4fgc

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
Current revision (15:24, 14 March 2024) (edit) (undo)
 
(2 intermediate revisions not shown.)
Line 1: Line 1:
 +
==Crystal Structure of Active Site Mutant C55A of Nitrile Reductase QueF, Bound to Substrate PreQ0==
==Crystal Structure of Active Site Mutant C55A of Nitrile Reductase QueF, Bound to Substrate PreQ0==
-
<StructureSection load='4fgc' size='340' side='right' caption='[[4fgc]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
+
<StructureSection load='4fgc' size='340' side='right'caption='[[4fgc]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
-
<table><tr><td colspan='2'>[[4fgc]] is a 5 chain structure with sequence from [http://en.wikipedia.org/wiki/Bacillus_subtilis_subsp._subtilis Bacillus subtilis subsp. subtilis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FGC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4FGC FirstGlance]. <br>
+
<table><tr><td colspan='2'>[[4fgc]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_subtilis_subsp._subtilis_str._168 Bacillus subtilis subsp. subtilis str. 168]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FGC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4FGC FirstGlance]. <br>
-
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=PE4:2-{2-[2-(2-{2-[2-(2-ETHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHOXY]-ETHOXY}-ETHANOL'>PE4</scene>, <scene name='pdbligand=PQ0:2-AMINO-4-OXO-4,7-DIHYDRO-3H-PYRROLO[2,3-D]PYRIMIDINE-5-CARBONITRILE'>PQ0</scene></td></tr>
+
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.498&#8491;</td></tr>
-
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4f8b|4f8b]]</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=PE4:2-{2-[2-(2-{2-[2-(2-ETHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHOXY]-ETHOXY}-ETHANOL'>PE4</scene>, <scene name='pdbligand=PQ0:2-AMINO-4-OXO-4,7-DIHYDRO-3H-PYRROLO[2,3-D]PYRIMIDINE-5-CARBONITRILE'>PQ0</scene></td></tr>
-
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">BSU13750, queF, ykvM ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=135461 Bacillus subtilis subsp. subtilis])</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=4fgc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fgc OCA], [https://pdbe.org/4fgc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4fgc RCSB], [https://www.ebi.ac.uk/pdbsum/4fgc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4fgc ProSAT]</span></td></tr>
-
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/PreQ(1)_synthase PreQ(1) synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.7.1.13 1.7.1.13] </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=4fgc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fgc OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4fgc RCSB], [http://www.ebi.ac.uk/pdbsum/4fgc PDBsum]</span></td></tr>
+
</table>
</table>
-
<div style="background-color:#fffaf0;">
+
== Function ==
-
== Publication Abstract from PubMed ==
+
[https://www.uniprot.org/uniprot/QUEF_BACSU QUEF_BACSU] Catalyzes the NADPH-dependent reduction of 7-cyano-7-deazaguanine (preQ0) to 7-aminomethyl-7-deazaguanine (preQ1), a late step in the queuosine pathway.<ref>PMID:15767583</ref> <ref>PMID:17929836</ref>
-
The enzyme QueF catalyzes the reduction of the nitrile group of 7-cyano-7-deazaguanine (preQ0) to 7-aminomethyl-7-deazaguanine (preQ1), the only nitrile reduction reaction known in Biology. We describe here two crystal structures of Bacillus subtilis QueF, one of the wild-type enzyme in complex with the substrate preQ0, trapped as a covalent thioimide, a putative intermediate in the reaction, and the second of the Cys55Ala mutant in complex with the substrate preQ0 bound non-covalently. The QueF enzyme forms an asymmetric tunnel-fold homodecamer of two head-to-head facing pentameric subunits, harboring ten active sites at the inter-subunit interfaces. In both structures a preQ0 molecule is bound at eight sites, and in the wild-type enzyme it forms a thioimide covalent linkage to the catalytic residue Cys55. Both structural and transient kinetic data show that preQ0 binding, not thioimide formation, induces a large conformational change in and closure of the active site. Based on these data we propose a mechanism for the activation of the Cys55 nucleophile and subsequent hydride transfer.
+
-
 
+
-
Structural Basis of Biological Nitrile Reduction.,Chikwana VM, Stec B, Lee BW, de Crecy-Lagard V, Iwata-Reuyl D, Swairjo MA J Biol Chem. 2012 Jul 11. PMID:22787148<ref>PMID:22787148</ref>
+
-
 
+
-
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
+
-
</div>
+
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
-
[[Category: Bacillus subtilis subsp. subtilis]]
+
[[Category: Bacillus subtilis subsp. subtilis str. 168]]
-
[[Category: Stec, B]]
+
[[Category: Large Structures]]
-
[[Category: Swairjo, M A]]
+
[[Category: Stec B]]
-
[[Category: Beta barrel]]
+
[[Category: Swairjo MA]]
-
[[Category: Nadph binding]]
+
-
[[Category: Oxidoreductase]]
+
-
[[Category: Pterin binding fold]]
+
-
[[Category: Trna modification enzyme]]
+
-
[[Category: Tunnel fold]]
+

Current revision

Crystal Structure of Active Site Mutant C55A of Nitrile Reductase QueF, Bound to Substrate PreQ0

PDB ID 4fgc

Drag the structure with the mouse to rotate

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/4fgc"
Personal tools