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[[Image:3ull.gif|left|200px]]


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==HUMAN MITOCHONDRIAL SINGLE-STRANDED DNA BINDING PROTEIN==
The line below this paragraph, containing "STRUCTURE_3ull", creates the "Structure Box" on the page.
<StructureSection load='3ull' size='340' side='right'caption='[[3ull]], [[Resolution|resolution]] 2.40&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'>[[3ull]] is a 2 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=3ULL OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3ULL 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]] 2.4&#8491;</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=3ull FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ull OCA], [https://pdbe.org/3ull PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3ull RCSB], [https://www.ebi.ac.uk/pdbsum/3ull PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3ull ProSAT]</span></td></tr>
{{STRUCTURE_3ull|  PDB=3ull |  SCENE= }}
</table>
== Function ==
[https://www.uniprot.org/uniprot/SSBP_HUMAN SSBP_HUMAN] This protein binds preferentially and cooperatively to ss-DNA. Probably involved in mitochondrial DNA replication. Associates with mitochondrial DNA.
== 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/ul/3ull_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=3ull ConSurf].
<div style="clear:both"></div>


'''HUMAN MITOCHONDRIAL SINGLE-STRANDED DNA BINDING PROTEIN'''
==See Also==
 
*[[Single-stranded DNA-binding protein 3D structures|Single-stranded DNA-binding protein 3D structures]]
 
__TOC__
==Overview==
</StructureSection>
We solved the crystal structure of the homotetrameric single-stranded DNA binding (SSB) protein from human mitochondria at a resolution of 2.4 A. The tetramer is formed by two dimers interacting head-to-head and shows D2 symmetry. Sequence-related tetrameric SSB proteins occur in prokaryotes and eukaryotic mitochondria; this is the first report of an atomic resolution structure of this type of protein. Using biochemical data and analysis of sequence homologies, we were able to correlate the functional properties with structure. We propose that ssDNA wraps around the tetrameric HsmtSSB protein through electropositive channels guided by flexible loops.
 
==About this Structure==
3ULL is a [[Single protein]] structure of 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=3ULL OCA].
 
==Reference==
Crystal structure of human mitochondrial single-stranded DNA binding protein at 2.4 A resolution., Yang C, Curth U, Urbanke C, Kang C, Nat Struct Biol. 1997 Feb;4(2):153-7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9033597 9033597]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Single protein]]
[[Category: Large Structures]]
[[Category: Curth, U.]]
[[Category: Curth U]]
[[Category: Kang, C.]]
[[Category: Kang C]]
[[Category: Urbanke, C.]]
[[Category: Urbanke C]]
[[Category: Yang, C.]]
[[Category: Yang C]]
[[Category: Dna replication]]
[[Category: Dna-binding protein]]
[[Category: Mitochondrion]]
[[Category: Transit peptide]]
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