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[[Image:3byh.jpg|left|200px]]


{{Structure
==Model of actin-fimbrin ABD2 complex==
|PDB= 3byh |SIZE=350|CAPTION= <scene name='initialview01'>3byh</scene>
<SX load='3byh' size='340' side='right' viewer='molstar' caption='[[3byh]], [[Resolution|resolution]] 12.00&Aring;' scene=''>
|SITE=  
== Structural highlights ==
|LIGAND=  
<table><tr><td colspan='2'>[[3byh]] 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=3BYH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3BYH FirstGlance]. <br>
|ACTIVITY=  
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 12&#8491;</td></tr>
|GENE= PS1TP5BP1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3byh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3byh OCA], [https://pdbe.org/3byh PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3byh RCSB], [https://www.ebi.ac.uk/pdbsum/3byh PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3byh ProSAT]</span></td></tr>
|DOMAIN=
</table>
|RELATEDENTRY=
== Disease ==
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3byh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3byh OCA], [http://www.ebi.ac.uk/pdbsum/3byh PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=3byh RCSB]</span>
[https://www.uniprot.org/uniprot/ACTB_HUMAN ACTB_HUMAN] Defects in ACTB are a cause of dystonia juvenile-onset (DYTJ) [MIM:[https://omim.org/entry/607371 607371]. DYTJ is a form of dystonia with juvenile onset. Dystonia is defined by the presence of sustained involuntary muscle contraction, often leading to abnormal postures. DYTJ patients manifest progressive, generalized, dopa-unresponsive dystonia, developmental malformations and sensory hearing loss.<ref>PMID:16685646</ref>  Defects in ACTB are the cause of Baraitser-Winter syndrome type 1 (BRWS1) [MIM:[https://omim.org/entry/243310 243310]. A rare developmental disorder characterized by the combination of congenital ptosis, high-arched eyebrows, hypertelorism, ocular colobomata, and a brain malformation consisting of anterior-predominant lissencephaly. Other typical features include postnatal short stature and microcephaly, intellectual disability, seizures, and hearing loss.<ref>PMID:22366783</ref>
}}
== Function ==
[https://www.uniprot.org/uniprot/ACTB_HUMAN ACTB_HUMAN] Actins are highly conserved proteins that are involved in various types of cell motility and are ubiquitously expressed in all eukaryotic 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/by/3byh_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=3byh ConSurf].
<div style="clear:both"></div>


'''Model of actin-fimbrin ABD2 complex'''
==See Also==
 
*[[Actin 3D structures|Actin 3D structures]]
 
== References ==
==Overview==
<references/>
Many actin binding proteins have a modular architecture, and calponin-homology (CH) domains are one such structurally conserved module found in numerous proteins that interact with F-actin. The manner in which CH-domains bind F-actin has been controversial. Using cryo-EM and a single-particle approach to helical reconstruction, we have generated 12-A-resolution maps of F-actin alone and F-actin decorated with a fragment of human fimbrin (L-plastin) containing tandem CH-domains. The high resolution allows an unambiguous fit of the crystal structure of fimbrin into the map. The interaction between fimbrin ABD2 (actin binding domain 2) and F-actin is different from any interaction previously observed or proposed for tandem CH-domain proteins, showing that the structural conservation of the CH-domains does not lead to a conserved mode of interaction with F-actin. Both the stapling of adjacent actin protomers and the additional closure of the nucleotide binding cleft in F-actin when the fimbrin fragment binds may explain how fimbrin can stabilize actin filaments. A mechanism is proposed where ABD1 of fimbrin becomes activated for binding a second actin filament after ABD2 is bound to a first filament, and this can explain how mutations of residues buried in the interface between ABD2 and ABD1 can rescue temperature-sensitive defects in actin.
__TOC__
 
</SX>
==About this Structure==
3BYH is a [[Protein complex]] structure of sequences 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=3BYH OCA].
 
==Reference==
High-resolution cryo-EM structure of the F-actin-fimbrin/plastin ABD2 complex., Galkin VE, Orlova A, Cherepanova O, Lebart MC, Egelman EH, Proc Natl Acad Sci U S A. 2008 Feb 5;105(5):1494-8. Epub 2008 Jan 30. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/18234857 18234857]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Protein complex]]
[[Category: Large Structures]]
[[Category: Cherepanova, O.]]
[[Category: Cherepanova O]]
[[Category: Egelman, E H.]]
[[Category: Egelman EH]]
[[Category: Galkin, V E.]]
[[Category: Galkin VE]]
[[Category: Lebart, M C.]]
[[Category: Lebart MC]]
[[Category: Orlova, A.]]
[[Category: Orlova A]]
[[Category: acetylation]]
[[Category: atp-binding]]
[[Category: cytoplasm]]
[[Category: cytoskeleton]]
[[Category: helical filament]]
[[Category: methylation]]
[[Category: nucleotide-binding]]
[[Category: phosphoprotein]]
[[Category: protein polymer]]
[[Category: structural protein]]
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 05:29:42 2008''
Retrieved from "https://proteopedia.org/3byh"