2d34

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[[Image:2d34.gif|left|200px]]
 
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==FORMALDEHYDE CROSS-LINKS DAUNORUBICIN AND DNA EFFICIENTLY: HPLC AND X-RAY DIFFRACTION STUDIES==
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The line below this paragraph, containing "STRUCTURE_2d34", creates the "Structure Box" on the page.
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<StructureSection load='2d34' size='340' side='right'caption='[[2d34]], [[Resolution|resolution]] 1.40&Aring;' scene=''>
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[2d34]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2D34 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2D34 FirstGlance]. <br>
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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]] 1.4&#8491;</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=A40:N2-METHYL+2-DEOXYADENOSINE+5-MONOPHOSPHATE'>A40</scene>, <scene name='pdbligand=DM1:DAUNOMYCIN'>DM1</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
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{{STRUCTURE_2d34| PDB=2d34 | SCENE= }}
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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=2d34 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2d34 OCA], [https://pdbe.org/2d34 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2d34 RCSB], [https://www.ebi.ac.uk/pdbsum/2d34 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2d34 ProSAT]</span></td></tr>
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</table>
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'''FORMALDEHYDE CROSS-LINKS DAUNORUBICIN AND DNA EFFICIENTLY: HPLC AND X-RAY DIFFRACTION STUDIES'''
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
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==Overview==
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[[Category: Gao Y-G]]
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Formaldehyde (HCHO) cross-links the anticancer drug daunorubicin (DAU) to DNA efficiently. When DAU is mixed with DNA hexamers, d(CGCGCG) and d(CGTDCG), in the presence of HCHO, stable covalent adducts of DNA are formed, as shown by the HPLC analyses. The major adducts are identical with the materials in the respective crystals which can be readily obtained from the 1:1 mixture of DAU-d(CGCGCG) and DAU-d(CGTDCG) plus HCHO, but not from the solution without HCHO. The high-resolution (1.5 A) X-ray crystal structure of those adducts shows unambiguously that they contain a covalent methylene bridge between the N3' of daunosamine and the N2 of the guanine or 2-aminoadenine. The perfect juxtaposition of the two amino groups in the minor groove of the complex provides a template for an efficient addition of HCHO. The methylene bridge does not perturb the conformation of the drug-DNA complex, when compared to the structure of DAU-d(CGTACG). The results suggest new approaches for synthesizing a new type of potential anticancer drug by attaching a reactive (e.g., alkylating) functional group at the N3' amino position of daunorubicin/doxorubicin. The stable drug-DNA adduct may be useful as probes for other biological studies.
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[[Category: Li Y-K]]
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[[Category: Liaw Y-C]]
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==About this Structure==
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[[Category: Wang AH-J]]
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Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2D34 OCA].
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==Reference==
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Formaldehyde cross-links daunorubicin and DNA efficiently: HPLC and X-ray diffraction studies., Wang AH, Gao YG, Liaw YC, Li YK, Biochemistry. 1991 Apr 23;30(16):3812-5. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/2018756 2018756]
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[[Category: Gao, Y G.]]
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[[Category: Li, Y K.]]
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[[Category: Liaw, Y C.]]
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[[Category: Wang, A H.J.]]
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[[Category: Complexed with drug]]
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[[Category: Double helix]]
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[[Category: Modified]]
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[[Category: Right handed dna]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 23:36:42 2008''
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Current revision

FORMALDEHYDE CROSS-LINKS DAUNORUBICIN AND DNA EFFICIENTLY: HPLC AND X-RAY DIFFRACTION STUDIES

PDB ID 2d34

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