1kej

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
Current revision (08:57, 16 August 2023) (edit) (undo)
 
(11 intermediate revisions not shown.)
Line 1: Line 1:
-
[[Image:1kej.jpg|left|200px]]
 
-
<!--
+
==Crystal Structure of Murine Terminal Deoxynucleotidyl Transferase complexed with ddATP==
-
The line below this paragraph, containing "STRUCTURE_1kej", creates the "Structure Box" on the page.
+
<StructureSection load='1kej' size='340' side='right'caption='[[1kej]], [[Resolution|resolution]] 3.00&Aring;' scene=''>
-
You may change the PDB parameter (which sets the PDB file loaded into the applet)
+
== Structural highlights ==
-
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
+
<table><tr><td colspan='2'>[[1kej]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KEJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1KEJ FirstGlance]. <br>
-
or leave the SCENE parameter empty for the default display.
+
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3&#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=DAD:2,3-DIDEOXYADENOSINE-5-TRIPHOSPHATE'>DAD</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
-
{{STRUCTURE_1kej| PDB=1kej | SCENE= }}
+
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1kej FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kej OCA], [https://pdbe.org/1kej PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1kej RCSB], [https://www.ebi.ac.uk/pdbsum/1kej PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1kej ProSAT]</span></td></tr>
 +
</table>
 +
== Function ==
 +
[https://www.uniprot.org/uniprot/TDT_MOUSE TDT_MOUSE] Template-independent DNA polymerase which catalyzes the random addition of deoxynucleoside 5'-triphosphate to the 3'-end of a DNA initiator. One of the in vivo functions of this enzyme is the addition of nucleotides at the junction (N region) of rearranged Ig heavy chain and T-cell receptor gene segments during the maturation of B- and T-cells.
 +
== 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/ke/1kej_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=1kej ConSurf].
 +
<div style="clear:both"></div>
 +
<div style="background-color:#fffaf0;">
 +
== Publication Abstract from PubMed ==
 +
The crystal structure of the catalytic core of murine terminal deoxynucleotidyltransferase (TdT) at 2.35 A resolution reveals a typical DNA polymerase beta-like fold locked in a closed form. In addition, the structures of two different binary complexes, one with an oligonucleotide primer and the other with an incoming ddATP-Co(2+) complex, show that the substrates and the two divalent ions in the catalytic site are positioned in TdT in a manner similar to that described for the human DNA polymerase beta ternary complex, suggesting a common two metal ions mechanism of nucleotidyl transfer in these two proteins. The inability of TdT to accommodate a template strand can be explained by steric hindrance at the catalytic site caused by a long lariat-like loop, which is absent in DNA polymerase beta. However, displacement of this discriminating loop would be sufficient to unmask a number of evolutionarily conserved residues, which could then interact with a template DNA strand. The present structure can be used to model the recently discovered human polymerase mu, with which it shares 43% sequence identity.
-
'''Crystal Structure of Murine Terminal Deoxynucleotidyl Transferase complexed with ddATP'''
+
Crystal structures of a template-independent DNA polymerase: murine terminal deoxynucleotidyltransferase.,Delarue M, Boule JB, Lescar J, Expert-Bezancon N, Jourdan N, Sukumar N, Rougeon F, Papanicolaou C EMBO J. 2002 Feb 1;21(3):427-39. PMID:11823435<ref>PMID:11823435</ref>
-
 
+
-
 
+
-
==Overview==
+
-
The crystal structure of the catalytic core of murine terminal deoxynucleotidyltransferase (TdT) at 2.35 A resolution reveals a typical DNA polymerase beta-like fold locked in a closed form. In addition, the structures of two different binary complexes, one with an oligonucleotide primer and the other with an incoming ddATP-Co(2+) complex, show that the substrates and the two divalent ions in the catalytic site are positioned in TdT in a manner similar to that described for the human DNA polymerase beta ternary complex, suggesting a common two metal ions mechanism of nucleotidyl transfer in these two proteins. The inability of TdT to accommodate a template strand can be explained by steric hindrance at the catalytic site caused by a long lariat-like loop, which is absent in DNA polymerase beta. However, displacement of this discriminating loop would be sufficient to unmask a number of evolutionarily conserved residues, which could then interact with a template DNA strand. The present structure can be used to model the recently discovered human polymerase mu, with which it shares 43% sequence identity.
+
-
==About this Structure==
+
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-
1KEJ is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KEJ OCA].
+
</div>
 +
<div class="pdbe-citations 1kej" style="background-color:#fffaf0;"></div>
-
==Reference==
+
==See Also==
-
Crystal structures of a template-independent DNA polymerase: murine terminal deoxynucleotidyltransferase., Delarue M, Boule JB, Lescar J, Expert-Bezancon N, Jourdan N, Sukumar N, Rougeon F, Papanicolaou C, EMBO J. 2002 Feb 1;21(3):427-39. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11823435 11823435]
+
*[[DNA polymerase 3D structures|DNA polymerase 3D structures]]
-
[[Category: DNA nucleotidylexotransferase]]
+
== References ==
 +
<references/>
 +
__TOC__
 +
</StructureSection>
 +
[[Category: Large Structures]]
[[Category: Mus musculus]]
[[Category: Mus musculus]]
-
[[Category: Single protein]]
+
[[Category: Boule JB]]
-
[[Category: Boule, J B.]]
+
[[Category: Delarue M]]
-
[[Category: Delarue, M.]]
+
[[Category: Expert-Bezancon N]]
-
[[Category: Expert-Bezancon, N.]]
+
[[Category: Jourdan N]]
-
[[Category: Jourdan, N.]]
+
[[Category: Lescar J]]
-
[[Category: Lescar, J.]]
+
[[Category: Papanicolaou C]]
-
[[Category: Papanicolaou, C.]]
+
[[Category: Rougeon F]]
-
[[Category: Rougeon, F.]]
+
[[Category: Sukumar N]]
-
[[Category: Sukumar, N.]]
+
-
[[Category: Nucleotidyl transferase]]
+
-
[[Category: Pol x family]]
+
-
[[Category: Polymerase]]
+
-
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 22:38:48 2008''
+

Current revision

Crystal Structure of Murine Terminal Deoxynucleotidyl Transferase complexed with ddATP

PDB ID 1kej

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/1kej"
Personal tools