This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.


1ds0

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
Current revision (06:58, 7 February 2024) (edit) (undo)
 
(14 intermediate revisions not shown.)
Line 1: Line 1:
-
[[Image:1ds0.jpg|left|200px]]<br /><applet load="1ds0" size="350" color="white" frame="true" align="right" spinBox="true"
 
-
caption="1ds0, resolution 1.63&Aring;" />
 
-
'''CRYSTAL STRUCTURE OF CLAVAMINATE SYNTHASE'''<br />
 
-
==Overview==
+
==CRYSTAL STRUCTURE OF CLAVAMINATE SYNTHASE==
-
Clavaminate synthase (CAS), a remarkable Fe(II)/2-oxoglutarate oxygenase, catalyzes three separate oxidative reactions in the biosynthesis of clavulanic acid, a clinically used inhibitor of serine beta-lactamases. The first CAS-catalyzed step (hydroxylation) is separated from the latter two (oxidative cyclization/desaturation) by the action of an amidinohydrolase. Here, we describe crystal structures of CAS in complex with Fe(II), 2-oxoglutarate (2OG) and substrates (N-alpha-acetyl-L-arginine and proclavaminic acid). They reveal how CAS catalyzes formation of the clavam nucleus, via a process unprecedented in synthetic organic chemistry, and suggest how it discriminates between substrates and controls reaction of its highly reactive ferryl intermediate. The presence of an unpredicted jelly roll beta-barrel core in CAS implies divergent evolution within the family of 2OG and related oxygenases. Comparison with other non-heme oxidases/oxygenases reveals flexibility in the position which dioxygen ligates to the iron, in contrast to the analogous heme-using enzymes.
+
<StructureSection load='1ds0' size='340' side='right'caption='[[1ds0]], [[Resolution|resolution]] 1.63&Aring;' scene=''>
-
 
+
== Structural highlights ==
-
==About this Structure==
+
<table><tr><td colspan='2'>[[1ds0]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptomyces_clavuligerus Streptomyces clavuligerus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DS0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1DS0 FirstGlance]. <br>
-
1DS0 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Streptomyces_clavuligerus Streptomyces clavuligerus] with <scene name='pdbligand=ACT:'>ACT</scene> and <scene name='pdbligand=SO4:'>SO4</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DS0 OCA].
+
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.63&#8491;</td></tr>
-
 
+
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
-
==Reference==
+
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1ds0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ds0 OCA], [https://pdbe.org/1ds0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ds0 RCSB], [https://www.ebi.ac.uk/pdbsum/1ds0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ds0 ProSAT]</span></td></tr>
-
Structural origins of the selectivity of the trifunctional oxygenase clavaminic acid synthase., Zhang Z, Ren J, Stammers DK, Baldwin JE, Harlos K, Schofield CJ, Nat Struct Biol. 2000 Feb;7(2):127-33. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=10655615 10655615]
+
</table>
-
[[Category: Single protein]]
+
== Function ==
 +
[https://www.uniprot.org/uniprot/CAS1_STRCL CAS1_STRCL]
 +
== 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/ds/1ds0_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=1ds0 ConSurf].
 +
<div style="clear:both"></div>
 +
__TOC__
 +
</StructureSection>
 +
[[Category: Large Structures]]
[[Category: Streptomyces clavuligerus]]
[[Category: Streptomyces clavuligerus]]
-
[[Category: Baldwin, J E.]]
+
[[Category: Baldwin JE]]
-
[[Category: Harlos, K.]]
+
[[Category: Harlos K]]
-
[[Category: Ren, J.]]
+
[[Category: Ren J]]
-
[[Category: Schofield, C J.]]
+
[[Category: Schofield CJ]]
-
[[Category: Stammers, D K.]]
+
[[Category: Stammers DK]]
-
[[Category: Zhang, Z H.]]
+
[[Category: Zhang ZH]]
-
[[Category: ACT]]
+
-
[[Category: SO4]]
+
-
[[Category: clavaminate synthase 1]]
+
-
[[Category: jelly roll]]
+
-
[[Category: oxygenase]]
+
-
[[Category: trifunctional enzyme]]
+
-
 
+
-
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 12:19:47 2008''
+

Current revision

CRYSTAL STRUCTURE OF CLAVAMINATE SYNTHASE

PDB ID 1ds0

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/1ds0"
Personal tools