1ux4

From Proteopedia

(Difference between revisions)

Revision as of 07:51, 28 March 2018

Crystal structures of a Formin Homology-2 domain reveal a tethered-dimer architecture

Structural highlights

1ux4 is a 2 chain structure with sequence from Atcc 18824. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	1ux5
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[BNI1_YEAST] Required for the assembly of F-actin structures, such as actin cables and stress fibers. Nucleates actin filaments. Binds to the barbed end of the actin filament and acts as leaky capper, slowing both polymerization and depolymerization. Protects the growing actin fiber from tight capping proteins and so increases the time of elongation and the total amount of F-actin. May organize microtubules by mediating spindle positioning and movement in the budding process. Potential target of the RHO family members.^[1] ^[2]

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

Formin proteins participate in a wide range of cytoskeletal processes in all eukaryotes. The defining feature of formins is a highly conserved approximately 400 residue region, the Formin Homology-2 (FH2) domain, which has recently been found to nucleate actin filaments. Here we report crystal structures of the S. cerevesiae Bni1p FH2 domain. The mostly alpha-helical FH2 domain forms a unique "tethered dimer" in which two elongated actin binding heads are tied together at either end by an unusual lasso and linker structure. Biochemical and crystallographic observations indicate that the dimer is stable but flexible, with flexibility between the two halves of the dimer conferred by the linker segments. Although each half of the dimer is competent to interact with filament ends, the intact dimer is required for actin nucleation and processive capping. The tethered dimer architecture may allow formins to stair-step on the barbed end of an elongating nascent filament.

Crystal structures of a Formin Homology-2 domain reveal a tethered dimer architecture.,Xu Y, Moseley JB, Sagot I, Poy F, Pellman D, Goode BL, Eck MJ Cell. 2004 Mar 5;116(5):711-23. PMID:15006353^[3]

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

References

↑ Lee L, Klee SK, Evangelista M, Boone C, Pellman D. Control of mitotic spindle position by the Saccharomyces cerevisiae formin Bni1p. J Cell Biol. 1999 Mar 8;144(5):947-61. PMID:10085293
↑ Zigmond SH, Evangelista M, Boone C, Yang C, Dar AC, Sicheri F, Forkey J, Pring M. Formin leaky cap allows elongation in the presence of tight capping proteins. Curr Biol. 2003 Oct 14;13(20):1820-3. PMID:14561409
↑ Xu Y, Moseley JB, Sagot I, Poy F, Pellman D, Goode BL, Eck MJ. Crystal structures of a Formin Homology-2 domain reveal a tethered dimer architecture. Cell. 2004 Mar 5;116(5):711-23. PMID:15006353

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/1ux4"

@@ Line 1: / Line 1: @@
-==CRYSTAL STRUCTURES OF A FORMIN HOMOLOGY-2 DOMAIN REVEAL A TETHERED-DIMER ARCHITECTURE==
+==Crystal structures of a Formin Homology-2 domain reveal a tethered-dimer architecture==
 <StructureSection load='1ux4' size='340' side='right' caption='[[1ux4]], [[Resolution|resolution]] 3.30&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[1ux4]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_18824 Atcc 18824]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1UX4 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1UX4 FirstGlance]. <br>
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1ux5|1ux5]]</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=1ux4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ux4 OCA], [http://pdbe.org/1ux4 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1ux4 RCSB], [http://www.ebi.ac.uk/pdbsum/1ux4 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=1ux4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ux4 OCA], [http://pdbe.org/1ux4 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1ux4 RCSB], [http://www.ebi.ac.uk/pdbsum/1ux4 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1ux4 ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 12: / Line 13: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ux/1ux4_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ux/1ux4_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
@@ Line 39: / Line 40: @@
 [[Category: Sagot, I]]
 [[Category: Xu, Y]]
+[[Category: Coiled coil]]
 [[Category: Fh2 actin cytoskeleton]]
 [[Category: Structural protein]]

1ux4

From Proteopedia

Revision as of 07:51, 28 March 2018

Crystal structures of a Formin Homology-2 domain reveal a tethered-dimer architecture

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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