3wuq

From Proteopedia

(Difference between revisions)

Revision as of 18:54, 10 December 2016

Structure of the entire stalk region of the dynein motor domain

Structural highlights

3wuq is a 1 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	3vkg, 3vkh
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[DYHC1_MOUSE] Defects in Dync1h1 are the cause of the 'Legs at odd angles' (LOA) phenotype, an autosomal dominant trait where affected animals display unusual twisting of the body and clenching of the hindlimbs when suspended by the tail. Heterozygotes suffer age-related progressive loss of muscle tone and locomotor ability without major reduction in life-span while homozygotes show a more severe phenotype with an inability to move or feed, and die within 24 hours of birth. LOA mutants display defects in migration of facial motor neuron cell bodies and impaired retrograde transport in spinal cord motor neurons. Defects in Dync1h1 are the cause of the Cramping 1 (Cra1) phenotype, an autosomal dominant trait where affected animals display unusual twisting of the body and clenching of the hindlimbs when suspended by the tail. Heterozygotes suffer age-related progressive loss of muscle tone and locomotor ability without major reduction in life-span while homozygotes show a more severe phenotype with an inability to move or feed, and die within 24 hours of birth.

Function

[DYHC1_MOUSE] Cytoplasmic dynein 1 acts as a motor for the intracellular retrograde motility of vesicles and organelles along microtubules. Dynein has ATPase activity; the force-producing power stroke is thought to occur on release of ADP.

Publication Abstract from PubMed

Dyneins are large microtubule-based motor complexes that power a range of cellular processes including the transport of organelles, as well as the beating of cilia and flagella. The motor domain is located within the dynein heavy chain and comprises an N-terminal mechanical linker element, a central ring of six AAA+ modules of which four bind or hydrolyze ATP, and a long stalk extending from the AAA+ring with a microtubule-binding domain (MTBD) at its tip. A crucial mechanism underlying the motile activity of cytoskeletal motor proteins is precise coupling between the ATPase and track-binding activities. In dynein, a stalk region consisting of a long (~15nm) antiparallel coiled coil separates these two activities, which must facilitate communication between them. This communication is mediated by a small degree of helix sliding in the coiled coil. However, no high-resolution structure is available of the entire stalk region including the MTBD. Here, we have reported the structure of the entire stalk region of mouse cytoplasmic dynein in a weak microtubule-binding state, which was determined using X-ray crystallography, and have compared it with the dynein motor domain from Dictyostelium discoideum in a strong microtubule-binding state and with a mouse MTBD with its distal portion of the coiled coil fused to seryl-tRNA synthetase from Thermus thermophilus. Our results strongly support the helix-sliding model based on the complete structure of the dynein stalk with a different form of coiled-coil packing. We also propose a plausible mechanism of helix sliding together with further analysis using molecular dynamics simulations. Our results present the importance of conserved proline residues for an elastic motion of stalk coiled coil and imply the manner of change between high-affinity state and low-affinity state of MTBD.

Structure of the Entire Stalk Region of the Dynein Motor Domain.,Nishikawa Y, Oyama T, Kamiya N, Kon T, Toyoshima YY, Nakamura H, Kurisu G J Mol Biol. 2014 Jul 21. pii: S0022-2836(14)00362-3. doi:, 10.1016/j.jmb.2014.06.023. PMID:25058684^[1]

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

References

↑ Nishikawa Y, Oyama T, Kamiya N, Kon T, Toyoshima YY, Nakamura H, Kurisu G. Structure of the Entire Stalk Region of the Dynein Motor Domain. J Mol Biol. 2014 Jul 21. pii: S0022-2836(14)00362-3. doi:, 10.1016/j.jmb.2014.06.023. PMID:25058684 doi:http://dx.doi.org/10.1016/j.jmb.2014.06.023

1 Structural highlights
2 Disease
3 Function
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3wuq"

@@ Line 1: / Line 1: @@
 ==Structure of the entire stalk region of the dynein motor domain==
 <StructureSection load='3wuq' size='340' side='right' caption='[[3wuq]], [[Resolution|resolution]] 3.50&Aring;' scene=''>
@@ Line 4: / Line 5: @@
 <table><tr><td colspan='2'>[[3wuq]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3WUQ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3WUQ FirstGlance]. <br>
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3vkg|3vkg]], [[3vkh|3vkh]]</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=3wuq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3wuq OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3wuq RCSB], [http://www.ebi.ac.uk/pdbsum/3wuq 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=3wuq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3wuq OCA], [http://pdbe.org/3wuq PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3wuq RCSB], [http://www.ebi.ac.uk/pdbsum/3wuq PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3wuq ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 18: / Line 19: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 3wuq" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Dynein|Dynein]]
 == References ==
 <references/>

3wuq

From Proteopedia

Revision as of 18:54, 10 December 2016

Structure of the entire stalk region of the dynein motor domain

Structural highlights

Disease

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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