1frw

From Proteopedia

(Difference between revisions)

Revision as of 20:25, 9 September 2015

STRUCTURE OF E. COLI MOBA WITH BOUND GTP AND MANGANESE

Structural highlights

1frw is a 1 chain structure with sequence from "bacillus_coli"_migula_1895 "bacillus coli" migula 1895. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, , ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[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.^[1] ^[2] ^[3] ^[4]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

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.

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:10978347^[5]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Palmer T, Vasishta A, Whitty PW, Boxer DH. Isolation of protein FA, a product of the mob locus required for molybdenum cofactor biosynthesis in Escherichia coli. Eur J Biochem. 1994 Jun 1;222(2):687-92. PMID:8020507
↑ Johnson JL, Indermaur LW, Rajagopalan KV. Molybdenum cofactor biosynthesis in Escherichia coli. Requirement of the chlB gene product for the formation of molybdopterin guanine dinucleotide. J Biol Chem. 1991 Jul 5;266(19):12140-5. PMID:1648082
↑ Temple CA, Rajagopalan KV. Mechanism of assembly of the Bis(Molybdopterin guanine dinucleotide)molybdenum cofactor in Rhodobacter sphaeroides dimethyl sulfoxide reductase. J Biol Chem. 2000 Dec 22;275(51):40202-10. PMID:10978348 doi:http://dx.doi.org/10.1074/jbc.M007407200
↑ Neumann M, Seduk F, Iobbi-Nivol C, Leimkuhler S. Molybdopterin dinucleotide biosynthesis in Escherichia coli: identification of amino acid residues of molybdopterin dinucleotide transferases that determine specificity for binding of guanine or cytosine nucleotides. J Biol Chem. 2011 Jan 14;286(2):1400-8. doi: 10.1074/jbc.M110.155671. Epub 2010, Nov 16. PMID:21081498 doi:http://dx.doi.org/10.1074/jbc.M110.155671
↑ Lake MW, Temple CA, Rajagopalan KV, Schindelin H. The crystal structure of the Escherichia coli MobA protein provides insight into molybdopterin guanine dinucleotide biosynthesis. J Biol Chem. 2000 Dec 22;275(51):40211-7. PMID:10978347 doi:http://dx.doi.org/10.1074/jbc.M007406200

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1frw"

@@ Line 2: / Line 2: @@
 <StructureSection load='1frw' size='340' side='right' caption='[[1frw]], [[Resolution|resolution]] 1.75&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1frw]] is a 1 chain structure with 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=1FRW OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1FRW FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1frw]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FRW OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1FRW FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=GTP:GUANOSINE-5-TRIPHOSPHATE'>GTP</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1frw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1frw OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1frw RCSB], [http://www.ebi.ac.uk/pdbsum/1frw PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1frw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1frw OCA], [http://pdbe.org/1frw PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1frw RCSB], [http://www.ebi.ac.uk/pdbsum/1frw PDBsum]</span></td></tr>
 </table>
 == Function ==
@@ Line 26: / Line 26: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 1frw" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>
 __TOC__
 </StructureSection>
-[[Category: Escherichia coli]]
+[[Category: Bacillus coli migula 1895]]
 [[Category: Lake, M W]]
 [[Category: Rajagopalan, K V]]

1frw

From Proteopedia

Revision as of 20:25, 9 September 2015

STRUCTURE OF E. COLI MOBA WITH BOUND GTP AND MANGANESE

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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