1im5: Difference between revisions

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[[Image:1im5.jpg|left|200px]]


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==Crystal Structure of Pyrazinamidase of Pyrococcus horikoshii in Complex with Zinc==
The line below this paragraph, containing "STRUCTURE_1im5", creates the "Structure Box" on the page.
<StructureSection load='1im5' size='340' side='right'caption='[[1im5]], [[Resolution|resolution]] 1.65&Aring;' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[1im5]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Pyrococcus_horikoshii Pyrococcus horikoshii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IM5 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1IM5 FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</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>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
{{STRUCTURE_1im5|  PDB=1im5  |  SCENE= }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1im5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1im5 OCA], [https://pdbe.org/1im5 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1im5 RCSB], [https://www.ebi.ac.uk/pdbsum/1im5 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1im5 ProSAT]</span></td></tr>
 
</table>
'''Crystal Structure of Pyrazinamidase of Pyrococcus horikoshii in Complex with Zinc'''
== Function ==
 
[https://www.uniprot.org/uniprot/O58727_PYRHO O58727_PYRHO]
 
== Evolutionary Conservation ==
==Overview==
[[Image:Consurf_key_small.gif|200px|right]]
Bacterial pyrazinamidase (PZAase)/nicotinamidase converts pyrazinamide (PZA) to ammonia and pyrazinoic acid, which is active against Mycobacterium tuberculosis. Loss of PZAase activity is the major mechanism of pyrazinamide-resistance by M. tuberculosis. We have determined the crystal structure of the gene product of Pyrococcus horikoshii 999 (PH999), a PZAase, and its complex with zinc ion by X-ray crystallography. The overall fold of PH999 is similar to that of N-carbamoylsarcosine amidohydrolase (CSHase) of Arthrobacter sp. and YcaC of Escherichia coli, a protein with unknown physiological function. The active site of PH999 was identified by structural features that are also present in the active sites of CSHase and YcaC: a triad (D10, K94, and C133) and a cis-peptide (between V128 and A129). Surprisingly, a metal ion-binding site was revealed in the active site and subsequently confirmed by crystal structure of PH999 in complex with Zn(2+). The roles of the triad, cis-peptide, and metal ion in the catalysis are proposed. Because of extensive homology between PH999 and PZAase of M. tuberculosis (37% sequence identity), the structure of PH999 provides a structural basis for understanding PZA-resistance by M. tuberculosis harboring PZAase mutations.
Check<jmol>
 
  <jmolCheckbox>
==About this Structure==
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/im/1im5_consurf.spt"</scriptWhenChecked>
1IM5 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Pyrococcus_horikoshii Pyrococcus horikoshii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IM5 OCA].  
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
 
    <text>to colour the structure by Evolutionary Conservation</text>
==Reference==
  </jmolCheckbox>
Crystal structure and mechanism of catalysis of a pyrazinamidase from Pyrococcus horikoshii., Du X, Wang W, Kim R, Yakota H, Nguyen H, Kim SH, Biochemistry. 2001 Nov 27;40(47):14166-72. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11714269 11714269]
</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=1im5 ConSurf].
[[Category: Nicotinamidase]]
<div style="clear:both"></div>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Pyrococcus horikoshii]]
[[Category: Pyrococcus horikoshii]]
[[Category: Single protein]]
[[Category: Du X]]
[[Category: Du, X.]]
[[Category: Kim S-H]]
[[Category: Kim, S H.]]
[[Category: Amidase]]
[[Category: Covalent catalysis]]
[[Category: Cysteine hydrolase]]
[[Category: Drug resistance]]
[[Category: Hydrolase]]
[[Category: Metal ion catalysis]]
[[Category: Nicotinamidase]]
[[Category: Pyrazinamidase]]
[[Category: Pyrazinamide]]
[[Category: Pza resistance]]
[[Category: Tuberculosis]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May  2 20:08:58 2008''

Latest revision as of 10:36, 7 February 2024

Crystal Structure of Pyrazinamidase of Pyrococcus horikoshii in Complex with ZincCrystal Structure of Pyrazinamidase of Pyrococcus horikoshii in Complex with Zinc

Structural highlights

1im5 is a 1 chain structure with sequence from Pyrococcus horikoshii. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.65Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

O58727_PYRHO

Evolutionary Conservation

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

1im5, resolution 1.65Å

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OCA
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