1lnq: Difference between revisions

From Proteopedia
Jump to navigation Jump to search
← Older edit
No edit summary
No edit summary
 
(20 intermediate revisions by the same user not shown)
Line 1: Line 1:
[[Image:1lnq.gif|left|200px]]


{{Structure
==CRYSTAL STRUCTURE OF MTHK AT 3.3 A==
|PDB= 1lnq |SIZE=350|CAPTION= <scene name='initialview01'>1lnq</scene>, resolution 3.30&Aring;
<StructureSection load='1lnq' size='340' side='right'caption='[[1lnq]], [[Resolution|resolution]] 3.30&Aring;' scene=''>
|SITE=  
== Structural highlights ==
|LIGAND= <scene name='pdbligand=CA:CALCIUM ION'>CA</scene>
<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>
|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]] 3.3&#8491;</td></tr>
|GENE= mth1520 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=145262 Methanothermobacter thermautotrophicus])
<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'>[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>
== Function ==
[https://www.uniprot.org/uniprot/MTHK_METTH MTHK_METTH] Calcium-gated potassium channel.
== 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/ln/1lnq_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/main_output.php?pdb_ID=1lnq ConSurf].
<div style="clear:both"></div>


'''CRYSTAL STRUCTURE OF MTHK AT 3.3 A'''
==See Also==
 
*[[Potassium channel 3D structures|Potassium channel 3D structures]]
 
__TOC__
==Overview==
</StructureSection>
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.
[[Category: Large Structures]]
 
==About this Structure==
1LNQ is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Methanothermobacter_thermautotrophicus Methanothermobacter thermautotrophicus]. The following page contains interesting information on the relation of 1LNQ with [[http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/pdb38_1.html Potassium Channels]]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LNQ OCA].
 
==Reference==
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:[http://www.ncbi.nlm.nih.gov/pubmed/12037559 12037559]
[[Category: Methanothermobacter thermautotrophicus]]
[[Category: Methanothermobacter thermautotrophicus]]
[[Category: Potassium Channels]]
[[Category: Potassium Channels]]
[[Category: Single protein]]
[[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: CA]]
[[Category: helix bundle]]
[[Category: membrane protein]]
[[Category: rossman fold]]
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 12:32:56 2008''

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

Drag the structure with the mouse to rotate

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA
Retrieved from "https://proteopedia.openfox.io/wiki/index.php?title=1lnq&oldid=4050814"