4oxf

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==Structure of ECP in complex with citrate ions at 1.50 Angstroms==
==Structure of ECP in complex with citrate ions at 1.50 Angstroms==
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<StructureSection load='4oxf' size='340' side='right' caption='[[4oxf]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
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<StructureSection load='4oxf' size='340' side='right'caption='[[4oxf]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[4oxf]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4OXF OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4OXF FirstGlance]. <br>
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<table><tr><td colspan='2'>[[4oxf]] is a 2 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=4OXF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4OXF 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=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene></td></tr>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.5&#8491;</td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4a2y|4a2y]], [[4owz|4owz]], [[4oxb|4oxb]]</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene></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=4oxf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4oxf OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4oxf RCSB], [http://www.ebi.ac.uk/pdbsum/4oxf PDBsum]</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=4oxf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4oxf OCA], [https://pdbe.org/4oxf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4oxf RCSB], [https://www.ebi.ac.uk/pdbsum/4oxf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4oxf ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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[[http://www.uniprot.org/uniprot/ECP_HUMAN ECP_HUMAN]] Cytotoxin and helminthotoxin with low-efficiency ribonuclease activity. Possesses a wide variety of biological activities. Exhibits antibacterial activity, including cytoplasmic membrane depolarization of preferentially Gram-negative, but also Gram-positive strains. Promotes E.coli outer membrane detachment, alteration of the overall cell shape and partial loss of cell content.<ref>PMID:2501794</ref> <ref>PMID:19450231</ref>
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[https://www.uniprot.org/uniprot/ECP_HUMAN ECP_HUMAN] Cytotoxin and helminthotoxin with low-efficiency ribonuclease activity. Possesses a wide variety of biological activities. Exhibits antibacterial activity, including cytoplasmic membrane depolarization of preferentially Gram-negative, but also Gram-positive strains. Promotes E.coli outer membrane detachment, alteration of the overall cell shape and partial loss of cell content.<ref>PMID:2501794</ref> <ref>PMID:19450231</ref>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Eosinophil cationic protein (ECP; RNase 3) is a human ribonuclease found only in eosinophil leukocytes that belongs to the RNase A superfamily. This enzyme is bactericidal, helminthotoxic and cytotoxic to mammalian cells and tissues. The protein has been cloned, heterologously overexpressed, purified and crystallized. Its crystal structure has been determined and refined using data up to 1. 75 A resolution. The molecule displays the alpha+beta folding topology typical for members of the ribonuclease A superfamily. The catalytic active site residues are conserved with respect to other ribonucleases of the superfamily but some differences appear at substrate recognition subsites, which may account, in part, for the low catalytic activity. Most strikingly, 19 surface-located arginine residues confer a strong basic character to the protein. The high concentration of positive charges and the particular orientation of the side-chains of these residues may also be related to the low activity of ECP as a ribonuclease and provides an explanation for its unique cytotoxic role through cell membrane disruption.
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Three-dimensional crystal structure of human eosinophil cationic protein (RNase 3) at 1.75 A resolution.,Mallorqui-Fernandez G, Pous J, Peracaula R, Aymami J, Maeda T, Tada H, Yamada H, Seno M, de Llorens R, Gomis-Ruth FX, Coll M J Mol Biol. 2000 Jul 28;300(5):1297-307. PMID:10903870<ref>PMID:10903870</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Blanco, J A]]
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[[Category: Homo sapiens]]
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[[Category: Boix, E]]
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[[Category: Large Structures]]
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[[Category: Moussaoui, M]]
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[[Category: Blanco JA]]
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[[Category: Salazar, V A]]
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[[Category: Boix E]]
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[[Category: Rnase 3]]
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[[Category: Moussaoui M]]
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[[Category: Salazar VA]]

Current revision

Structure of ECP in complex with citrate ions at 1.50 Angstroms

PDB ID 4oxf

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