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==Molecular Basis for Multiple Ligand Binding of Calsequestrin and Potential Inhibition by Caffeine and Gallocatecin==
==Molecular Basis for Multiple Ligand Binding of Calsequestrin and Potential Inhibition by Caffeine and Gallocatecin==
<StructureSection load='3v1w' size='340' side='right' caption='[[3v1w]], [[Resolution|resolution]] 1.91&Aring;' scene=''>
<StructureSection load='3v1w' size='340' side='right'caption='[[3v1w]], [[Resolution|resolution]] 1.91&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3v1w]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Oryctolagus_cuniculus Oryctolagus cuniculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3V1W OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3V1W FirstGlance]. <br>
<table><tr><td colspan='2'>[[3v1w]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Oryctolagus_cuniculus Oryctolagus cuniculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3V1W OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3V1W FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=MPD:(4S)-2-METHYL-2,4-PENTANEDIOL'>MPD</scene>, <scene name='pdbligand=MRD:(4R)-2-METHYLPENTANE-2,4-DIOL'>MRD</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.908&#8491;</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=3v1w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3v1w OCA], [http://pdbe.org/3v1w PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3v1w RCSB], [http://www.ebi.ac.uk/pdbsum/3v1w PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3v1w ProSAT]</span></td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=MPD:(4S)-2-METHYL-2,4-PENTANEDIOL'>MPD</scene>, <scene name='pdbligand=MRD:(4R)-2-METHYLPENTANE-2,4-DIOL'>MRD</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3v1w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3v1w OCA], [https://pdbe.org/3v1w PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3v1w RCSB], [https://www.ebi.ac.uk/pdbsum/3v1w PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3v1w ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/CASQ1_RABIT CASQ1_RABIT]] Calsequestrin is a high-capacity, moderate affinity, calcium-binding protein and thus acts as an internal calcium store in muscle. The release of calcium bound to calsequestrin through a calcium release channel triggers muscle contraction. The skeletal muscle isoform (CASQ1) binds around 80 Ca(2+) ions, while the cardiac isoform (CASQ2) binds approximately 60 Ca(2+) ions (By similarity).  
[https://www.uniprot.org/uniprot/CASQ1_RABIT CASQ1_RABIT] Calsequestrin is a high-capacity, moderate affinity, calcium-binding protein and thus acts as an internal calcium store in muscle. The release of calcium bound to calsequestrin through a calcium release channel triggers muscle contraction. The skeletal muscle isoform (CASQ1) binds around 80 Ca(2+) ions, while the cardiac isoform (CASQ2) binds approximately 60 Ca(2+) ions (By similarity).
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Large Structures]]
[[Category: Oryctolagus cuniculus]]
[[Category: Oryctolagus cuniculus]]
[[Category: Kang, C]]
[[Category: Kang C]]
[[Category: Lewis, K M]]
[[Category: Lewis KM]]
[[Category: Muralidharan, A K]]
[[Category: Muralidharan AK]]
[[Category: Nissen, M N]]
[[Category: Nissen MN]]
[[Category: Sanchez, E J]]
[[Category: Sanchez EJ]]
[[Category: Subramanian, A K]]
[[Category: Subramanian AK]]
[[Category: Calcium binding protein]]
[[Category: Thioredoxin fold]]

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