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[[Image:1rfq.gif|left|200px]]
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{{STRUCTURE_1rfq|  PDB=1rfq  |  SCENE=  }}
'''Actin Crystal Dynamics: Structural Implications for F-actin Nucleation, Polymerization and Branching Mediated by the Anti-parallel Dimer'''


==Actin Crystal Dynamics: Structural Implications for F-actin Nucleation, Polymerization and Branching Mediated by the Anti-parallel Dimer==
<StructureSection load='1rfq' size='340' side='right'caption='[[1rfq]], [[Resolution|resolution]] 3.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1rfq]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Oryctolagus_cuniculus Oryctolagus cuniculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RFQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1RFQ FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ATP:ADENOSINE-5-TRIPHOSPHATE'>ATP</scene>, <scene name='pdbligand=LAR:LATRUNCULIN+A'>LAR</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></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=1rfq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1rfq OCA], [https://pdbe.org/1rfq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1rfq RCSB], [https://www.ebi.ac.uk/pdbsum/1rfq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1rfq ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/ACTS_RABIT ACTS_RABIT] Actins are highly conserved proteins that are involved in various types of cell motility and are ubiquitously expressed in all eukaryotic cells.
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Actin filament nucleation, polymerization, and branching are crucial steps in many forms of cell motility, cell shape, and intracellular organelle movements in a wide range of organisms. Previous biochemical data suggests that an anti-parallel actin dimer can incorporate itself into growing filamentous actin (F-actin) and has a role in branching. Furthermore, it is a widespread belief that nucleation is spawned from an actin trimer complex. Here we present the structures of actin dimers and trimers in two tetragonal crystal systems P4(3)2(1)2 and P4(3). Both crystal systems formed by an induced condensation transformation of a previously reported orthorhombic crystal system P2(1)2(1)2(1). Comparison between the three crystal systems demonstrates the dynamics and flexibility of actin-actin interactions. The dimer and trimer actin rearrangements observed between the three crystal systems may provide insight to in vivo actin-actin interactions that occur during the nucleation, polymerization, and branching of F-actin.


==Overview==
Actin crystal dynamics: structural implications for F-actin nucleation, polymerization, and branching mediated by the anti-parallel dimer.,Reutzel R, Yoshioka C, Govindasamy L, Yarmola EG, Agbandje-McKenna M, Bubb MR, McKenna R J Struct Biol. 2004 Jun;146(3):291-301. PMID:15099571<ref>PMID:15099571</ref>
Actin filament nucleation, polymerization, and branching are crucial steps in many forms of cell motility, cell shape, and intracellular organelle movements in a wide range of organisms. Previous biochemical data suggests that an anti-parallel actin dimer can incorporate itself into growing filamentous actin (F-actin) and has a role in branching. Furthermore, it is a widespread belief that nucleation is spawned from an actin trimer complex. Here we present the structures of actin dimers and trimers in two tetragonal crystal systems P4(3)2(1)2 and P4(3). Both crystal systems formed by an induced condensation transformation of a previously reported orthorhombic crystal system P2(1)2(1)2(1). Comparison between the three crystal systems demonstrates the dynamics and flexibility of actin-actin interactions. The dimer and trimer actin rearrangements observed between the three crystal systems may provide insight to in vivo actin-actin interactions that occur during the nucleation, polymerization, and branching of F-actin.


==About this Structure==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
1RFQ is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Oryctolagus_cuniculus Oryctolagus cuniculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RFQ OCA].
</div>
<div class="pdbe-citations 1rfq" style="background-color:#fffaf0;"></div>


==Reference==
==See Also==
Actin crystal dynamics: structural implications for F-actin nucleation, polymerization, and branching mediated by the anti-parallel dimer., Reutzel R, Yoshioka C, Govindasamy L, Yarmola EG, Agbandje-McKenna M, Bubb MR, McKenna R, J Struct Biol. 2004 Jun;146(3):291-301. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15099571 15099571]
*[[Actin 3D structures|Actin 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Oryctolagus cuniculus]]
[[Category: Oryctolagus cuniculus]]
[[Category: Single protein]]
[[Category: Agbandje-McKenna M]]
[[Category: Agbandje-McKenna, M.]]
[[Category: Bubb MR]]
[[Category: Bubb, M R.]]
[[Category: Govindasamy L]]
[[Category: Govindasamy, L.]]
[[Category: McKenna R]]
[[Category: McKenna, R.]]
[[Category: Reutzel R]]
[[Category: Reutzel, R.]]
[[Category: Yarmola EG]]
[[Category: Yarmola, E G.]]
[[Category: Yoshioka C]]
[[Category: Yoshioka, C.]]
[[Category: Anti-parallel dimer]]
[[Category: Filament]]
[[Category: Nucleation]]
[[Category: Polymerization]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 07:26:41 2008''

Latest revision as of 06:04, 23 August 2023

Actin Crystal Dynamics: Structural Implications for F-actin Nucleation, Polymerization and Branching Mediated by the Anti-parallel Dimer

1rfq, resolution 3.00Å

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