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==Crystal Structure of ornithine 4,5 aminomutase in complex with 2,4-diaminobutyrate (Anaerobic)==
==Crystal Structure of ornithine 4,5 aminomutase in complex with 2,4-diaminobutyrate (Anaerobic)==
<StructureSection load='3kox' size='340' side='right' caption='[[3kox]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
<StructureSection load='3kox' size='340' side='right'caption='[[3kox]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3kox]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/[clostridium]_sticklandii [clostridium] sticklandii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3KOX OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3KOX FirstGlance]. <br>
<table><tr><td colspan='2'>[[3kox]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Acetoanaerobium_sticklandii Acetoanaerobium sticklandii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3KOX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3KOX FirstGlance]. <br>
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=5AD:5-DEOXYADENOSINE'>5AD</scene>, <scene name='pdbligand=B12:COBALAMIN'>B12</scene>, <scene name='pdbligand=Z98:(2S)-2-AMINO-4-{[(1Z)-{3-HYDROXY-2-METHYL-5-[(PHOSPHONOOXY)METHYL]PYRIDIN-4-YL}METHYLIDENE]AMINO}BUTANOIC+ACID'>Z98</scene><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]] 2.4&#8491;</td></tr>
<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3kow|3kow]], [[3koy|3koy]], [[3koz|3koz]], [[3kp0|3kp0]], [[3kp1|3kp1]]</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=5AD:5-DEOXYADENOSINE'>5AD</scene>, <scene name='pdbligand=B12:COBALAMIN'>B12</scene>, <scene name='pdbligand=Z98:(2S)-2-AMINO-4-{[(1Z)-{3-HYDROXY-2-METHYL-5-[(PHOSPHONOOXY)METHYL]PYRIDIN-4-YL}METHYLIDENE]AMINO}BUTANOIC+ACID'>Z98</scene></td></tr>
<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">oraE ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1511 [Clostridium] sticklandii]), oraS ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1511 [Clostridium] sticklandii])</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=3kox FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3kox OCA], [https://pdbe.org/3kox PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3kox RCSB], [https://www.ebi.ac.uk/pdbsum/3kox PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3kox ProSAT]</span></td></tr>
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3kox FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3kox OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3kox RCSB], [http://www.ebi.ac.uk/pdbsum/3kox PDBsum]</span></td></tr>
</table>
<table>
== Function ==
[https://www.uniprot.org/uniprot/OAME_ACESD OAME_ACESD] Component of a complex that catalyzes the reversible migration of the omega amino group of D-ornithine to C-4 to form (2R,4S)-2,4-diaminopentanoic acid. OraE may be the catalytic subunit. Active only on D-ornithine and 2,4-diaminopentanoic acid but not active on L-ornithine, L-beta-lysine, L-alpha-lysine or D-alpha-lysine.<ref>PMID:11577113</ref> <ref>PMID:4711468</ref> <ref>PMID:4711468</ref>  
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
Check<jmol>
   <jmolCheckbox>
   <jmolCheckbox>
     <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ko/3kox_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ko/3kox_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
     <text>to colour the structure by Evolutionary Conservation</text>
   </jmolCheckbox>
   </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/chain_selection.php?pdb_ID=2ata ConSurf].
</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=3kox ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
D-ornithine 4,5-aminomutase (OAM) from Clostridium sticklandii converts D-ornithine to 2,4-diaminopentanoic acid by way of radical propagation from an adenosylcobalamin (AdoCbl) to a pyridoxal 5'-phosphate (PLP) cofactor. We have solved OAM crystal structures in different catalytic states that together demonstrate unusual stability of the AdoCbl Co-C bond and that radical catalysis is coupled to large-scale domain motion. The 2.0-A substrate-free enzyme crystal structure reveals the Rossmann domain, harboring the intact AdoCbl cofactor, is tilted toward the edge of the PLP binding triose-phosphate isomerase barrel domain. The PLP forms an internal aldimine link to the Rossmann domain through Lys(629), effectively locking the enzyme in this "open" pre-catalytic conformation. The distance between PLP and 5'-deoxyadenosyl group is 23 A, and large-scale domain movement is thus required prior to radical catalysis. The OAM crystals contain two Rossmann domains within the asymmetric unit that are unconstrained by the crystal lattice. Surprisingly, the binding of various ligands to OAM crystals (in an oxygen-free environment) leads to transimination in the absence of significant reorientation of the Rossmann domains. In contrast, when performed under aerobic conditions, this leads to extreme disorder in the latter domains correlated with the loss of the 5'-deoxyadenosyl group. Our data indicate turnover and hence formation of the "closed" conformation is occurring within OAM crystals, but that the equilibrium is poised toward the open conformation. We propose that substrate binding induces large-scale domain motion concomitant with a reconfiguration of the 5'-deoxyadenosyl group, triggering radical catalysis in OAM.
Large-scale domain dynamics and adenosylcobalamin reorientation orchestrate radical catalysis in ornithine 4,5-aminomutase.,Wolthers KR, Levy C, Scrutton NS, Leys D J Biol Chem. 2010 Apr 30;285(18):13942-50. Epub 2010 Jan 27. PMID:20106986<ref>PMID:20106986</ref>


From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
==See Also==
</div>
*[[Aminomutase 3D structures|Aminomutase 3D structures]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Levy, C W.]]
[[Category: Acetoanaerobium sticklandii]]
[[Category: Leys, D.]]
[[Category: Large Structures]]
[[Category: Scrutton, N S.]]
[[Category: Levy CW]]
[[Category: Wolthers, K R.]]
[[Category: Leys D]]
[[Category: Anaerobic]]
[[Category: Scrutton NS]]
[[Category: D-ornithine 4]]
[[Category: Wolthers KR]]
[[Category: Metal binding protein]]

Latest revision as of 13:17, 21 February 2024

Crystal Structure of ornithine 4,5 aminomutase in complex with 2,4-diaminobutyrate (Anaerobic)Crystal Structure of ornithine 4,5 aminomutase in complex with 2,4-diaminobutyrate (Anaerobic)

Structural highlights

3kox is a 8 chain structure with sequence from Acetoanaerobium sticklandii. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.4Å
Ligands:, ,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

OAME_ACESD Component of a complex that catalyzes the reversible migration of the omega amino group of D-ornithine to C-4 to form (2R,4S)-2,4-diaminopentanoic acid. OraE may be the catalytic subunit. Active only on D-ornithine and 2,4-diaminopentanoic acid but not active on L-ornithine, L-beta-lysine, L-alpha-lysine or D-alpha-lysine.[1] [2] [3]

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. ↑ Chen HP, Wu SH, Lin YL, Chen CM, Tsay SS. Cloning, sequencing, heterologous expression, purification, and characterization of adenosylcobalamin-dependent D-ornithine aminomutase from Clostridium sticklandii. J Biol Chem. 2001 Nov 30;276(48):44744-50. Epub 2001 Sep 27. PMID:11577113 doi:http://dx.doi.org/10.1074/jbc.M108365200
  2. ↑ Somack R, Costilow RN. Purification and properties of a pyridoxal phosphate and coenzyme B 12 dependent D- -ornithine 5,4-aminomutase. Biochemistry. 1973 Jul 3;12(14):2597-604. PMID:4711468
  3. ↑ Somack R, Costilow RN. Purification and properties of a pyridoxal phosphate and coenzyme B 12 dependent D- -ornithine 5,4-aminomutase. Biochemistry. 1973 Jul 3;12(14):2597-604. PMID:4711468

3kox, resolution 2.40Å

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