Calpain

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== Structural highlights ==
== Structural highlights ==
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CAP is a heterodimer containing a small 28kDa regulatory subunit which is identical for all CAPs and a large 80kDa catalytic subunit. CAP undergoes conformational change upon binding of Ca+2 ions resulting in closing of its active site cleft and activation as a cysteine protease.
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CAP is a heterodimer containing a small 28kDa regulatory subunit which is identical for all CAPs and a large 80kDa catalytic subunit. CAP undergoes conformational change upon binding of Ca+2 ions resulting in closing of its active site cleft and activation as a cysteine protease. <ref>PMID:11893336</ref>
*<scene name='51/517369/Cv/3'>1st Ca+2 binding site</scene>.
*<scene name='51/517369/Cv/3'>1st Ca+2 binding site</scene>.
*<scene name='51/517369/Cv/2'>2nd Ca+2 binding site</scene>.<ref>PMID:16411745</ref>
*<scene name='51/517369/Cv/2'>2nd Ca+2 binding site</scene>.<ref>PMID:16411745</ref>

Revision as of 13:31, 18 November 2015

Human calpain1 large subunit complex with inhibitor and Ca+2 ions (green) (PDB entry 1zcm)

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3D structures of calpain

Updated on 18-November-2015

References

  1. Moldoveanu T, Hosfield CM, Lim D, Elce JS, Jia Z, Davies PL. A Ca(2+) switch aligns the active site of calpain. Cell. 2002 Mar 8;108(5):649-60. PMID:11893336
  2. Li Q, Hanzlik RP, Weaver RF, Schonbrunn E. Molecular mode of action of a covalently inhibiting peptidomimetic on the human calpain protease core. Biochemistry. 2006 Jan 24;45(3):701-8. PMID:16411745 doi:http://dx.doi.org/10.1021/bi052077b

Proteopedia Page Contributors and Editors (what is this?)

Michal Harel, Alexander Berchansky

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