2bkv: Difference between revisions

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-[[Image:2bkv.gif|left|200px]]
- {{Structure
+==Structure and kinetics of a monomeric glucosamine-6-phosphate deaminase: missing link of the NagB superfamily==
-|PDB= 2bkv |SIZE=350|CAPTION= <scene name='initialview01'>2bkv</scene>, resolution 1.504&Aring;
+<StructureSection load='2bkv' size='340' side='right'caption='[[2bkv]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
-|SITE= <scene name='pdbsite=AC1:Pga+Binding+Site+For+Chain+B'>AC1</scene>
+== Structural highlights ==
-|LIGAND= <scene name='pdbligand=PGA:2-PHOSPHOGLYCOLIC ACID'>PGA</scene>
+<table><tr><td colspan='2'>[[2bkv]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_subtilis Bacillus subtilis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BKV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2BKV FirstGlance]. <br>
-|ACTIVITY= [http://en.wikipedia.org/wiki/Glucosamine-6-phosphate_deaminase Glucosamine-6-phosphate deaminase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.5.99.6 3.5.99.6]
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.5&#8491;</td></tr>
-|GENE=
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PGA:2-PHOSPHOGLYCOLIC+ACID'>PGA</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=2bkv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bkv OCA], [https://pdbe.org/2bkv PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2bkv RCSB], [https://www.ebi.ac.uk/pdbsum/2bkv PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2bkv ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/NAGB_BACSU NAGB_BACSU] Catalyzes the reversible isomerization-deamination of glucosamine 6-phosphate (GlcN6P) to form fructose 6-phosphate (Fru6P) and ammonium ion (By similarity).
+== Evolutionary Conservation ==
+[[Image:Consurf_key_small.gif|200px|right]]
+Check<jmol>
+  <jmolCheckbox>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/bk/2bkv_consurf.spt"</scriptWhenChecked>
+    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
+    <text>to colour the structure by Evolutionary Conservation</text>
+  </jmolCheckbox>
+</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=2bkv ConSurf].
+<div style="clear:both"></div>
-'''STRUCTURE AND KINETICS OF A MONOMERIC GLUCOSAMINE-6-PHOSPHATE DEAMINASE: MISSING LINK OF THE NAGB SUPERFAMILY'''
+==See Also==
+*[[Deaminase 3D structures|Deaminase 3D structures]]
+__TOC__
-==Overview==
+</StructureSection>
-Glucosamine 6-phosphate is converted to fructose 6-phosphate and ammonia by the action of the enzyme glucosamine 6-phosphate deaminase, NagB. This reaction is the final step in the specific GlcNAc utilization pathway and thus decides the metabolic fate of GlcNAc. Sequence analyses suggest that the NagB "superfamily" consists of three main clusters: multimeric and allosterically regulated glucosamine-6-phosphate deaminases (exemplified by Escherichia coli NagB), phosphogluconolactonases, and monomeric hexosamine-6-phosphate deaminases. Here we present the three-dimensional structure and kinetics of the first member of this latter group, the glucosamine-6-phosphate deaminase, NagB, from Bacillus subtilis. The structures were determined in ligand-complexed forms at resolutions around 1.4 Angstroms. BsuNagB is monomeric in solution and as a consequence is active (k(cat) 28 s(-1), K(m(app)) 0.13 mM) without the need for allosteric activators. A decrease in activity at high substrate concentrations may reflect substrate inhibition (with K(i) of approximately 4 mM). The structure completes the NagB superfamily structural landscape and thus allows further interrogation of genomic data in terms of the regulation of NagB and the metabolic fate(s) of glucosamine 6-phosphate.
-==About this Structure==
-BKV is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Bacillus_subtilis Bacillus subtilis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BKV OCA].
-==Reference==
-Structure and kinetics of a monomeric glucosamine 6-phosphate deaminase: missing link of the NagB superfamily?, Vincent F, Davies GJ, Brannigan JA, J Biol Chem. 2005 May 20;280(20):19649-55. Epub 2005 Mar 8. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15755726 15755726]
 [[Category: Bacillus subtilis]]
-[[Category: Glucosamine-6-phosphate deaminase]]
+[[Category: Large Structures]]
-[[Category: Single protein]]
+[[Category: Brannigan JA]]
-[[Category: Brannigan, J A.]]
+[[Category: Davies GJ]]
-[[Category: Davies, G J.]]
+[[Category: Vincent F]]
-[[Category: Vincent, F.]]
-[[Category: PGA]]
-[[Category: fructose-6-phosphate]]
-[[Category: hydrolase]]
-[[Category: substrate inhibition]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 16:03:15 2008''