1n05

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[[Image:1n05.gif|left|200px]]
 
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{{Structure
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==Crystal Structure of Schizosaccharomyces pombe Riboflavin Kinase Reveals a Novel ATP and Riboflavin Binding Fold==
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|PDB= 1n05 |SIZE=350|CAPTION= <scene name='initialview01'>1n05</scene>, resolution 2.1&Aring;
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<StructureSection load='1n05' size='340' side='right'caption='[[1n05]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND=
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<table><tr><td colspan='2'>[[1n05]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Schizosaccharomyces_pombe Schizosaccharomyces pombe]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1N05 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1N05 FirstGlance]. <br>
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|ACTIVITY= [http://en.wikipedia.org/wiki/Riboflavin_kinase Riboflavin kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.1.26 2.7.1.26]
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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]] 2.1&#8491;</td></tr>
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|GENE= SPCC18.16C ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4896 Schizosaccharomyces pombe])
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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=1n05 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1n05 OCA], [https://pdbe.org/1n05 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1n05 RCSB], [https://www.ebi.ac.uk/pdbsum/1n05 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1n05 ProSAT]</span></td></tr>
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}}
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</table>
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== Function ==
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'''Crystal Structure of Schizosaccharomyces pombe Riboflavin Kinase Reveals a Novel ATP and Riboflavin Binding Fold'''
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[https://www.uniprot.org/uniprot/RIFK_SCHPO RIFK_SCHPO] Catalyzes the phosphorylation of riboflavin (vitamin B2) to form flavin mononucleotide (FMN) coenzyme.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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==Overview==
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Check<jmol>
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The essential redox cofactors riboflavin monophosphate (FMN) and flavin adenine dinucleotide (FAD) are synthesised from their precursor, riboflavin, in sequential reactions by the metal-dependent riboflavin kinase and FAD synthetase. Here, we describe the 1.6A crystal structure of the Schizosaccharomyces pombe riboflavin kinase. The enzyme represents a novel family of phosphoryl transferring enzymes. It is a monomer comprising a central beta-barrel clasped on one side by two C-terminal helices that display an L-like shape. The opposite side of the beta-barrel serves as a platform for substrate binding as demonstrated by complexes with ADP and FMN. Formation of the ATP-binding site requires significant rearrangements in a short alpha-helix as compared to the substrate free form. The diphosphate moiety of ADP is covered by the glycine-rich flap I formed from parts of this alpha-helix. In contrast, no significant changes are observed upon binding of riboflavin. The ribityl side-chain might be covered by a rather flexible flap II. The unusual metal-binding site involves, in addition to the ADP phosphates, only the strictly conserved Thr45. This may explain the preference for zinc observed in vitro.
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/n0/1n05_consurf.spt"</scriptWhenChecked>
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==About this Structure==
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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1N05 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Schizosaccharomyces_pombe Schizosaccharomyces pombe]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1N05 OCA].
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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==Reference==
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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=1n05 ConSurf].
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Crystal structure of Schizosaccharomyces pombe riboflavin kinase reveals a novel ATP and riboflavin-binding fold., Bauer S, Kemter K, Bacher A, Huber R, Fischer M, Steinbacher S, J Mol Biol. 2003 Mar 7;326(5):1463-73. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12595258 12595258]
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<div style="clear:both"></div>
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[[Category: Riboflavin kinase]]
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
[[Category: Schizosaccharomyces pombe]]
[[Category: Schizosaccharomyces pombe]]
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[[Category: Single protein]]
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[[Category: Bacher A]]
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[[Category: Bacher, A.]]
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[[Category: Bauer S]]
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[[Category: Bauer, S.]]
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[[Category: Fischer M]]
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[[Category: Fischer, M.]]
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[[Category: Huber R]]
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[[Category: Huber, R.]]
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[[Category: Kemter K]]
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[[Category: Kemter, K.]]
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[[Category: Steinbacher S]]
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[[Category: Steinbacher, S.]]
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[[Category: flavin cofactor]]
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[[Category: kinase]]
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[[Category: metal binding]]
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[[Category: phosphoryl transferase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 12:50:24 2008''
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Current revision

Crystal Structure of Schizosaccharomyces pombe Riboflavin Kinase Reveals a Novel ATP and Riboflavin Binding Fold

PDB ID 1n05

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