OCA at 08:19, 25 May 2022

OCA — Wed, 25 May 2022 08:19:16 GMT

←Older revision		Revision as of 08:19, 25 May 2022
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	==CryoEM structure of human low-voltage activated T-type calcium channel Cav3.3 in complex with mibefradil (MIB)==		==CryoEM structure of human low-voltage activated T-type calcium channel Cav3.3 in complex with mibefradil (MIB)==
-	<StructureSection load='7wlj' size='340' side='right'caption='[[7wlj]]' scene=''>	+	<StructureSection load='7wlj' size='340' side='right'caption='[[7wlj]], [[Resolution\|resolution]] 3.90Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7WLJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7WLJ FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[7wlj]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7WLJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7WLJ FirstGlance]. <br>
-	</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=7wlj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7wlj OCA], [https://pdbe.org/7wlj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7wlj RCSB], [https://www.ebi.ac.uk/pdbsum/7wlj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7wlj ProSAT]</span></td></tr>	+	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=3PE:1,2-DIACYL-SN-GLYCERO-3-PHOSPHOETHANOLAMINE'>3PE</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=MWV:(1S,2S)-2-(2-{[3-(1H-benzimidazol-2-yl)propyl](methyl)amino}ethyl)-6-fluoro-1-(propan-2-yl)-1,2,3,4-tetrahydronaphthalen-2-yl+methoxyacetate'>MWV</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=Y01:CHOLESTEROL+HEMISUCCINATE'>Y01</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=7wlj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7wlj OCA], [https://pdbe.org/7wlj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7wlj RCSB], [https://www.ebi.ac.uk/pdbsum/7wlj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7wlj ProSAT]</span></td></tr>
	</table>		</table>
		+	== Function ==
		+	[[https://www.uniprot.org/uniprot/CAC1I_HUMAN CAC1I_HUMAN]] Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. This channel gives rise to T-type calcium currents. T-type calcium channels belong to the 'low-voltage activated (LVA)' group and are strongly blocked by nickel and mibefradil. A particularity of this type of channels is an opening at quite negative potentials, and a voltage-dependent inactivation. T-type channels serve pacemaking functions in both central neurons and cardiac nodal cells and support calcium signaling in secretory cells and vascular smooth muscle. They may also be involved in the modulation of firing patterns of neurons which is important for information processing as well as in cell growth processes. Gates in voltage ranges similar to, but higher than alpha 1G or alpha 1H (By similarity).
		+	<div style="background-color:#fffaf0;">
		+	== Publication Abstract from PubMed ==
		+	The low-voltage activated T-type calcium channels regulate cellular excitability and oscillatory behavior of resting membrane potential which trigger many physiological events and have been implicated with many diseases. Here, we determine structures of the human T-type CaV3.3 channel, in the absence and presence of antihypertensive drug mibefradil, antispasmodic drug otilonium bromide and antipsychotic drug pimozide. CaV3.3 contains a long bended S6 helix from domain III, with a positive charged region protruding into the cytosol, which is critical for T-type CaV channel activation at low voltage. The drug-bound structures clearly illustrate how these structurally different compounds bind to the same central cavity inside the CaV3.3 channel, but are mediated by significantly distinct interactions between drugs and their surrounding residues. Phospholipid molecules penetrate into the central cavity in various extent to shape the binding pocket and play important roles in stabilizing the inhibitor. These structures elucidate mechanisms of channel gating, drug recognition, and actions, thus pointing the way to developing potent and subtype-specific drug for therapeutic treatments of related disorders.
		+
		+	Structure, gating, and pharmacology of human CaV3.3 channel.,He L, Yu Z, Geng Z, Huang Z, Zhang C, Dong Y, Gao Y, Wang Y, Chen Q, Sun L, Ma X, Huang B, Wang X, Zhao Y Nat Commun. 2022 Apr 19;13(1):2084. doi: 10.1038/s41467-022-29728-0. PMID:35440630<ref>PMID:35440630</ref>
		+
		+	From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
		+	</div>
		+	<div class="pdbe-citations 7wlj" style="background-color:#fffaf0;"></div>
		+	== References ==
		+	<references/>
	__TOC__		__TOC__
	</StructureSection>		</StructureSection>
	[[Category: Large Structures]]		[[Category: Large Structures]]
-	[[Category: Chen Q]]	+	[[Category: Chen, Q]]
-	[[Category: Dong Y]]	+	[[Category: Dong, Y]]
-	[[Category: He L]]	+	[[Category: He, L]]
-	[[Category: Yu Z]]	+	[[Category: Yu, Z]]
-	[[Category: Zhao Y]]	+	[[Category: Zhao, Y]]
		+	[[Category: Membrane protein]]
		+	[[Category: Mib]]

OCA at 12:54, 4 May 2022

OCA — Wed, 04 May 2022 12:54:48 GMT

←Older revision		Revision as of 12:54, 4 May 2022
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-	'''Unreleased structure'''

-	~~The entry~~ 7wlj is ~~ON HOLD until Paper Publication~~	+	==CryoEM structure of human low-voltage activated T-type calcium channel Cav3.3 in complex with mibefradil (MIB)==
-		+	<StructureSection load='7wlj' size='340' side='right'caption='[[7wlj]]' scene=''>
-	~~Authors~~:	+	== Structural highlights ==
-		+	<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7WLJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7WLJ FirstGlance]. <br>
-	~~Description~~:	+	</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=7wlj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7wlj OCA], [https://pdbe.org/7wlj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7wlj RCSB], [https://www.ebi.ac.uk/pdbsum/7wlj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7wlj ProSAT]</span></td></tr>
-	[[Category: ~~Unreleased Structures~~]]	+	</table>
		+	__TOC__
		+	</StructureSection>
		+	[[Category: Large Structures]]
		+	[[Category: Chen Q]]
		+	[[Category: Dong Y]]
		+	[[Category: He L]]
		+	[[Category: Yu Z]]
		+	[[Category: Zhao Y]]

OCA at 10:29, 27 April 2022

OCA — Wed, 27 Apr 2022 10:29:16 GMT

←Older revision		Revision as of 10:29, 27 April 2022
Line 1:		Line 1:
	'''Unreleased structure'''		'''Unreleased structure'''

-	The entry 7wlj is ON HOLD	+	The entry 7wlj is ON HOLD until Paper Publication

	Authors:		Authors:

OCA: Protected "7wlj" [edit=sysop:move=sysop]

OCA — Wed, 19 Jan 2022 06:12:59 GMT

Protected "7wlj" [edit=sysop:move=sysop]

←Older revision

Revision as of 06:12, 19 January 2022

OCA: New page: '''Unreleased structure''' The entry 7wlj is ON HOLD Authors: Description: Category: Unreleased Structures

OCA — Wed, 19 Jan 2022 06:12:58 GMT

New page: '''Unreleased structure''' The entry 7wlj is ON HOLD Authors: Description: Category: Unreleased Structures

New page

'''Unreleased structure'''

The entry 7wlj is ON HOLD

Authors:

Description:
[[Category: Unreleased Structures]]

7wlj - Revision history

OCA at 08:19, 25 May 2022

OCA at 12:54, 4 May 2022

OCA at 10:29, 27 April 2022

OCA: Protected "7wlj" [edit=sysop:move=sysop]

OCA: New page: '''Unreleased structure''' The entry 7wlj is ON HOLD Authors: Description: Category: Unreleased Structures