2ivo

From Proteopedia

(Difference between revisions)

Revision as of 20:20, 25 December 2014

STRUCTURE OF UP1 PROTEIN

Structural highlights

2ivo is a 4 chain structure with sequence from Pyrococcus abyssi. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Related:	2ivn, 2ivp
Resources:	FirstGlance, OCA, RCSB, PDBsum

Function

[GCP_PYRAB] Required for the formation of a threonylcarbamoyl group on adenosine at position 37 (t(6)A37) in tRNAs that read codons beginning with adenine. Is a component of the KEOPS complex that is probably involved in the transfer of the threonylcarbamoyl moiety of threonylcarbamoyl-AMP (TC-AMP) to the N6 group of A37. Kae1 likely plays a direct catalytic role in this reaction, but requires other protein(s) of the complex to fulfill this activity. In vitro, binds tRNA, ssRNA, both single- and double-stranded DNA, and exhibits a low ATPase activity.^[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.

Publication Abstract from PubMed

The Kae1 (Kinase-associated endopeptidase 1) protein is a member of the recently identified transcription complex EKC and telomeres maintenance complex KEOPS in yeast. Kae1 homologues are encoded by all sequenced genomes in the three domains of life. Although annotated as putative endopeptidases, the actual functions of these universal proteins are unknown. Here we show that the purified Kae1 protein (Pa-Kae1) from Pyrococcus abyssi is an iron-protein with a novel type of ATP-binding site. Surprisingly, this protein did not exhibit endopeptidase activity in vitro but binds cooperatively to single and double-stranded DNA and induces unusual DNA conformational change. Furthermore, Pa-Kae1 exhibits a class I apurinic (AP)-endonuclease activity (AP-lyase). Both DNA binding and AP-endonuclease activity are inhibited by ATP. Kae1 is thus a novel and atypical universal DNA interacting protein whose importance could rival those of RecA (RadA/Rad51) in the maintenance of genome integrity in all living cells.

An archaeal orthologue of the universal protein Kae1 is an iron metalloprotein which exhibits atypical DNA-binding properties and apurinic-endonuclease activity in vitro.,Hecker A, Leulliot N, Gadelle D, Graille M, Justome A, Dorlet P, Brochier C, Quevillon-Cheruel S, Le Cam E, van Tilbeurgh H, Forterre P Nucleic Acids Res. 2007;35(18):6042-51. Epub 2007 Aug 30. PMID:17766251^[4]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Hecker A, Graille M, Madec E, Gadelle D, Le Cam E, van Tilbergh H, Forterre P. The universal Kae1 protein and the associated Bud32 kinase (PRPK), a mysterious protein couple probably essential for genome maintenance in Archaea and Eukarya. Biochem Soc Trans. 2009 Feb;37(Pt 1):29-35. doi: 10.1042/BST0370029. PMID:19143597 doi:http://dx.doi.org/10.1042/BST0370029
↑ Perrochia L, Crozat E, Hecker A, Zhang W, Bareille J, Collinet B, van Tilbeurgh H, Forterre P, Basta T. In vitro biosynthesis of a universal t6A tRNA modification in Archaea and Eukarya. Nucleic Acids Res. 2013 Feb 1;41(3):1953-64. doi: 10.1093/nar/gks1287. Epub 2012 , Dec 20. PMID:23258706 doi:http://dx.doi.org/10.1093/nar/gks1287
↑ Hecker A, Leulliot N, Gadelle D, Graille M, Justome A, Dorlet P, Brochier C, Quevillon-Cheruel S, Le Cam E, van Tilbeurgh H, Forterre P. An archaeal orthologue of the universal protein Kae1 is an iron metalloprotein which exhibits atypical DNA-binding properties and apurinic-endonuclease activity in vitro. Nucleic Acids Res. 2007;35(18):6042-51. Epub 2007 Aug 30. PMID:17766251 doi:10.1093/nar/gkm554
↑ Hecker A, Leulliot N, Gadelle D, Graille M, Justome A, Dorlet P, Brochier C, Quevillon-Cheruel S, Le Cam E, van Tilbeurgh H, Forterre P. An archaeal orthologue of the universal protein Kae1 is an iron metalloprotein which exhibits atypical DNA-binding properties and apurinic-endonuclease activity in vitro. Nucleic Acids Res. 2007;35(18):6042-51. Epub 2007 Aug 30. PMID:17766251 doi:10.1093/nar/gkm554

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2ivo"

@@ Line 3: / Line 3: @@
 == Structural highlights ==
 <table><tr><td colspan='2'>[[2ivo]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Pyrococcus_abyssi Pyrococcus abyssi]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2IVO OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2IVO FirstGlance]. <br>
-</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=WO4:TUNGSTATE(VI)ION'>WO4</scene><br>
+</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=WO4:TUNGSTATE(VI)ION'>WO4</scene></td></tr>
-<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2ivn|2ivn]], [[2ivp|2ivp]]</td></tr>
+<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2ivn|2ivn]], [[2ivp|2ivp]]</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=2ivo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ivo OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2ivo RCSB], [http://www.ebi.ac.uk/pdbsum/2ivo PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ivo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ivo OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2ivo RCSB], [http://www.ebi.ac.uk/pdbsum/2ivo PDBsum]</span></td></tr>
-<table>
+</table>
+== Function ==
+[[http://www.uniprot.org/uniprot/GCP_PYRAB GCP_PYRAB]] Required for the formation of a threonylcarbamoyl group on adenosine at position 37 (t(6)A37) in tRNAs that read codons beginning with adenine. Is a component of the KEOPS complex that is probably involved in the transfer of the threonylcarbamoyl moiety of threonylcarbamoyl-AMP (TC-AMP) to the N6 group of A37. Kae1 likely plays a direct catalytic role in this reaction, but requires other protein(s) of the complex to fulfill this activity. In vitro, binds tRNA, ssRNA, both single- and double-stranded DNA, and exhibits a low ATPase activity.<ref>PMID:19143597</ref> <ref>PMID:23258706</ref> <ref>PMID:17766251</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 30: / Line 32: @@
 </StructureSection>
 [[Category: Pyrococcus abyssi]]
-[[Category: Dorlet, P.]]
+[[Category: Dorlet, P]]
-[[Category: Forterre, P.]]
+[[Category: Forterre, P]]
-[[Category: Graille, M.]]
+[[Category: Graille, M]]
-[[Category: Hecker, A.]]
+[[Category: Hecker, A]]
-[[Category: Leulliot, N.]]
+[[Category: Leulliot, N]]
-[[Category: Quevillon-Cheruel, S.]]
+[[Category: Quevillon-Cheruel, S]]
-[[Category: Tilbeurgh, H Van.]]
+[[Category: Tilbeurgh, H Van]]
-[[Category: Ulryck, N.]]
+[[Category: Ulryck, N]]
 [[Category: Fe/zn dependent nucleotide phosphatase]]
 [[Category: Hydrolase]]

2ivo

From Proteopedia

Revision as of 20:20, 25 December 2014

STRUCTURE OF UP1 PROTEIN

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox