1s2h

From Proteopedia

(Difference between revisions)

Revision as of 06:50, 8 March 2018

The Mad2 spindle checkpoint protein possesses two distinct natively folded states

Structural highlights

1s2h is a 1 chain structure with sequence from Human. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	1duj, 1klq
Gene:	MAD2L1, MAD2 (HUMAN)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[MD2L1_HUMAN] Component of the spindle-assembly checkpoint that prevents the onset of anaphase until all chromosomes are properly aligned at the metaphase plate. Required for the execution of the mitotic checkpoint which monitors the process of kinetochore-spindle attachment and inhibits the activity of the anaphase promoting complex by sequestering CDC20 until all chromosomes are aligned at the metaphase plate.^[1] ^[2] ^[3]

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

The spindle checkpoint delays chromosome segregation in response to misaligned sister chromatids during mitosis, thus ensuring the fidelity of chromosome inheritance. Through binding to Cdc20, the Mad2 spindle checkpoint protein inhibits the target of this checkpoint, the ubiquitin protein ligase APC/C(Cdc20). We now show that without cofactor binding or covalent modification Mad2 adopts two distinct folded conformations at equilibrium (termed N1-Mad2 and N2-Mad2). The structure of N2-Mad2 has been determined by NMR spectroscopy. N2-Mad2 is much more potent in APC/C inhibition. Overexpression of a Mad2 mutant that specifically sequesters N2-Mad2 partially blocks checkpoint signaling in living cells. The two Mad2 conformers interconvert slowly in vitro, but interconversion is accelerated by a fragment of Mad1, an upstream regulator of Mad2. Our results suggest that the unusual two-state behavior of Mad2 is critical for spindle checkpoint signaling.

The Mad2 spindle checkpoint protein has two distinct natively folded states.,Luo X, Tang Z, Xia G, Wassmann K, Matsumoto T, Rizo J, Yu H Nat Struct Mol Biol. 2004 Apr;11(4):338-45. Epub 2004 Mar 14. PMID:15024386^[4]

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

References

↑ Luo X, Fang G, Coldiron M, Lin Y, Yu H, Kirschner MW, Wagner G. Structure of the Mad2 spindle assembly checkpoint protein and its interaction with Cdc20. Nat Struct Biol. 2000 Mar;7(3):224-9. PMID:10700282 doi:10.1038/73338
↑ Luo X, Tang Z, Rizo J, Yu H. The Mad2 spindle checkpoint protein undergoes similar major conformational changes upon binding to either Mad1 or Cdc20. Mol Cell. 2002 Jan;9(1):59-71. PMID:11804586
↑ Luo X, Tang Z, Xia G, Wassmann K, Matsumoto T, Rizo J, Yu H. The Mad2 spindle checkpoint protein has two distinct natively folded states. Nat Struct Mol Biol. 2004 Apr;11(4):338-45. Epub 2004 Mar 14. PMID:15024386 doi:10.1038/nsmb748
↑ Luo X, Tang Z, Xia G, Wassmann K, Matsumoto T, Rizo J, Yu H. The Mad2 spindle checkpoint protein has two distinct natively folded states. Nat Struct Mol Biol. 2004 Apr;11(4):338-45. Epub 2004 Mar 14. PMID:15024386 doi:10.1038/nsmb748

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/1s2h"

@@ Line 1: / Line 1: @@
 ==The Mad2 spindle checkpoint protein possesses two distinct natively folded states==
 <StructureSection load='1s2h' size='340' side='right' caption='[[1s2h]], [[NMR_Ensembles_of_Models | 1 NMR models]]' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1duj|1duj]], [[1klq|1klq]]</td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">MAD2L1, MAD2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=1s2h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1s2h OCA], [http://pdbe.org/1s2h PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1s2h RCSB], [http://www.ebi.ac.uk/pdbsum/1s2h 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=1s2h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1s2h OCA], [http://pdbe.org/1s2h PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1s2h RCSB], [http://www.ebi.ac.uk/pdbsum/1s2h PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1s2h ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 13: / Line 14: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/s2/1s2h_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/s2/1s2h_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/chain_selection.php?pdb_ID=2ata ConSurf].
+</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=1s2h ConSurf].
 <div style="clear:both"></div>
 <div style="background-color:#fffaf0;">

1s2h

From Proteopedia

Revision as of 06:50, 8 March 2018

The Mad2 spindle checkpoint protein possesses two distinct natively folded states

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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