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1nco
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==STRUCTURE OF THE ANTITUMOR PROTEIN-CHROMOPHORE COMPLEX NEOCARZINOSTATIN== | ==STRUCTURE OF THE ANTITUMOR PROTEIN-CHROMOPHORE COMPLEX NEOCARZINOSTATIN== | ||
| - | <StructureSection load='1nco' size='340' side='right' caption='[[1nco]], [[Resolution|resolution]] 1.80Å' scene=''> | + | <StructureSection load='1nco' size='340' side='right'caption='[[1nco]], [[Resolution|resolution]] 1.80Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[1nco]] is a 2 chain structure with sequence from [ | + | <table><tr><td colspan='2'>[[1nco]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptomyces_carzinostaticus Streptomyces carzinostaticus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NCO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1NCO FirstGlance]. <br> |
| - | </td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CHR:NEOCARZINOSTATIN-CHROMOPHORE'>CHR</scene>, <scene name='pdbligand=MRD:(4R)-2-METHYLPENTANE-2,4-DIOL'>MRD</scene>< | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.8Å</td></tr> |
| - | <tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CHR:NEOCARZINOSTATIN-CHROMOPHORE'>CHR</scene>, <scene name='pdbligand=MRD:(4R)-2-METHYLPENTANE-2,4-DIOL'>MRD</scene></td></tr> |
| - | <table> | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1nco FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1nco OCA], [https://pdbe.org/1nco PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1nco RCSB], [https://www.ebi.ac.uk/pdbsum/1nco PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1nco ProSAT]</span></td></tr> |
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/NCZS_STRCZ NCZS_STRCZ] NCS has antibiotic activity (for Gram-positive bacteria) and antitumor activity (for certain mouse tumors). NCS binds non-covalently to a chromophore which is the cytotoxic and mutagenic component of the antibiotic. The chromophore binds to DNA as a weak intercalator and causes single- and double-strand breaks. | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
Check<jmol> | Check<jmol> | ||
<jmolCheckbox> | <jmolCheckbox> | ||
| - | <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/nc/1nco_consurf.spt"</scriptWhenChecked> | + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/nc/1nco_consurf.spt"</scriptWhenChecked> |
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
<text>to colour the structure by Evolutionary Conservation</text> | <text>to colour the structure by Evolutionary Conservation</text> | ||
</jmolCheckbox> | </jmolCheckbox> | ||
| - | </jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/ | + | </jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1nco ConSurf]. |
<div style="clear:both"></div> | <div style="clear:both"></div> | ||
| - | <div style="background-color:#fffaf0;"> | ||
| - | == Publication Abstract from PubMed == | ||
| - | Structures of the protein-chromophore complex and the apoprotein form of neocarzinostatin were determined at 1.8 angstrom resolution. Neocarzinostatin is composed of a labile chromophore with DNA-cleaving activity and a stabilizing protein. The chromophore displays marked nonlinearity of the triple bonds and is bound noncovalently in a pocket formed by the two protein domains. The chromophore pi-face interacts with the phenyl ring edges of Phe52 and Phe78. The amino sugar and carbonate groups of the chromophore are solvent exposed, whereas the epoxide, acetylene groups, and carbon C-12, the site of nucleophilic thiol addition during chromophore activation, are unexposed. The position of the amino group of the chromophore carbohydrate relative to C-12 supports the idea that the amino group plays a role in thiol activation. | ||
| - | |||
| - | Crystal structure of neocarzinostatin, an antitumor protein-chromophore complex.,Kim KH, Kwon BM, Myers AG, Rees DC Science. 1993 Nov 12;262(5136):1042-6. PMID:8235619<ref>PMID:8235619</ref> | ||
| - | |||
| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| - | </div> | ||
| - | == References == | ||
| - | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| + | [[Category: Large Structures]] | ||
[[Category: Streptomyces carzinostaticus]] | [[Category: Streptomyces carzinostaticus]] | ||
| - | [[Category: Kim | + | [[Category: Kim K-H]] |
| - | [[Category: Kwon | + | [[Category: Kwon B-M]] |
| - | [[Category: Myers | + | [[Category: Myers AG]] |
| - | [[Category: Rees | + | [[Category: Rees DC]] |
| - | + | ||
Current revision
STRUCTURE OF THE ANTITUMOR PROTEIN-CHROMOPHORE COMPLEX NEOCARZINOSTATIN
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