3cmp]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[3cmp]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. The January 2016 RCSB PDB [http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Siderocalin'' by David Goodsell is [http://dx.doi.org/10.2210/rcsb_pdb/mom_2016_1 10.2210/rcsb_pdb/mom_2016_1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3CMP OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3CMP FirstGlance]. <br>
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<table><tr><td colspan='2'>[[3cmp]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. The January 2016 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Siderocalin'' by David Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2016_1 10.2210/rcsb_pdb/mom_2016_1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3CMP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3CMP FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=DBH:2,3-DIHYDROXY-BENZOIC+ACID'>DBH</scene>, <scene name='pdbligand=EB4:N,N,N-[(3S,7S,11S)-2,6,10-TRIOXO-1,5,9-TRIOXACYCLODODECANE-3,7,11-TRIYL]TRIS(2,3-DIHYDROXYBENZAMIDE)'>EB4</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=DBH:2,3-DIHYDROXY-BENZOIC+ACID'>DBH</scene>, <scene name='pdbligand=EB4:N,N,N-[(3S,7S,11S)-2,6,10-TRIOXO-1,5,9-TRIOXACYCLODODECANE-3,7,11-TRIYL]TRIS(2,3-DIHYDROXYBENZAMIDE)'>EB4</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">LCN2, HNL, NGAL ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">LCN2, HNL, NGAL ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
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<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=3cmp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3cmp OCA], [http://pdbe.org/3cmp PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3cmp RCSB], [http://www.ebi.ac.uk/pdbsum/3cmp PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3cmp ProSAT]</span></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3cmp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3cmp OCA], [https://pdbe.org/3cmp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3cmp RCSB], [https://www.ebi.ac.uk/pdbsum/3cmp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3cmp ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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[[http://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>
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[[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>
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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</StructureSection>
</StructureSection>
[[Category: Human]]
[[Category: Human]]
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[[Category: Large Structures]]
[[Category: RCSB PDB Molecule of the Month]]
[[Category: RCSB PDB Molecule of the Month]]
[[Category: Siderocalin]]
[[Category: Siderocalin]]

Revision as of 19:11, 20 October 2021

Crystal structure of Siderocalin (NGAL, Lipocalin 2) K125A mutant complexed with Ferric Enterobactin

PDB ID 3cmp

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