2ix7

From Proteopedia

(Difference between revisions)

Current revision

Structure of apo-calmodulin bound to unconventional myosin V

Structural highlights

2ix7 is a 3 chain structure with sequence from Mus musculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.5Å
Ligands:	,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

CALM1_MOUSE Calmodulin acts as part of a calcium signal transduction pathway by mediating the control of a large number of enzymes, ion channels, aquaporins and other proteins through calcium-binding. Calcium-binding is required for the activation of calmodulin. Among the enzymes to be stimulated by the calmodulin-calcium complex are a number of protein kinases, such as myosin light-chain kinases and calmodulin-dependent protein kinase type II (CaMK2), and phosphatases. Together with CCP110 and centrin, is involved in a genetic pathway that regulates the centrosome cycle and progression through cytokinesis. Is a regulator of voltage-dependent L-type calcium channels. Mediates calcium-dependent inactivation of CACNA1C. Positively regulates calcium-activated potassium channel activity of KCNN2. Forms a potassium channel complex with KCNQ1 and regulates electrophysiological activity of the channel via calcium-binding. Acts as a sensor to modulate the endoplasmic reticulum contacts with other organelles mediated by VMP1:ATP2A2.[UniProtKB:P0DP23]

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

A 2.5-A resolution structure of calcium-free calmodulin (CaM) bound to the first two IQ motifs of the murine myosin V heavy chain reveals an unusual CaM conformation. The C-terminal lobe of each CaM adopts a semi-open conformation that grips the first part of the IQ motif (IQxxxR), whereas the N-terminal lobe adopts a closed conformation that interacts more weakly with the second part of the motif (GxxxR). Variable residues in the IQ motif play a critical role in determining the precise structure of the bound CaM, such that even the consensus residues of different motifs show unique interactions with CaM. This complex serves as a model for the lever arm region of many classes of unconventional myosins, as well as other IQ motif-containing proteins such as neuromodulin and IQGAPs.

Crystal structure of apo-calmodulin bound to the first two IQ motifs of myosin V reveals essential recognition features.,Houdusse A, Gaucher JF, Krementsova E, Mui S, Trybus KM, Cohen C Proc Natl Acad Sci U S A. 2006 Dec 19;103(51):19326-31. Epub 2006 Dec 6. PMID:17151196^[1]

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

References

↑ Houdusse A, Gaucher JF, Krementsova E, Mui S, Trybus KM, Cohen C. Crystal structure of apo-calmodulin bound to the first two IQ motifs of myosin V reveals essential recognition features. Proc Natl Acad Sci U S A. 2006 Dec 19;103(51):19326-31. Epub 2006 Dec 6. PMID:17151196

1 Structural highlights
2 Function
3 Evolutionary Conservation
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/2ix7"

@@ Line 1: / Line 1: @@
-[[Image:2ix7.gif|left|200px]]
- {{Structure
+==Structure of apo-calmodulin bound to unconventional myosin V==
-|PDB= 2ix7 |SIZE=350|CAPTION= <scene name='initialview01'>2ix7</scene>, resolution 2.50&Aring;
+<StructureSection load='2ix7' size='340' side='right'caption='[[2ix7]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
-|SITE= <scene name='pdbsite=AC1:CYS+Binding+Site+For+Chain+C'>AC1</scene>
+== Structural highlights ==
-|LIGAND= <scene name='pdbligand=CYS:CYSTEINE'>CYS</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>
+<table><tr><td colspan='2'>[[2ix7]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2IX7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2IX7 FirstGlance]. <br>
-|ACTIVITY=
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.5&#8491;</td></tr>
-|GENE=
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CYS:CYSTEINE'>CYS</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
-|DOMAIN=
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2ix7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ix7 OCA], [https://pdbe.org/2ix7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ix7 RCSB], [https://www.ebi.ac.uk/pdbsum/2ix7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ix7 ProSAT]</span></td></tr>
-|RELATEDENTRY=
+</table>
-|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ix7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ix7 OCA], [http://www.ebi.ac.uk/pdbsum/2ix7 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2ix7 RCSB]</span>
+== Function ==
-}}
+[https://www.uniprot.org/uniprot/CALM1_MOUSE CALM1_MOUSE] Calmodulin acts as part of a calcium signal transduction pathway by mediating the control of a large number of enzymes, ion channels, aquaporins and other proteins through calcium-binding. Calcium-binding is required for the activation of calmodulin. Among the enzymes to be stimulated by the calmodulin-calcium complex are a number of protein kinases, such as myosin light-chain kinases and calmodulin-dependent protein kinase type II (CaMK2), and phosphatases. Together with CCP110 and centrin, is involved in a genetic pathway that regulates the centrosome cycle and progression through cytokinesis. Is a regulator of voltage-dependent L-type calcium channels. Mediates calcium-dependent inactivation of CACNA1C. Positively regulates calcium-activated potassium channel activity of KCNN2. Forms a potassium channel complex with KCNQ1 and regulates electrophysiological activity of the channel via calcium-binding. Acts as a sensor to modulate the endoplasmic reticulum contacts with other organelles mediated by VMP1:ATP2A2.[UniProtKB:P0DP23]
+== Evolutionary Conservation ==
+[[Image:Consurf_key_small.gif|200px|right]]
+Check<jmol>
+  <jmolCheckbox>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ix/2ix7_consurf.spt"</scriptWhenChecked>
+    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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/main_output.php?pdb_ID=2ix7 ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+A 2.5-A resolution structure of calcium-free calmodulin (CaM) bound to the first two IQ motifs of the murine myosin V heavy chain reveals an unusual CaM conformation. The C-terminal lobe of each CaM adopts a semi-open conformation that grips the first part of the IQ motif (IQxxxR), whereas the N-terminal lobe adopts a closed conformation that interacts more weakly with the second part of the motif (GxxxR). Variable residues in the IQ motif play a critical role in determining the precise structure of the bound CaM, such that even the consensus residues of different motifs show unique interactions with CaM. This complex serves as a model for the lever arm region of many classes of unconventional myosins, as well as other IQ motif-containing proteins such as neuromodulin and IQGAPs.
-'''STRUCTURE OF APO-CALMODULIN BOUND TO UNCONVENTIONAL MYOSIN V'''
+Crystal structure of apo-calmodulin bound to the first two IQ motifs of myosin V reveals essential recognition features.,Houdusse A, Gaucher JF, Krementsova E, Mui S, Trybus KM, Cohen C Proc Natl Acad Sci U S A. 2006 Dec 19;103(51):19326-31. Epub 2006 Dec 6. PMID:17151196<ref>PMID:17151196</ref>
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
+</div>
+<div class="pdbe-citations 2ix7" style="background-color:#fffaf0;"></div>
-==Overview==
+==See Also==
-A 2.5-A resolution structure of calcium-free calmodulin (CaM) bound to the first two IQ motifs of the murine myosin V heavy chain reveals an unusual CaM conformation. The C-terminal lobe of each CaM adopts a semi-open conformation that grips the first part of the IQ motif (IQxxxR), whereas the N-terminal lobe adopts a closed conformation that interacts more weakly with the second part of the motif (GxxxR). Variable residues in the IQ motif play a critical role in determining the precise structure of the bound CaM, such that even the consensus residues of different motifs show unique interactions with CaM. This complex serves as a model for the lever arm region of many classes of unconventional myosins, as well as other IQ motif-containing proteins such as neuromodulin and IQGAPs.
+*[[Calmodulin 3D structures|Calmodulin 3D structures]]
+*[[Myosin 3D Structures|Myosin 3D Structures]]
-==About this Structure==
+== References ==
-IX7 is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2IX7 OCA].
+<references/>
+__TOC__
-==Reference==
+</StructureSection>
-Crystal structure of apo-calmodulin bound to the first two IQ motifs of myosin V reveals essential recognition features., Houdusse A, Gaucher JF, Krementsova E, Mui S, Trybus KM, Cohen C, Proc Natl Acad Sci U S A. 2006 Dec 19;103(51):19326-31. Epub 2006 Dec 6. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17151196 17151196]
+[[Category: Large Structures]]
 [[Category: Mus musculus]]
-[[Category: Protein complex]]
+[[Category: Cohen C]]
-[[Category: Cohen, C.]]
+[[Category: Gaucher JF]]
-[[Category: Gaucher, J F.]]
+[[Category: Houdusse A]]
-[[Category: Houdusse, A.]]
+[[Category: Krementsova E]]
-[[Category: Krementsova, E.]]
+[[Category: Mui S]]
-[[Category: Mui, S.]]
+[[Category: Trybus KM]]
-[[Category: Trybus, K M.]]
-[[Category: acetylation]]
-[[Category: actin-binding]]
-[[Category: atp-binding]]
-[[Category: ca2+ regulation]]
-[[Category: calcium]]
-[[Category: calmodulin]]
-[[Category: calmodulin-binding]]
-[[Category: coiled coil]]
-[[Category: complex]]
-[[Category: contractile protein]]
-[[Category: iq motif]]
-[[Category: metal binding]]
-[[Category: methylation]]
-[[Category: motor protein]]
-[[Category: myosin]]
-[[Category: nucleotide-binding]]
-[[Category: phosphorylation]]
-[[Category: ubl conjugation]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 03:49:56 2008''

2ix7

From Proteopedia

Current revision

Structure of apo-calmodulin bound to unconventional myosin V

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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