Troponin: Difference between revisions

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<StructureSection load='1yv0' size='350' side='right' caption='Chicken troponin: subunit T (dark green), subunit I (wheat), subunit C (pink) complex with Mg+2 ion (green) [[1yv0]]' scene=''>
<StructureSection load='1yv0' size='350' side='right' caption='Chicken troponin: subunit T (dark green), subunit I (wheat), subunit C (pink) complex with Mg+2 ion (green) [[1yv0]]' scene=''>
__TOC__
== Function ==
== Function ==
[[Troponin]] (Tn) is a regulatory protein in muscle contraction.  It contains 3 subunits:<br />
[[Troponin]] (Tn) is a regulatory protein in muscle contraction.  It contains 3 subunits:<br />
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[[Human Cardiac Troponin C in complex with the Green Tea Polyphenol]]<br />
[[Human Cardiac Troponin C in complex with the Green Tea Polyphenol]]<br />
* '''TnT''' binds to [[Tropomyosin|tropomyosin]].<br />
* '''TnT''' binds to [[Tropomyosin|tropomyosin]].<br />
* '''TnI''' binds to actin which is found in thin muscle filaments.<br />
* '''TnI''' binds to actin which is found in thin muscle filaments. See [[Human Cardiac Troponin I]]<br />


== Disease ==
== Disease ==
Mutations in TnI<ref>PMID:9241277</ref> and TnT <ref>PMID:11606294</ref>are associated with hypertrophic cardiomyopathy.
Mutations in TnI<ref>PMID:9241277</ref> and TnT <ref>PMID:11606294</ref>are associated with hypertrophic cardiomyopathy.
</StructureSection>
 
== 3D Structures of Troponin ==
== 3D Structures of Troponin ==


Updated on {{REVISIONDAY2}}-{{MONTHNAME|{{REVISIONMONTH}}}}-{{REVISIONYEAR}}
[[Troponin 3D structures]]
{{#tree:id=OrganizedByTopic|openlevels=0|


* Troponin C+Troponin I+Troponin T
</StructureSection>
 
**[[1j1d]], [[1j1e]], [[4y99]] – hTnC (mutant)+hTnI (mutant) fragment+hTnT fragment+Ca - human<br />
**[[6kn8]], [[6kn7]] - hTnC + hTnI + hTnT + actin + tropomyosin – Cryo EM<br />
**[[6klu]], [[6klt]] - mTnC + TnI + TnT – mouse - Cryo EM<br />
**[[2w49]], [[2w4u]] – cTnC+cTnI+cTnT+tropomyosin+actin – chicken<br />
**[[1ytz]] - cTnC+cTnI+cTnT+Ca<br />
**[[1yv0]] - cTnC+cTnI+cTnT<br />
 
* Troponin C+Troponin I
 
**[[2krd]], [[2mkp]] – hTnC+hTnI  + Ca – NMR<br />
**[[6mv3]] – hTnC/hTnI (mutant) – NMR<br />
**[[1ozs]] - hTnC C-terminal+hTnI N-terminal – NMR<br />
**[[2l1r]] - hTnC C-terminal+hTnI switch region - NMR<br />
**[[1lxf]], [[1mxl]] - hTnC N-terminal+hTnI fragment - NMR<br />
**[[2n7l]] - hTnC N-terminal/hTnC switch + drug analog – NMR<br />
**[[2kgb]] – hTnC (mutant) regulatory domain+TnI - NMR<br />
**[[2mzp]] - hTnC regulatory domain+TnI switch region (mutant) - NMR<br />
**[[1a2x]] - rTnC +rTnI fragment – rabbit<br />
**[[1sbj]] – cTnC C-terminal+cTnI N-terminal+Mg - NMR<br />
**[[1scv]], [[1fi5]], [[1blq]] - cTnC C-terminal+cTnI N-terminal – NMR<br />
**[[1npq]] - cTnC (mutant) N-terminal+cTnI  fragment+rhodamine<br />
**[[1jc2]] - cTnC C-terminal+cTnI N-terminal<br />
**[[3tz1]] - TnC C terminal +TnI fragment – akazara scallop<br />
 
* Troponin C
 
**[[2kdh]] – hTnC+green tea polyphenol – NMR<br />
**[[2jt0]], [[2jtz]], [[2jt8]], [[2jt3]] – hTnC (mutant) – NMR<br />
**[[3rv5]], [[3sd6]], [[3swb]], [[4gje]], [[1spy]] - hTnC N-terminal<br />
**[[4gjg]], [[5vln]] - hTnC N-terminal (mutant)<br />
**[[1ap4]] - hTnC N-terminal+Ca – NMR<br />
**[[2jxl]], [[2n79]] - hTnC N-terminal (mutant) + Ca – NMR<br />
**[[4gjf]] - hTnC N-terminal (mutant) + Cd<br />
**[[1wrk]], [[1wrl]] - hTnC N-terminal (mutant) +trifluoperazine<br />
**[[5w88]], [[5wcl]] - hTnC N-terminal (mutant) + methyldiphenylamine - NMR<br />
**[[2kfx]] – hTnC (mutant) N-terminal+Ca+naphthalene derivative<br />
**[[2mle]] - hTnC  C-terminal – NMR<br />
**[[2mlf]] - hTnC  C-terminal (mutant) – NMR<br />
**[[1ih0]] - hTnC C-terminal+EMD 57033 – NMR<br />
**[[2l98]] – hTnC EF-hand domains 3,4 + resveratrol<br />
**[[1tcf]] – rTnC+Ca<br />
**[[1tn4]], [[2tn4]] – rTnC (mutant)+Ca<br />
**[[1la0]], [[4tnc]] – cTnC+Ca<br />
**[[1dtl]] – cTnC (mutant)+Ca +bepridil<br />
**[[1skt]], [[1zac]], [[2ctn]] - cTnC N-terminal – NMR<br />
**[[1aj4]] - cTnC (mutant) +Ca – NMR<br />
**[[3ctn]] - cTnC C-terminal – NMR<br />
**[[1avs]] - cTnC N-terminal+Ca<br />
**[[1smg]], [[1tnq]] - cTnC N-terminal+Ca - NMR<br />
**[[1ncy]] – cTnC+Mn<br />
**[[1ncx]], [[1ncz]], [[1top]] – cTnC<br />
**[[1pon]], [[1cta]], [[1ctd]] – cTnC fragment – NMR<br />
**[[1tnp]] - cTnC N-terminal – NMR<br />
**[[1tnw]], [[1tnx]] - cTnC +Ca - NMR<br />
**[[1trf]] - tTnC N-terminal+Ca - turkey – NMR<br />
**[[5tnc]] - tTnC<br />
**[[2k2a]] - TnC  C-terminal – ''Lethocerus indicus'' – NMR<br />
**[[2jnf]] – TnC – fly – NMR<br />
**[[1r2u]], [[1r6p]] - TnC  N-terminal – trout – NMR<br />
 
* Troponin I
 
**[[2jpw]] – mTnI biphosphorylated – NMR<br />
**[[1vdi]] – cTnI – NMR<br />
**[[1vdj]] – cTnI+Ca - NMR
 
* Troponin T


**[[2z5h]] – yTnT fragment+tropomyosin – yeast
}}
== References ==
== References ==
<references/>
<references/>
[[Category:Topic Page]]
[[Category:Topic Page]]

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

Alexander Berchansky, Michal Harel, Joel L. Sussman