6b5d

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(Difference between revisions)

Revision as of 09:40, 18 July 2018

Structural Basis for Katanin Self-Assembly

Structural highlights

6b5d is a 1 chain structure with sequence from Caeel. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
NonStd Res:
Related:	6b5c
Gene:	mei-1, T01G9.5 (CAEEL)
Activity:	Microtubule-severing ATPase, with EC number 3.6.4.3
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[KTNA1_CAEEL] Catalytic subunit of a complex which severs microtubules in an ATP-dependent manner. Microtubule severing may promote rapid reorganization of cellular microtubule arrays. Required specifically for meiotic spindle formation in the female germline; the presence of this protein is inimical to the formation of mitotic spindles (PubMed:8027178, PubMed:10809666, PubMed:12885567). In body wall muscles, regulates organization of myosin thick filaments (PubMed:22621901).[HAMAP-Rule:MF_03023]^[1] ^[2] ^[3] ^[4]

Publication Abstract from PubMed

The reorganization of microtubules in mitosis, meiosis and development requires the microtubule-severing activity of katanin. Katanin is a heterodimer composed of an ATPase Associated with diverse cellular Activities (AAA) subunit and a regulatory subunit. Microtubule severing requires ATP hydrolysis by katanin's conserved AAA ATPase domains. Whereas other AAA ATPases form stable hexamers, we show that katanin only forms monomer or dimers of heterodimers in solution. Katanin oligomers consistent with hexamers of heterodimers or heterododecamers were only observed for an ATP hydrolysis deficient mutant in the presence of ATP. X-ray structures of katanin's AAA ATPase in monomeric nucleotide-free and pseudo-oligomeric ADP-bound states reveal conformational changes in AAA subdomains that explained the structural basis for instability of katanin heterododecamer. We propose that the rapid dissociation of katanin AAA oligomers may lead to an auto-inhibited state that prevents inappropriate microtubule severing, or that cyclical disassembly into heterodimers may critically contribute to the microtubule-severing mechanism.

Structural Basis for Disassembly of Katanin Heterododecamers.,Nithianantham S, McNally FJ, Al-Bassam J J Biol Chem. 2018 May 11. pii: RA117.001215. doi: 10.1074/jbc.RA117.001215. PMID:29752405^[5]

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

References

↑ Srayko M, Buster DW, Bazirgan OA, McNally FJ, Mains PE. MEI-1/MEI-2 katanin-like microtubule severing activity is required for Caenorhabditis elegans meiosis. Genes Dev. 2000 May 1;14(9):1072-84. PMID:10809666
↑ Yang HY, McNally K, McNally FJ. MEI-1/katanin is required for translocation of the meiosis I spindle to the oocyte cortex in C elegans. Dev Biol. 2003 Aug 1;260(1):245-59. PMID:12885567
↑ Wilson KJ, Qadota H, Mains PE, Benian GM. UNC-89 (obscurin) binds to MEL-26, a BTB-domain protein, and affects the function of MEI-1 (katanin) in striated muscle of Caenorhabditis elegans. Mol Biol Cell. 2012 Jul;23(14):2623-34. doi: 10.1091/mbc.E12-01-0055. Epub 2012, May 23. PMID:22621901 doi:http://dx.doi.org/10.1091/mbc.E12-01-0055
↑ Clark-Maguire S, Mains PE. Localization of the mei-1 gene product of Caenorhaditis elegans, a meiotic-specific spindle component. J Cell Biol. 1994 Jul;126(1):199-209. PMID:8027178
↑ Nithianantham S, McNally FJ, Al-Bassam J. Structural Basis for Disassembly of Katanin Heterododecamers. J Biol Chem. 2018 May 11. pii: RA117.001215. doi: 10.1074/jbc.RA117.001215. PMID:29752405 doi:http://dx.doi.org/10.1074/jbc.RA117.001215

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/6b5d"

@@ Line 3: / Line 3: @@
 <StructureSection load='6b5d' size='340' side='right' caption='[[6b5d]], [[Resolution|resolution]] 3.10&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[6b5d]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6B5D OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6B5D FirstGlance]. <br>
+<table><tr><td colspan='2'>[[6b5d]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Caeel Caeel]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6B5D OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6B5D FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene></td></tr>
 <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[6b5c|6b5c]]</td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">mei-1, T01G9.5 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=6239 CAEEL])</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Microtubule-severing_ATPase Microtubule-severing ATPase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.6.4.3 3.6.4.3] </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=6b5d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6b5d OCA], [http://pdbe.org/6b5d PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6b5d RCSB], [http://www.ebi.ac.uk/pdbsum/6b5d PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6b5d ProSAT]</span></td></tr>
@@ Line 25: / Line 26: @@
 __TOC__
 </StructureSection>
+[[Category: Caeel]]
 [[Category: Microtubule-severing ATPase]]
 [[Category: Al-Bassam, J]]

6b5d

From Proteopedia

Revision as of 09:40, 18 July 2018

Structural Basis for Katanin Self-Assembly

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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