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.


1ej9

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
Current revision (07:03, 7 February 2024) (edit) (undo)
 
(9 intermediate revisions not shown.)
Line 1: Line 1:
-
[[Image:1ej9.png|left|200px]]
 
-
{{STRUCTURE_1ej9| PDB=1ej9 | SCENE= }}
+
==CRYSTAL STRUCTURE OF HUMAN TOPOISOMERASE I DNA COMPLEX==
-
 
+
<StructureSection load='1ej9' size='340' side='right'caption='[[1ej9]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
-
===CRYSTAL STRUCTURE OF HUMAN TOPOISOMERASE I DNA COMPLEX===
+
== Structural highlights ==
-
 
+
<table><tr><td colspan='2'>[[1ej9]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EJ9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1EJ9 FirstGlance]. <br>
-
{{ABSTRACT_PUBMED_10841763}}
+
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.6&#8491;</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=1ej9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ej9 OCA], [https://pdbe.org/1ej9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ej9 RCSB], [https://www.ebi.ac.uk/pdbsum/1ej9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ej9 ProSAT]</span></td></tr>
-
==About this Structure==
+
</table>
-
[[1ej9]] is a 3 chain structure of [[Topoisomerase]] with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EJ9 OCA].
+
== Disease ==
 +
[https://www.uniprot.org/uniprot/TOP1_HUMAN TOP1_HUMAN] Note=A chromosomal aberration involving TOP1 is found in a form of therapy-related myelodysplastic syndrome. Translocation t(11;20)(p15;q11) with NUP98.
 +
== Function ==
 +
[https://www.uniprot.org/uniprot/TOP1_HUMAN TOP1_HUMAN] Releases the supercoiling and torsional tension of DNA introduced during the DNA replication and transcription by transiently cleaving and rejoining one strand of the DNA duplex. Introduces a single-strand break via transesterification at a target site in duplex DNA. The scissile phosphodiester is attacked by the catalytic tyrosine of the enzyme, resulting in the formation of a DNA-(3'-phosphotyrosyl)-enzyme intermediate and the expulsion of a 5'-OH DNA strand. The free DNA strand then undergoes passage around the unbroken strand thus removing DNA supercoils. Finally, in the religation step, the DNA 5'-OH attacks the covalent intermediate to expel the active-site tyrosine and restore the DNA phosphodiester backbone (By similarity). Regulates the alternative splicing of tissue factor (F3) pre-mRNA in endothelial cells.<ref>PMID:2833744</ref> <ref>PMID:19168442</ref> <ref>PMID:14594810</ref> <ref>PMID:16033260</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/ej/1ej9_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=1ej9 ConSurf].
 +
<div style="clear:both"></div>
==See Also==
==See Also==
-
*[[Topoisomerase|Topoisomerase]]
+
*[[Topoisomerase 3D structures|Topoisomerase 3D structures]]
-
 
+
== References ==
-
==Reference==
+
<references/>
-
<ref group="xtra">PMID:010841763</ref><references group="xtra"/>
+
__TOC__
-
[[Category: DNA topoisomerase]]
+
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
-
[[Category: Champoux, J J.]]
+
[[Category: Large Structures]]
-
[[Category: Hol, W G.]]
+
[[Category: Champoux JJ]]
-
[[Category: Redinbo, M R.]]
+
[[Category: Hol WG]]
-
[[Category: Human]]
+
[[Category: Redinbo MR]]
-
[[Category: Isomerase-dna complex]]
+
-
[[Category: Protein-dna complex]]
+
-
[[Category: Type i topoisomerase]]
+

Current revision

CRYSTAL STRUCTURE OF HUMAN TOPOISOMERASE I DNA COMPLEX

PDB ID 1ej9

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/1ej9"
Personal tools