3mz8

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m (Protected "3mz8" [edit=sysop:move=sysop])
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[[Image:3mz8.png|left|200px]]
 
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{{STRUCTURE_3mz8| PDB=3mz8 | SCENE= }}
{{STRUCTURE_3mz8| PDB=3mz8 | SCENE= }}
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===Crystal Structure of Zinc-Bound Natrin From Naja atra===
===Crystal Structure of Zinc-Bound Natrin From Naja atra===
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{{ABSTRACT_PUBMED_20889969}}
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==Function==
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[[http://www.uniprot.org/uniprot/CRVP1_NAJAT CRVP1_NAJAT]] Inhibits calcium-activated potassium channels (KCa1.1/KCNMA1), voltage-gated potassium channel Kv1.3/KCNA3, and the calcium release channel/ryanodine receptor (RyR). Binds specifically to type 1 RyR (RyR1) from skeletal muscle. Inhibit both the binding of ryanodine to RyR1, and RyR1's calcium-channel activity. Inhibits carbachol-induced muscle contraction and weakly blocks muscle contraction evoked by potassium.<ref>PMID:15581679</ref> <ref>PMID:17070778</ref> <ref>PMID:18658224</ref> <ref>PMID:16042391</ref>
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{{ABSTRACT_PUBMED_20889969}}
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==About this Structure==
==About this Structure==
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==Reference==
==Reference==
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<ref group="xtra">PMID:20889969</ref><ref group="xtra">PMID:15388950</ref><references group="xtra"/>
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<ref group="xtra">PMID:020889969</ref><ref group="xtra">PMID:015388950</ref><references group="xtra"/><references/>
[[Category: Naja atra]]
[[Category: Naja atra]]
[[Category: Chen, C J.]]
[[Category: Chen, C J.]]

Revision as of 21:01, 17 April 2013

Template:STRUCTURE 3mz8

Contents

Crystal Structure of Zinc-Bound Natrin From Naja atra

Template:ABSTRACT PUBMED 20889969

Function

[CRVP1_NAJAT] Inhibits calcium-activated potassium channels (KCa1.1/KCNMA1), voltage-gated potassium channel Kv1.3/KCNA3, and the calcium release channel/ryanodine receptor (RyR). Binds specifically to type 1 RyR (RyR1) from skeletal muscle. Inhibit both the binding of ryanodine to RyR1, and RyR1's calcium-channel activity. Inhibits carbachol-induced muscle contraction and weakly blocks muscle contraction evoked by potassium.[1] [2] [3] [4]

About this Structure

3mz8 is a 2 chain structure with sequence from Naja atra. Full crystallographic information is available from OCA.

Reference

  • Wang YL, Kuo JH, Lee SC, Liu JS, Hsieh YC, Shih YT, Chen CJ, Chiu JJ, Wu WG. Cobra CRISP functions as an inflammatory modulator via a novel Zn2+- and heparan sulfate- dependent transcriptional regulation of endothelial cell adhesion molecules. J Biol Chem. 2010 Oct 2. PMID:20889969 doi:10.1074/jbc.M110.146290
  • Wang YL, Goh KX, Wu WG, Chen CJ. Purification, crystallization and preliminary X-ray crystallographic analysis of a cysteine-rich secretory protein (CRISP) from Naja atra venom. Acta Crystallogr D Biol Crystallogr. 2004 Oct;60(Pt 10):1912-5. Epub 2004, Sep 23. PMID:15388950 doi:10.1107/S0907444904019766
  1. ↑ Chang LS, Liou JC, Lin SR, Cheng YC. Purification and characterization of Taiwan cobra venom proteins with weak toxicity. Toxicon. 2005 Jan;45(1):21-5. PMID:15581679 doi:10.1016/j.toxicon.2004.09.002
  2. ↑ Wang F, Li H, Liu MN, Song H, Han HM, Wang QL, Yin CC, Zhou YC, Qi Z, Shu YY, Lin ZJ, Jiang T. Structural and functional analysis of natrin, a venom protein that targets various ion channels. Biochem Biophys Res Commun. 2006 Dec 15;351(2):443-8. Epub 2006 Oct 20. PMID:17070778 doi:10.1016/j.bbrc.2006.10.067
  3. ↑ Zhou Q, Wang QL, Meng X, Shu Y, Jiang T, Wagenknecht T, Yin CC, Sui SF, Liu Z. Structural and functional characterization of ryanodine receptor-natrin toxin interaction. Biophys J. 2008 Nov 1;95(9):4289-99. doi: 10.1529/biophysj.108.137224. Epub 2008 , Jul 25. PMID:18658224 doi:10.1529/biophysj.108.137224
  4. ↑ Wang J, Shen B, Guo M, Lou X, Duan Y, Cheng XP, Teng M, Niu L, Liu Q, Huang Q, Hao Q. Blocking effect and crystal structure of natrin toxin, a cysteine-rich secretory protein from Naja atra venom that targets the BKCa channel. Biochemistry. 2005 Aug 2;44(30):10145-52. PMID:16042391 doi:10.1021/bi050614m

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