1fr9: Difference between revisions

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-[[Image:1fr9.gif|left|200px]]
- {{Structure
+==STRUCTURE OF E. COLI MOBA==
-|PDB= 1fr9 |SIZE=350|CAPTION= <scene name='initialview01'>1fr9</scene>, resolution 1.65&Aring;
+<StructureSection load='1fr9' size='340' side='right'caption='[[1fr9]], [[Resolution|resolution]] 1.65&Aring;' scene=''>
-|SITE=
+== Structural highlights ==
-|LIGAND= <scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene>
+<table><tr><td colspan='2'>[[1fr9]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FR9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1FR9 FirstGlance]. <br>
-|ACTIVITY=
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.65&#8491;</td></tr>
-|GENE=
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
-|DOMAIN=
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1fr9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1fr9 OCA], [https://pdbe.org/1fr9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1fr9 RCSB], [https://www.ebi.ac.uk/pdbsum/1fr9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1fr9 ProSAT]</span></td></tr>
-|RELATEDENTRY=
+</table>
-|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1fr9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1fr9 OCA], [http://www.ebi.ac.uk/pdbsum/1fr9 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1fr9 RCSB]</span>
+== Function ==
-}}
+[https://www.uniprot.org/uniprot/MOBA_ECOLI MOBA_ECOLI] Transfers a GMP moiety from GTP to Mo-molybdopterin (Mo-MPT) cofactor (Moco or molybdenum cofactor) to form Mo-molybdopterin guanine dinucleotide (Mo-MGD) cofactor. Is also involved in the biosynthesis of the bis-MGD form of the Moco cofactor (Mo-bisMGD) in which the metal is symmetrically ligated by the dithiolene groups of two MGD molecules. Is necessary and sufficient for the in vitro activation of the DMSOR molybdoenzyme that uses the Mo-bisMGD form of molybdenum cofactor, which implies formation and efficient insertion of the cofactor into the enzyme without the need of a chaperone. Is specific for GTP since other nucleotides such as ATP and GMP can not be utilized.<ref>PMID:8020507</ref> <ref>PMID:1648082</ref> <ref>PMID:10978348</ref> <ref>PMID:21081498</ref>
+== Evolutionary Conservation ==
-'''STRUCTURE OF E. COLI MOBA'''
+[[Image:Consurf_key_small.gif|200px|right]]
+Check<jmol>
+  <jmolCheckbox>
-==Overview==
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/fr/1fr9_consurf.spt"</scriptWhenChecked>
-The molybdenum cofactor (Moco) is found in a variety of enzymes present in all phyla and comprises a family of related molecules containing molybdopterin (MPT), a tricyclic pyranopterin with a cis-dithiolene group, as the invariant essential moiety. MPT biosynthesis involves a conserved pathway, but some organisms perform additional reactions that modify MPT. In eubacteria, the cofactor is often present in a dinucleotide form combining MPT and a purine or pyrimidine nucleotide via a pyrophosphate linkage. In Escherichia coli, the MobA protein links a guanosine 5'-phosphate to MPT forming molybdopterin guanine dinucleotide. This reaction requires GTP, MgCl(2), and the MPT form of the cofactor and can efficiently reconstitute Rhodobacter sphaeroides apo-DMSOR, an enzyme that requires molybdopterin guanine dinucleotide for activity. In this paper, we present the crystal structure of MobA, a protein containing 194 amino acids. The MobA monomer has an alpha/beta architecture in which the N-terminal half of the molecule adopts a Rossman fold. The structure of MobA has striking similarity to Bacillus subtilis SpsA, a nucleotide-diphospho-sugar transferase involved in sporulation. The cocrystal structure of MobA and GTP reveals that the GTP-binding site is located in the N-terminal half of the molecule. Conserved residues located primarily in three signature sequence motifs form crucial interactions with the bound nucleotide. The binding site for MPT is located adjacent to the GTP-binding site in the C-terminal half of the molecule, which contains another set of conserved residues presumably involved in MPT binding.
+    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
+    <text>to colour the structure by Evolutionary Conservation</text>
-==About this Structure==
+  </jmolCheckbox>
-FR9 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FR9 OCA].
+</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=1fr9 ConSurf].
+<div style="clear:both"></div>
-==Reference==
+== References ==
-The crystal structure of the Escherichia coli MobA protein provides insight into molybdopterin guanine dinucleotide biosynthesis., Lake MW, Temple CA, Rajagopalan KV, Schindelin H, J Biol Chem. 2000 Dec 22;275(51):40211-7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10978347 10978347]
+<references/>
+__TOC__
+</StructureSection>
 [[Category: Escherichia coli]]
-[[Category: Single protein]]
+[[Category: Large Structures]]
-[[Category: Lake, M W.]]
+[[Category: Lake MW]]
-[[Category: Rajagopalan, K V.]]
+[[Category: Rajagopalan KV]]
-[[Category: Schindelin, H.]]
+[[Category: Schindelin H]]
-[[Category: Temple, C A.]]
+[[Category: Temple CA]]
-[[Category: moco biosynthesis]]
-[[Category: molybdenum cofactor (moco)]]
-[[Category: molybdopterin (mpt)]]
-[[Category: molybdopterin guanine dinucleotide (mgd)]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 20:28:40 2008''