1lnq: Difference between revisions

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<StructureSection load='1lnq' size='340' side='right'caption='[[1lnq]], [[Resolution|resolution]] 3.30&Aring;' scene=''>
<StructureSection load='1lnq' size='340' side='right'caption='[[1lnq]], [[Resolution|resolution]] 3.30&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1lnq]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/"methanobacterium_thermoautotrophicus"_(sic)_zeikus_and_wolfe_1972 "methanobacterium thermoautotrophicus" (sic) zeikus and wolfe 1972]. The February 2003 RCSB PDB [http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Potassium Channels''  by Shuchismita Dutta and David S. Goodsell is [http://dx.doi.org/10.2210/rcsb_pdb/mom_2003_2 10.2210/rcsb_pdb/mom_2003_2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LNQ OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1LNQ FirstGlance]. <br>
<table><tr><td colspan='2'>[[1lnq]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Methanothermobacter_thermautotrophicus Methanothermobacter thermautotrophicus]. The February 2003 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Potassium Channels''  by Shuchismita Dutta and David S. Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2003_2 10.2210/rcsb_pdb/mom_2003_2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LNQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1LNQ FirstGlance]. <br>
</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></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]] 3.3&#8491;</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">mth1520 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=145262 "Methanobacterium thermoautotrophicus" (sic) Zeikus and Wolfe 1972])</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></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1lnq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1lnq OCA], [http://pdbe.org/1lnq PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1lnq RCSB], [http://www.ebi.ac.uk/pdbsum/1lnq PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1lnq ProSAT]</span></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=1lnq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1lnq OCA], [https://pdbe.org/1lnq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1lnq RCSB], [https://www.ebi.ac.uk/pdbsum/1lnq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1lnq ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/MTHK_METTH MTHK_METTH]] Calcium-gated potassium channel.  
[https://www.uniprot.org/uniprot/MTHK_METTH MTHK_METTH] Calcium-gated potassium channel.
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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</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=1lnq 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=1lnq ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Ion channels exhibit two essential biophysical properties; that is, selective ion conduction, and the ability to gate-open in response to an appropriate stimulus. Two general categories of ion channel gating are defined by the initiating stimulus: ligand binding (neurotransmitter- or second-messenger-gated channels) or membrane voltage (voltage-gated channels). Here we present the structural basis of ligand gating in a K(+) channel that opens in response to intracellular Ca(2+). We have cloned, expressed, analysed electrical properties, and determined the crystal structure of a K(+) channel (MthK) from Methanobacterium thermoautotrophicum in the Ca(2+)-bound, opened state. Eight RCK domains (regulators of K(+) conductance) form a gating ring at the intracellular membrane surface. The gating ring uses the free energy of Ca(2+) binding in a simple manner to perform mechanical work to open the pore.
Crystal structure and mechanism of a calcium-gated potassium channel.,Jiang Y, Lee A, Chen J, Cadene M, Chait BT, MacKinnon R Nature. 2002 May 30;417(6888):515-22. PMID:12037559<ref>PMID:12037559</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1lnq" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Potassium channel 3D structures|Potassium channel 3D structures]]
*[[Potassium channel 3D structures|Potassium channel 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Methanothermobacter thermautotrophicus]]
[[Category: Potassium Channels]]
[[Category: Potassium Channels]]
[[Category: RCSB PDB Molecule of the Month]]
[[Category: RCSB PDB Molecule of the Month]]
[[Category: Cadene, M]]
[[Category: Cadene M]]
[[Category: Chait, B T]]
[[Category: Chait BT]]
[[Category: Chen, J]]
[[Category: Chen J]]
[[Category: Jiang, Y]]
[[Category: Jiang Y]]
[[Category: Lee, A]]
[[Category: Lee A]]
[[Category: Mackinnon, R]]
[[Category: Mackinnon R]]
[[Category: Helix bundle]]
[[Category: Membrane protein]]
[[Category: Metal transport]]
[[Category: Rossmann fold]]

Latest revision as of 10:34, 14 February 2024

CRYSTAL STRUCTURE OF MTHK AT 3.3 ACRYSTAL STRUCTURE OF MTHK AT 3.3 A

Structural highlights

1lnq is a 8 chain structure with sequence from Methanothermobacter thermautotrophicus. The February 2003 RCSB PDB Molecule of the Month feature on Potassium Channels by Shuchismita Dutta and David S. Goodsell is 10.2210/rcsb_pdb/mom_2003_2. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 3.3Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

MTHK_METTH Calcium-gated potassium channel.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

See Also

1lnq, resolution 3.30Å

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