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[[Image:1zzc.gif|left|200px]]<br /><applet load="1zzc" size="350" color="white" frame="true" align="right" spinBox="true"
caption="1zzc, resolution 1.80&Aring;" />
'''Crystal Structure of CoII HppE in Complex with Tris Buffer'''<br />


==Overview==
==Crystal Structure of CoII HppE in Complex with Tris Buffer==
The biosynthetic pathway of the clinically important antibiotic fosfomycin uses enzymes that catalyse reactions without precedent in biology. Among these is hydroxypropylphosphonic acid epoxidase, which represents a new subfamily of non-haem mononuclear iron enzymes. Here we present six X-ray structures of this enzyme: the apoenzyme at 2.0 A resolution; a native Fe(II)-bound form at 2.4 A resolution; a tris(hydroxymethyl)aminomethane-Co(II)-enzyme complex structure at 1.8 A resolution; a substrate-Co(II)-enzyme complex structure at 2.5 A resolution; and two substrate-Fe(II)-enzyme complexes at 2.1 and 2.3 A resolution. These structural data lead us to suggest how this enzyme is able to recognize and respond to its substrate with a conformational change that protects the radical-based intermediates formed during catalysis. Comparisons with other family members suggest why substrate binding is able to prime iron for dioxygen binding in the absence of alpha-ketoglutarate (a co-substrate required by many mononuclear iron enzymes), and how the unique epoxidation reaction of hydroxypropylphosphonic acid epoxidase may occur.
<StructureSection load='1zzc' size='340' side='right'caption='[[1zzc]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1zzc]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptomyces_wedmorensis Streptomyces wedmorensis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ZZC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1ZZC 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]] 1.8&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CO:COBALT+(II)+ION'>CO</scene>, <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</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=1zzc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1zzc OCA], [https://pdbe.org/1zzc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1zzc RCSB], [https://www.ebi.ac.uk/pdbsum/1zzc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1zzc ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/HPPE_STRWE HPPE_STRWE] Non-heme-dependent dioxygenase that catalyzes the oxidative epoxidation of (S)-2-hydroxypropylphosphonate into (1R,2S)-epoxypropylphosphonate, the final step in the biosynthesis of fosfomycin antibiotic.<ref>PMID:16015285</ref> <ref>PMID:16186494</ref>
== 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/zz/1zzc_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=1zzc ConSurf].
<div style="clear:both"></div>


==About this Structure==
==See Also==
1ZZC is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Streptomyces_wedmorensis Streptomyces wedmorensis] with <scene name='pdbligand=CO:'>CO</scene> and <scene name='pdbligand=TRS:'>TRS</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ZZC OCA].
*[[Epoxidase 3D structures|Epoxidase 3D structures]]
 
== References ==
==Reference==
<references/>
Structural insight into antibiotic fosfomycin biosynthesis by a mononuclear iron enzyme., Higgins LJ, Yan F, Liu P, Liu HW, Drennan CL, Nature. 2005 Oct 6;437(7060):838-44. Epub 2005 Jul 13. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=16015285 16015285]
__TOC__
[[Category: Single protein]]
</StructureSection>
[[Category: Large Structures]]
[[Category: Streptomyces wedmorensis]]
[[Category: Streptomyces wedmorensis]]
[[Category: Drennan, C L.]]
[[Category: Drennan CL]]
[[Category: Higgins, L J.]]
[[Category: Higgins LJ]]
[[Category: Liu, H W.]]
[[Category: Liu HW]]
[[Category: Liu, P.]]
[[Category: Liu P]]
[[Category: Yan, F.]]
[[Category: Yan F]]
[[Category: CO]]
[[Category: TRS]]
[[Category: cupin]]
[[Category: holo-hppe]]
[[Category: mononuclear iron enzyme]]
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 16:20:34 2008''

Latest revision as of 12:07, 14 February 2024

Crystal Structure of CoII HppE in Complex with Tris BufferCrystal Structure of CoII HppE in Complex with Tris Buffer

Structural highlights

1zzc is a 2 chain structure with sequence from Streptomyces wedmorensis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.8Å
Ligands:,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

HPPE_STRWE Non-heme-dependent dioxygenase that catalyzes the oxidative epoxidation of (S)-2-hydroxypropylphosphonate into (1R,2S)-epoxypropylphosphonate, the final step in the biosynthesis of fosfomycin antibiotic.[1] [2]

Evolutionary Conservation

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

See Also

References

  1. ↑ Higgins LJ, Yan F, Liu P, Liu HW, Drennan CL. Structural insight into antibiotic fosfomycin biosynthesis by a mononuclear iron enzyme. Nature. 2005 Oct 6;437(7060):838-44. Epub 2005 Jul 13. PMID:16015285 doi:http://dx.doi.org/10.1038/nature03924
  2. ↑ McLuskey K, Cameron S, Hammerschmidt F, Hunter WN. Structure and reactivity of hydroxypropylphosphonic acid epoxidase in fosfomycin biosynthesis by a cation- and flavin-dependent mechanism. Proc Natl Acad Sci U S A. 2005 Oct 4;102(40):14221-6. Epub 2005 Sep 26. PMID:16186494

1zzc, resolution 1.80Å

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