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.


1n0j

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
(New page: 200px<br /> <applet load="1n0j" size="450" color="white" frame="true" align="right" spinBox="true" caption="1n0j, resolution 2.2&Aring;" /> '''The Structure of Hum...)
Current revision (07:50, 14 February 2024) (edit) (undo)
 
(18 intermediate revisions not shown.)
Line 1: Line 1:
-
[[Image:1n0j.gif|left|200px]]<br />
 
-
<applet load="1n0j" size="450" color="white" frame="true" align="right" spinBox="true"
 
-
caption="1n0j, resolution 2.2&Aring;" />
 
-
'''The Structure of Human Mitochondrial MN3+ Superoxide Dismutase Reveals a Novel Tetrameric Interface of Two 4-Helix Bundles'''<br />
 
-
==Overview==
+
==The Structure of Human Mitochondrial MN3+ Superoxide Dismutase Reveals a Novel Tetrameric Interface of Two 4-Helix Bundles==
-
The 2.2 A resolution crystal structure of recombinant human manganese, superoxide dismutase, a homotetrameric enzyme that protects mitochondria, against oxygen-mediated free radical damage, has been determined. Within, each subunit, both the N-terminal helical hairpin and C-terminal, alpha/beta domains contribute ligands to the catalytic manganese site. Two, identical 4-helix bundles, symmetrically assembled from the N-terminal, helical hairpins, form novel tetrameric interfaces that stabilize the, active sites. Structurally altered polymorphic variants with reduced, activity, such as tetrameric interface mutant Ile-58 to Thr, may produce, not only an early selective advantage, through enhanced cytotoxicity of, tumor necrosis factor for virus-infected cells, but also detrimental, effects from increased mitochondrial oxidative damage, contributing to, degenerative conditions, including diabetes, aging, and Parkinson's and, Alzheimer's diseases.
+
<StructureSection load='1n0j' size='340' side='right'caption='[[1n0j]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
 +
== Structural highlights ==
 +
<table><tr><td colspan='2'>[[1n0j]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1abm 1abm]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1N0J OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1N0J 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]] 2.2&#8491;</td></tr>
 +
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</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=1n0j FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1n0j OCA], [https://pdbe.org/1n0j PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1n0j RCSB], [https://www.ebi.ac.uk/pdbsum/1n0j PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1n0j ProSAT]</span></td></tr>
 +
</table>
 +
== Disease ==
 +
[https://www.uniprot.org/uniprot/SODM_HUMAN SODM_HUMAN] Genetic variation in SOD2 is associated with susceptibility to microvascular complications of diabetes type 6 (MVCD6) [MIM:[https://omim.org/entry/612634 612634]. These are pathological conditions that develop in numerous tissues and organs as a consequence of diabetes mellitus. They include diabetic retinopathy, diabetic nephropathy leading to end-stage renal disease, and diabetic neuropathy. Diabetic retinopathy remains the major cause of new-onset blindness among diabetic adults. It is characterized by vascular permeability and increased tissue ischemia and angiogenesis.
 +
== Function ==
 +
[https://www.uniprot.org/uniprot/SODM_HUMAN SODM_HUMAN] Destroys superoxide anion radicals which are normally produced within the cells and which are toxic to biological systems.<ref>PMID:10334867</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/n0/1n0j_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=1n0j ConSurf].
 +
<div style="clear:both"></div>
-
==About this Structure==
+
==See Also==
-
1N0J is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with MN as [http://en.wikipedia.org/wiki/ligand ligand]. This structure superseeds the now removed PDB entry 1ABM. Active as [http://en.wikipedia.org/wiki/Superoxide_dismutase Superoxide dismutase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.15.1.1 1.15.1.1] Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1N0J OCA].
+
*[[Superoxide dismutase 3D structures|Superoxide dismutase 3D structures]]
-
 
+
== References ==
-
==Reference==
+
<references/>
-
The structure of human mitochondrial manganese superoxide dismutase reveals a novel tetrameric interface of two 4-helix bundles., Borgstahl GE, Parge HE, Hickey MJ, Beyer WF Jr, Hallewell RA, Tainer JA, Cell. 1992 Oct 2;71(1):107-18. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=1394426 1394426]
+
__TOC__
 +
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
-
[[Category: Single protein]]
+
[[Category: Large Structures]]
-
[[Category: Superoxide dismutase]]
+
[[Category: Borgstahl GEO]]
-
[[Category: Borgstahl, G.E.O.]]
+
[[Category: Parge HE]]
-
[[Category: Parge, H.E.]]
+
[[Category: Tainer JA]]
-
[[Category: Tainer, J.A.]]
+
-
[[Category: MN]]
+
-
[[Category: four-helix bundle]]
+
-
[[Category: manganese]]
+
-
[[Category: metalloenzyme]]
+
-
 
+
-
''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Mon Nov 12 18:16:24 2007''
+

Current revision

The Structure of Human Mitochondrial MN3+ Superoxide Dismutase Reveals a Novel Tetrameric Interface of Two 4-Helix Bundles

PDB ID 1n0j

Drag the structure with the mouse to rotate

Proteopedia Page Contributors and Editors (what is this?)

OCA

Personal tools