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1s5h

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Potassium Channel Kcsa-Fab Complex T75C mutant in K+

Structural highlights

1s5h is a 3 chain structure with sequence from Mus musculus, Streptomyces coelicolor and Streptomyces lividans. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.2Å
Ligands:	, ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

KCSA_STRCO Acts as a potassium ion channel (By similarity).

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

The selectivity filter of K(+) channels is comprised of a linear queue of four equal-spaced ion-binding sites spanning a distance of 12A. Each site is formed of eight oxygen atoms from the protein. The first three sites, numbered 1-3 from the extracellular side, are made of exclusively main-chain carbonyl oxygen atoms. The fourth site, closest to the intracellular side, is made of four main-chain carbonyl oxygen atoms and four threonine side-chain hydroxyl oxygen atoms. Here we characterize the effects of mutating the threonine to cysteine on the distribution of ions in the selectivity filter and on the conduction of ions through the filter. The mutation influences the occupancy of K(+) at sites 2 and 4 and it reduces the maximum rate of conduction in the limit of high K(+) concentration. The mutation does not affect the conduction of Rb(+). These results can be understood in the context of a conduction mechanism in which a pair of K ions switch between energetically balanced 1,3 and 2,4 configurations.

A mutant KcsA K(+) channel with altered conduction properties and selectivity filter ion distribution.,Zhou M, MacKinnon R J Mol Biol. 2004 May 7;338(4):839-46. PMID:15099749^[1]

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

References

↑ Zhou M, MacKinnon R. A mutant KcsA K(+) channel with altered conduction properties and selectivity filter ion distribution. J Mol Biol. 2004 May 7;338(4):839-46. PMID:15099749 doi:10.1016/j.jmb.2004.03.020

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/1s5h"

@@ Line 1: / Line 1: @@
 ==Potassium Channel Kcsa-Fab Complex T75C mutant in K+==
-<StructureSection load='1s5h' size='340' side='right' caption='[[1s5h]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
+<StructureSection load='1s5h' size='340' side='right'caption='[[1s5h]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1s5h]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/"actinomyces_coelicolor"_(muller_1908)_lieske_1921 "actinomyces coelicolor" (muller 1908) lieske 1921] and [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1S5H OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1S5H FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1s5h]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus], [https://en.wikipedia.org/wiki/Streptomyces_coelicolor Streptomyces coelicolor] and [https://en.wikipedia.org/wiki/Streptomyces_lividans Streptomyces lividans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1S5H OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1S5H FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=DGA:DIACYL+GLYCEROL'>DGA</scene>, <scene name='pdbligand=F09:NONAN-1-OL'>F09</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</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]] 2.2&#8491;</td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">KCSA, SKC1, SCO7660, SC10F4.33 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1902 "Actinomyces coelicolor" (Muller 1908) Lieske 1921])</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=DGA:DIACYL+GLYCEROL'>DGA</scene>, <scene name='pdbligand=F09:NONAN-1-OL'>F09</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene></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=1s5h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1s5h OCA], [http://pdbe.org/1s5h PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1s5h RCSB], [http://www.ebi.ac.uk/pdbsum/1s5h PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1s5h 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=1s5h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1s5h OCA], [https://pdbe.org/1s5h PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1s5h RCSB], [https://www.ebi.ac.uk/pdbsum/1s5h PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1s5h ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/KCSA_STRCO KCSA_STRCO]] Acts as a potassium ion channel (By similarity).
+[https://www.uniprot.org/uniprot/KCSA_STRCO KCSA_STRCO] Acts as a potassium ion channel (By similarity).
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 32: / Line 32: @@
 ==See Also==
 *[[Antibody 3D structures|Antibody 3D structures]]
-*[[Potassium Channel|Potassium Channel]]
+*[[Potassium channel 3D structures|Potassium channel 3D structures]]
+*[[3D structures of non-human antibody|3D structures of non-human antibody]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
+[[Category: Large Structures]]
 [[Category: Mus musculus]]
-[[Category: Mackinnon, R]]
+[[Category: Streptomyces coelicolor]]
-[[Category: Zhou, M]]
+[[Category: Streptomyces lividans]]
-[[Category: Ion occupancy]]
+[[Category: Mackinnon R]]
-[[Category: K+ channel]]
+[[Category: Zhou M]]
-[[Category: Membrane protein]]
-[[Category: Protein-antibody fab complex]]
-[[Category: Selectivity filter]]

1s5h

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Current revision

Potassium Channel Kcsa-Fab Complex T75C mutant in K+

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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