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.


1b78

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
Current revision (23:20, 27 December 2023) (edit) (undo)
 
(11 intermediate revisions not shown.)
Line 1: Line 1:
-
{{Seed}}
 
-
[[Image:1b78.png|left|200px]]
 
-
<!--
+
==STRUCTURE-BASED IDENTIFICATION OF THE BIOCHEMICAL FUNCTION OF A HYPOTHETICAL PROTEIN FROM METHANOCOCCUS JANNASCHII:MJ0226==
-
The line below this paragraph, containing "STRUCTURE_1b78", creates the "Structure Box" on the page.
+
<StructureSection load='1b78' size='340' side='right'caption='[[1b78]], [[Resolution|resolution]] 2.20&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'>[[1b78]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Methanocaldococcus_jannaschii Methanocaldococcus jannaschii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1B78 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1B78 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]] 2.2&#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=1b78 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1b78 OCA], [https://pdbe.org/1b78 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1b78 RCSB], [https://www.ebi.ac.uk/pdbsum/1b78 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1b78 ProSAT]</span></td></tr>
-
{{STRUCTURE_1b78| PDB=1b78 | SCENE= }}
+
</table>
 +
== Function ==
 +
[https://www.uniprot.org/uniprot/IXTPA_METJA IXTPA_METJA] Pyrophosphatase that catalyzes the hydrolysis of nucleoside triphosphates to their monophosphate derivatives, with a high preference for the non-canonical purine nucleotides xanthosine triphosphate (XTP), deoxyinosine triphosphate (dITP) and ITP (PubMed:10404228, PubMed:11452035). Probably functions as a house-cleaning enzyme that removes non-canonical purine nucleotides from the nucleotide pool, thus preventing their incorporation into DNA/RNA and avoiding chromosomal lesions (PubMed:11452035). Shows very low activity on GTP or dGTP, both of which are hydrolyzed more than 100-fold less efficiently than XTP, and has nearly no activity toward the canonical nucleotides ATP, CTP, and TTP, and toward 6-N-hydroxylaminopurine deoxynucleoside triphosphate (dHAPTP) (PubMed:10404228, PubMed:11452035). Displays neither endonuclease nor 3'-exonuclease activities (PubMed:11452035).<ref>PMID:10404228</ref> <ref>PMID:11452035</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/b7/1b78_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=1b78 ConSurf].
 +
<div style="clear:both"></div>
 +
<div style="background-color:#fffaf0;">
 +
== Publication Abstract from PubMed ==
 +
Almost half of the entire set of predicted genomic products from Methanococcus jannaschii are classified as functionally unknown hypothetical proteins. We present a structure-based identification of the biochemical function of a protein with an as yet unknown function from a M. jannaschii gene, Mj0226. The crystal structure of Mj0226 protein determined at 2.2 A resolution reveals that the protein is a homodimer and each monomer folds into an elongated alpha/beta structure of a new fold family. Comparisons of Mj0226 protein with protein structures in the database, however, indicate that one part of the protein is homologous to some of the nucleotide-binding proteins. Biochemical analysis shows that Mj0226 protein is a novel nucleotide triphosphatase that can efficiently hydrolyze nonstandard nucleotides such as XTP to XMP or ITP to IMP, but not the standard nucleotides, in the presence of Mg2+ or Mn2+ ions.
-
===STRUCTURE-BASED IDENTIFICATION OF THE BIOCHEMICAL FUNCTION OF A HYPOTHETICAL PROTEIN FROM METHANOCOCCUS JANNASCHII:MJ0226===
+
Structure-based identification of a novel NTPase from Methanococcus jannaschii.,Hwang KY, Chung JH, Kim SH, Han YS, Cho Y Nat Struct Biol. 1999 Jul;6(7):691-6. PMID:10404228<ref>PMID:10404228</ref>
 +
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 +
</div>
 +
<div class="pdbe-citations 1b78" style="background-color:#fffaf0;"></div>
-
<!--
+
==See Also==
-
The line below this paragraph, {{ABSTRACT_PUBMED_10404228}}, adds the Publication Abstract to the page
+
*[[Inorganic pyrophosphatase 3D structures|Inorganic pyrophosphatase 3D structures]]
-
(as it appears on PubMed at http://www.pubmed.gov), where 10404228 is the PubMed ID number.
+
== References ==
-
-->
+
<references/>
-
{{ABSTRACT_PUBMED_10404228}}
+
__TOC__
-
 
+
</StructureSection>
-
==About this Structure==
+
[[Category: Large Structures]]
-
1B78 is a 2 chains structure of sequences from [http://en.wikipedia.org/wiki/Methanocaldococcus_jannaschii Methanocaldococcus jannaschii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1B78 OCA].
+
-
 
+
-
==Reference==
+
-
<ref group="xtra">PMID:10404228</ref><references group="xtra"/>
+
[[Category: Methanocaldococcus jannaschii]]
[[Category: Methanocaldococcus jannaschii]]
-
[[Category: Cho, Y.]]
+
[[Category: Cho Y]]
-
[[Category: Chung, J H.]]
+
[[Category: Chung JH]]
-
[[Category: Han, Y S.]]
+
[[Category: Han YS]]
-
[[Category: Hwang, K Y.]]
+
[[Category: Hwang KY]]
-
[[Category: Kim, S H.]]
+
[[Category: Kim SH]]
-
[[Category: Hyperthermal protein]]
+
-
[[Category: Pyrophosphatase]]
+
-
[[Category: Structural genomic]]
+
-
 
+
-
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Feb 16 18:20:40 2009''
+

Current revision

STRUCTURE-BASED IDENTIFICATION OF THE BIOCHEMICAL FUNCTION OF A HYPOTHETICAL PROTEIN FROM METHANOCOCCUS JANNASCHII:MJ0226

PDB ID 1b78

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/1b78"
Personal tools