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4xgw
From Proteopedia
(Difference between revisions)
(New page: '''Unreleased structure''' The entry 4xgw is ON HOLD Authors: Tomchick, D.R., Brautigam, C.A., Deka, R.K., Norgard, M.V. Description: Crystal structure of Escherichia coli Flavin traff...) |
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| - | '''Unreleased structure''' | ||
| - | + | ==Crystal structure of Escherichia coli Flavin trafficking protein, an FMN transferase, E169K mutant== | |
| + | <StructureSection load='4xgw' size='340' side='right'caption='[[4xgw]], [[Resolution|resolution]] 1.75Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[4xgw]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli_K-12 Escherichia coli K-12]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4XGW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4XGW FirstGlance]. <br> | ||
| + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.747Å</td></tr> | ||
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr> | ||
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4xgw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4xgw OCA], [https://pdbe.org/4xgw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4xgw RCSB], [https://www.ebi.ac.uk/pdbsum/4xgw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4xgw ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/APBE_ECOLI APBE_ECOLI] Involved in the conversion of aminoimidazole ribotide (AIR), a purine intermediate, to the 4-amino-5-hydroxymethyl-2-methyl pyrimidine (HMP) moiety of thiamine (By similarity). | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | We recently reported a flavin-trafficking protein (Ftp) in the syphilis spirochete Treponema pallidum (Ftp_Tp) as the first bacterial metal-dependent FAD pyrophosphatase that hydrolyzes FAD into AMP and FMN in the periplasm. Orthologs of Ftp_Tp in other bacteria (formerly ApbE) appear to lack this hydrolytic activity; rather, they flavinylate the redox subunit, NqrC, via their metal-dependent FMN transferase activity. However, nothing has been known about the nature or mechanism of metal-dependent Ftp catalysis in either Nqr- or Rnf-redox-containing bacteria. In the current study, we identified a bimetal center in the crystal structure of Escherichia coli Ftp (Ftp_Ec) and show via mutagenesis that a single amino acid substitution converts it from an FAD-binding protein to a Mg2+ -dependent FAD pyrophosphatase (Ftp_Tp-like). Furthermore, in the presence of protein substrates, both types of Ftps are capable of flavinylating periplasmic redox-carrying proteins (e.g., RnfG_Ec) via the metal-dependent covalent attachment of FMN. A high-resolution structure of the Ftp-mediated flavinylated protein of Shewanella oneidensis NqrC identified an essential lysine in phosphoester-threonyl-FMN bond formation in the posttranslationally modified flavoproteins. Together, these discoveries broaden our understanding of the physiological capabilities of the bacterial periplasm, and they also clarify a possible mechanism by which flavoproteins are generated. | ||
| - | + | Molecular insights into the enzymatic diversity of flavin-trafficking protein (Ftp; formerly ApbE) in flavoprotein biogenesis in the bacterial periplasm.,Deka RK, Brautigam CA, Liu WZ, Tomchick DR, Norgard MV Microbiologyopen. 2015 Dec 2. doi: 10.1002/mbo3.306. PMID:26626129<ref>PMID:26626129</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | [[Category: | + | </div> |
| - | [[Category: | + | <div class="pdbe-citations 4xgw" style="background-color:#fffaf0;"></div> |
| - | [[Category: | + | == References == |
| - | [[Category: | + | <references/> |
| - | [[Category: | + | __TOC__ |
| + | </StructureSection> | ||
| + | [[Category: Escherichia coli K-12]] | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Brautigam CA]] | ||
| + | [[Category: Deka RK]] | ||
| + | [[Category: Norgard MV]] | ||
| + | [[Category: Tomchick DR]] | ||
Current revision
Crystal structure of Escherichia coli Flavin trafficking protein, an FMN transferase, E169K mutant
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