View source for 3ml0


==Thermostable Penicillin G acylase from Alcaligenes faecalis in tetragonal form==
<StructureSection load='3ml0' size='340' side='right'caption='[[3ml0]], [[Resolution|resolution]] 3.50&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3ml0]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Alcaligenes_faecalis Alcaligenes faecalis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ML0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3ML0 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]] 3.5&#8491;</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></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=3ml0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ml0 OCA], [https://pdbe.org/3ml0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3ml0 RCSB], [https://www.ebi.ac.uk/pdbsum/3ml0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3ml0 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/O34142_ALCFA O34142_ALCFA] 
== 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/ml/3ml0_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=3ml0 ConSurf].
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== Publication Abstract from PubMed ==
The enzyme penicillin G acylase (EC 3.5.1.11) catalyzes amide-bond cleavage in benzylpenicillin (penicillin G) to yield 6-aminopenicillanic acid, an intermediate chemical used in the production of semisynthetic penicillins. A thermostable penicillin G acylase from Alcaligenes faecalis (AfPGA) has been crystallized using the hanging-drop vapour-diffusion method in two different space groups: C222(1), with unit-cell parameters a = 72.9, b = 86.0, c = 260.2 , and P4(1)2(1)2, with unit-cell parameters a = b = 85.6, c = 298.8 . Data were collected at 293 and the structure was determined using the molecular-replacement method. Like other penicillin acylases, AfPGA belongs to the N-terminal nucleophilic hydrolase superfamily, has undergone post-translational processing and has a serine as the N-terminal residue of the beta-chain. A disulfide bridge has been identified in the structure that was not found in the other two known penicillin G cylase structures. The presence of the disulfide bridge is perceived to be one factor that confers higher stability to this enzyme.

Crystallization and X-ray structure analysis of a thermostable penicillin G acylase from Alcaligenes faecalis.,Varshney NK, Kumar RS, Ignatova Z, Prabhune A, Pundle A, Dodson E, Suresh CG Acta Crystallogr Sect F Struct Biol Cryst Commun. 2012 Mar 1;68(Pt 3):273-7. Epub, 2012 Feb 15. PMID:22442220<ref>PMID:22442220</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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==See Also==
*[[Penicillin acylase|Penicillin acylase]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Alcaligenes faecalis]]
[[Category: Large Structures]]
[[Category: Dodson E]]
[[Category: Ignatova Z]]
[[Category: Kumar RS]]
[[Category: Suresh CG]]
[[Category: Varshney NK]]