1j5k: Difference between revisions

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[[Image:1j5k.png|left|200px]]


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==COMPLEX OF THE KH3 DOMAIN OF HNRNP K WITH A SINGLE_STRANDED 10MER DNA OLIGONUCLEOTIDE==
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<StructureSection load='1j5k' size='340' side='right'caption='[[1j5k]]' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1j5k]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1J5K OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1J5K FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1j5k FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1j5k OCA], [https://pdbe.org/1j5k PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1j5k RCSB], [https://www.ebi.ac.uk/pdbsum/1j5k PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1j5k ProSAT]</span></td></tr>
{{STRUCTURE_1j5k|  PDB=1j5k  |  SCENE= }}
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== Function ==
[https://www.uniprot.org/uniprot/HNRPK_HUMAN HNRPK_HUMAN] One of the major pre-mRNA-binding proteins. Binds tenaciously to poly(C) sequences. Likely to play a role in the nuclear metabolism of hnRNAs, particularly for pre-mRNAs that contain cytidine-rich sequences. Can also bind poly(C) single-stranded DNA. Plays an important role in p53/TP53 response to DNA damage, acting at the level of both transcription activation and repression. When sumoylated, acts as a transcriptional coactivator of p53/TP53, playing a role in p21/CDKN1A and 14-3-3 sigma/SFN induction (By similarity). As far as transcription repression is concerned, acts by interacting with long intergenic RNA p21 (lincRNA-p21), a non-coding RNA induced by p53/TP53. This interaction is necessary for the induction of apoptosis, but not cell cycle arrest.<ref>PMID:16360036</ref> <ref>PMID:20673990</ref> <ref>PMID:22825850</ref>
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
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    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/j5/1j5k_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=1j5k ConSurf].
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== Publication Abstract from PubMed ==
To elucidate the basis of sequence-specific single-stranded (ss) DNA recognition by K homology (KH) domains, we have solved the solution structure of a complex between the KH3 domain of the transcriptional regulator heterogeneous nuclear ribonucleoprotein K (hnRNP K) and a 10mer ssDNA. We show that hnRNP K KH3 specifically recognizes a tetrad of sequence 5'd-TCCC. The complex is stabilized by a dense network of methyl-oxygen hydrogen bonds involving the methyl groups of three isoleucine residues and the O2 and N3 atoms of the two central cytosine bases. Comparison with the recently solved structure of a specific protein-ssDNA complex involving the KH3 and KH4 domains of the far upstream element (FUSE) binding protein FBP suggests that the amino acid located five residues N-terminal of the invariant GXXG motif, which is characteristic of all KH domains, plays a crucial role in discrimination of the first two bases of the tetrad.


===COMPLEX OF THE KH3 DOMAIN OF HNRNP K WITH A SINGLE_STRANDED 10MER DNA OLIGONUCLEOTIDE===
Molecular basis of sequence-specific single-stranded DNA recognition by KH domains: solution structure of a complex between hnRNP K KH3 and single-stranded DNA.,Braddock DT, Baber JL, Levens D, Clore GM EMBO J. 2002 Jul 1;21(13):3476-85. PMID:12093748<ref>PMID:12093748</ref>


From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 1j5k" style="background-color:#fffaf0;"></div>


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==See Also==
The line below this paragraph, {{ABSTRACT_PUBMED_12093748}}, adds the Publication Abstract to the page
*[[Nucleoprotein 3D structures|Nucleoprotein 3D structures]]
(as it appears on PubMed at http://www.pubmed.gov), where 12093748 is the PubMed ID number.
== References ==
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<references/>
{{ABSTRACT_PUBMED_12093748}}
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</StructureSection>
==About this Structure==
1J5K is a 2 chains structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1J5K OCA].
 
==Reference==
<ref group="xtra">PMID:12093748</ref><references group="xtra"/>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Braddock, D T.]]
[[Category: Large Structures]]
[[Category: Clore, G M.]]
[[Category: Braddock DT]]
[[Category: C-myc oncogene]]
[[Category: Clore GM]]
[[Category: Ct element]]
[[Category: Hnrnp k]]
[[Category: Single-stranded dna binding protein]]
[[Category: Transcription factor]]
 
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