1dcp

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[[Image:1dcp.jpg|left|200px]]
 
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{{Structure
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==DCOH, A BIFUNCTIONAL PROTEIN-BINDING TRANSCRIPTIONAL COACTIVATOR, COMPLEXED WITH BIOPTERIN==
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|PDB= 1dcp |SIZE=350|CAPTION= <scene name='initialview01'>1dcp</scene>, resolution 2.30&Aring;
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<StructureSection load='1dcp' size='340' side='right'caption='[[1dcp]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=HBI:7,8-DIHYDROBIOPTERIN'>HBI</scene>
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<table><tr><td colspan='2'>[[1dcp]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. The August 2015 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Tetrahydrobiopterin Biosynthesis'' by David Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2015_8 10.2210/rcsb_pdb/mom_2015_8]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DCP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1DCP FirstGlance]. <br>
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|ACTIVITY= [http://en.wikipedia.org/wiki/4a-hydroxytetrahydrobiopterin_dehydratase 4a-hydroxytetrahydrobiopterin dehydratase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.96 4.2.1.96]
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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]] 2.3&#8491;</td></tr>
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|GENE=
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=HBI:7,8-DIHYDROBIOPTERIN'>HBI</scene></td></tr>
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}}
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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=1dcp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dcp OCA], [https://pdbe.org/1dcp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1dcp RCSB], [https://www.ebi.ac.uk/pdbsum/1dcp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1dcp ProSAT]</span></td></tr>
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</table>
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'''DCOH, A BIFUNCTIONAL PROTEIN-BINDING TRANSCRIPTIONAL COACTIVATOR, COMPLEXED WITH BIOPTERIN'''
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== Function ==
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[https://www.uniprot.org/uniprot/PHS_RAT PHS_RAT] Involved in tetrahydrobiopterin biosynthesis. Seems to both prevent the formation of 7-pterins and accelerate the formation of quinonoid-BH2. Coactivator for HNF1A-dependent transcription. Regulates the dimerization of homeodomain protein HNF1A and enhances its transcriptional activity.<ref>PMID:1763325</ref> <ref>PMID:8444860</ref>
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== Evolutionary Conservation ==
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==Overview==
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[[Image:Consurf_key_small.gif|200px|right]]
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DCoH, the dimerization cofactor of hepatocyte nuclear factor 1 (HNF-1), functions as both a transcriptional coactivator and a pterin dehydratase. To probe the relationship between these two functions, the X-ray crystal structures of the free enzyme and its complex with the product analogue 7,8-dihydrobiopterin were refined at 2.3 A resolution. The ligand binds at four sites per tetrameric enzyme, with little apparent conformational change in the protein. Each active-site cleft is located in a subunit interface, adjacent to a prominent saddle motif that has structural similarities to the TATA binding protein. The pterin binds within an arch of aromatic residues that extends across one dimer interface. The bound ligand makes contacts to three conserved histidines, and this arrangement restricts proposals for the enzymatic mechanism of dehydration. The dihedral symmetry of DCoH suggests that binding to the dimerization domain of HNF-1 likely involves the superposition of two-fold rotation axes of the two proteins.
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Check<jmol>
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<jmolCheckbox>
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==About this Structure==
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/dc/1dcp_consurf.spt"</scriptWhenChecked>
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1DCP is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DCP OCA].
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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==Reference==
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</jmolCheckbox>
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High-resolution structures of the bifunctional enzyme and transcriptional coactivator DCoH and its complex with a product analogue., Cronk JD, Endrizzi JA, Alber T, Protein Sci. 1996 Oct;5(10):1963-72. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/8897596 8897596]
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</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=1dcp ConSurf].
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[[Category: 4a-hydroxytetrahydrobiopterin dehydratase]]
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<div style="clear:both"></div>
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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
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[[Category: RCSB PDB Molecule of the Month]]
[[Category: Rattus norvegicus]]
[[Category: Rattus norvegicus]]
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[[Category: Single protein]]
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[[Category: Tetrahydrobiopterin Biosynthesis]]
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[[Category: Alber, T.]]
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[[Category: Alber T]]
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[[Category: Cronk, J D.]]
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[[Category: Cronk JD]]
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[[Category: Endrizzi, J A.]]
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[[Category: Endrizzi JA]]
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[[Category: HBI]]
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[[Category: 4a-carbinolamine dehydratase]]
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[[Category: dehydratase]]
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[[Category: dimerization cofactor]]
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[[Category: transcriptional stimulator]]
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[[Category: transregulator of homeodomain protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 10:36:26 2008''
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Current revision

DCOH, A BIFUNCTIONAL PROTEIN-BINDING TRANSCRIPTIONAL COACTIVATOR, COMPLEXED WITH BIOPTERIN

PDB ID 1dcp

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