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2nz0

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[[Image:2nz0.png|left|200px]]
 
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{{STRUCTURE_2nz0| PDB=2nz0 | SCENE= }}
{{STRUCTURE_2nz0| PDB=2nz0 | SCENE= }}
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===Crystal structure of potassium channel Kv4.3 in complex with its regulatory subunit KChIP1 (CASP Target)===
===Crystal structure of potassium channel Kv4.3 in complex with its regulatory subunit KChIP1 (CASP Target)===
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{{ABSTRACT_PUBMED_17187064}}
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{{ABSTRACT_PUBMED_17187064}}
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==Disease==
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[[http://www.uniprot.org/uniprot/KCND3_HUMAN KCND3_HUMAN]] Note=KCND3 rare variants may confer risk for lethal ventricular arrhytmias and be associated with autopsy-negative sudden unexplained death syndrome (SUDS).<ref>PMID:22457051</ref>
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==Function==
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[[http://www.uniprot.org/uniprot/KCIP1_HUMAN KCIP1_HUMAN]] Regulatory subunit of Kv4/D (Shal)-type voltage-gated rapidly inactivating A-type potassium channels. Probably modulates channels density, inactivation kinetics and rate of recovery from inactivation in a calcium-dependent and isoform-specific manner. In vitro, modulates KCND1/Kv4.1 and KCND2/Kv4.2 currents. Seems to be involved in KCND2 trafficking to the cell surface.<ref>PMID:10676964</ref><ref>PMID:11423117</ref><ref>PMID:12829703</ref> [[http://www.uniprot.org/uniprot/KCND3_HUMAN KCND3_HUMAN]] Pore-forming (alpha) subunit of voltage-gated rapidly inactivating A-type potassium channels. May contribute to I(To) current in heart and I(Sa) current in neurons. Channel properties are modulated by interactions with other alpha subunits and with regulatory subunits.<ref>PMID:9843794</ref><ref>PMID:10200233</ref>
==About this Structure==
==About this Structure==
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==Reference==
==Reference==
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<ref group="xtra">PMID:017187064</ref><references group="xtra"/>
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<ref group="xtra">PMID:017187064</ref><references group="xtra"/><references/>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Chen, L.]]
[[Category: Chen, L.]]

Revision as of 01:12, 25 March 2013

Template:STRUCTURE 2nz0

Contents

Crystal structure of potassium channel Kv4.3 in complex with its regulatory subunit KChIP1 (CASP Target)

Template:ABSTRACT PUBMED 17187064

Disease

[KCND3_HUMAN] Note=KCND3 rare variants may confer risk for lethal ventricular arrhytmias and be associated with autopsy-negative sudden unexplained death syndrome (SUDS).[1]

Function

[KCIP1_HUMAN] Regulatory subunit of Kv4/D (Shal)-type voltage-gated rapidly inactivating A-type potassium channels. Probably modulates channels density, inactivation kinetics and rate of recovery from inactivation in a calcium-dependent and isoform-specific manner. In vitro, modulates KCND1/Kv4.1 and KCND2/Kv4.2 currents. Seems to be involved in KCND2 trafficking to the cell surface.[2][3][4] [KCND3_HUMAN] Pore-forming (alpha) subunit of voltage-gated rapidly inactivating A-type potassium channels. May contribute to I(To) current in heart and I(Sa) current in neurons. Channel properties are modulated by interactions with other alpha subunits and with regulatory subunits.[5][6]

About this Structure

2nz0 is a 4 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA.

See Also

Reference

  • Wang H, Yan Y, Liu Q, Huang Y, Shen Y, Chen L, Chen Y, Yang Q, Hao Q, Wang K, Chai J. Structural basis for modulation of Kv4 K+ channels by auxiliary KChIP subunits. Nat Neurosci. 2007 Jan;10(1):32-9. Epub 2006 Dec 24. PMID:17187064 doi:10.1038/nn1822
  1. ↑ Giudicessi JR, Ye D, Kritzberger CJ, Nesterenko VV, Tester DJ, Antzelevitch C, Ackerman MJ. Novel mutations in the KCND3-encoded Kv4.3 K+ channel associated with autopsy-negative sudden unexplained death. Hum Mutat. 2012 Jun;33(6):989-97. doi: 10.1002/humu.22058. Epub 2012 Mar 27. PMID:22457051 doi:10.1002/humu.22058
  2. ↑ An WF, Bowlby MR, Betty M, Cao J, Ling HP, Mendoza G, Hinson JW, Mattsson KI, Strassle BW, Trimmer JS, Rhodes KJ. Modulation of A-type potassium channels by a family of calcium sensors. Nature. 2000 Feb 3;403(6769):553-6. PMID:10676964 doi:10.1038/35000592
  3. ↑ Nakamura TY, Nandi S, Pountney DJ, Artman M, Rudy B, Coetzee WA. Different effects of the Ca(2+)-binding protein, KChIP1, on two Kv4 subfamily members, Kv4.1 and Kv4.2. FEBS Lett. 2001 Jun 22;499(3):205-9. PMID:11423117
  4. ↑ Shibata R, Misonou H, Campomanes CR, Anderson AE, Schrader LA, Doliveira LC, Carroll KI, Sweatt JD, Rhodes KJ, Trimmer JS. A fundamental role for KChIPs in determining the molecular properties and trafficking of Kv4.2 potassium channels. J Biol Chem. 2003 Sep 19;278(38):36445-54. Epub 2003 Jun 26. PMID:12829703 doi:10.1074/jbc.M306142200
  5. ↑ Kong W, Po S, Yamagishi T, Ashen MD, Stetten G, Tomaselli GF. Isolation and characterization of the human gene encoding Ito: further diversity by alternative mRNA splicing. Am J Physiol. 1998 Dec;275(6 Pt 2):H1963-70. PMID:9843794
  6. ↑ Dilks D, Ling HP, Cockett M, Sokol P, Numann R. Cloning and expression of the human kv4.3 potassium channel. J Neurophysiol. 1999 Apr;81(4):1974-7. PMID:10200233

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