Troponin
From Proteopedia
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{{STRUCTURE_1yv0| PDB=1yv0 | SIZE=400| SCENE=Troponin/Cv/1 |right|CAPTION=Chicken troponin: subunit T (dark green), subunit I (wheat), subunit C (pink) complex with Mg+2 ion (green) [[1yv0]] }} | {{STRUCTURE_1yv0| PDB=1yv0 | SIZE=400| SCENE=Troponin/Cv/1 |right|CAPTION=Chicken troponin: subunit T (dark green), subunit I (wheat), subunit C (pink) complex with Mg+2 ion (green) [[1yv0]] }} | ||
| - | + | [[Troponin]] (Tn) is a regulatory protein in muscle contraction. It contains 3 subunits:<br /> | |
| - | + | * '''TnC''' causes conformational change in TnI when it binds to calcium ions. For more details on TnC see [[ Role of Troponin C in decreased muscle sensitivity to calcium]].<br /> | |
| - | + | * '''TnT''' binds to [[Tropomyosin|tropomyosin]].<br /> | |
| - | + | * '''TnI''' binds to actin which is found in thin muscle filaments.<br /> | |
| - | + | See additional details in [[Human Cardiac Troponin C]]. | |
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| - | [[Troponin]] (Tn) is a regulatory protein in muscle contraction. It contains 3 subunits: TnC causes conformational change in TnI when it binds to calcium ions. For more details on TnC see [[ Role of Troponin C in decreased muscle sensitivity to calcium]]. | + | |
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== 3D Structures of Troponin == | == 3D Structures of Troponin == | ||
Revision as of 08:22, 21 August 2014
Troponin (Tn) is a regulatory protein in muscle contraction. It contains 3 subunits:
- TnC causes conformational change in TnI when it binds to calcium ions. For more details on TnC see Role of Troponin C in decreased muscle sensitivity to calcium.
- TnT binds to tropomyosin.
- TnI binds to actin which is found in thin muscle filaments.
See additional details in Human Cardiac Troponin C.
Contents |
3D Structures of Troponin
Updated on 21-August-2014
Troponin C+Troponin I+Troponin T
2w49, 2w4u – cTnC+cTnI+cTnT+tropomyosin+actin – chicken
1ytz - cTnC+cTnI+cTnT+Ca++
1yv0 - cTnC+cTnI+cTnT
1j1d, 1j1e – hTnC (mutant)+hTnI (mutant) fragment+hTnT fragment+Ca++ - human
Troponin C+Troponin I
2krd, 2mkp – hTnC+hTnI – NMR
1ozs - hTnC C-terminal+hTnI N-terminal – NMR
2l1r - hTnC C-terminal+hTnI switch region - NMR
1lxf, 1mxl - hTnC N-terminal+hTnI fragment
2kgb – hTnC (mutant) regulatory domain+TnI
1sbj – cTnC C-terminal+cTnI N-terminal+Mg++ - NMR
1scv, 1fi5, 1blq - cTnC C-terminal+cTnI N-terminal – NMR
1npq - cTnC (mutant) N-terminal+cTnI fragment+rhodamine
1jc2 - cTnC C-terminal+cTnI N-terminal
1a2x - rTnC +rTnI fragment – rabbit
3tz1 - TnC C terminal +TnI fragment – akazara scallop
Troponin C
2kdh – hTnC+green tea polyphenol – NMR
2kfx – hTnC (mutant) N-terminal+Ca+naphthalene derivative
2jt0, 2jtz, 2jt8, 2jt3 – hTnC (mutant) – NMR
2jxl - hTnC (mutant) N-terminal – NMR
3rv5, 3sd6, 3swb - hTnC N-terminal
4gjg - hTnC N-terminal (mutant)
4gjf - hTnC N-terminal (mutant) + Cd
4gje - hTnC N-terminal + Cd
1wrk, 1wrl - hTnC (mutant) N-terminal+trifluoperazine
1spy - hTnC N-terminal – NMR
2mle - hTnC C-terminal – NMR
2mlf - hTnC C-terminal (mutant) – NMR
1ih0 - hTnC C-terminal+EMD 57033 – NMR
1ap4 - hTnC N-terminal+Ca++ – NMR
2l98 – hTnC EF-hand domains 3,4 + resveratrol
1la0, 4tnc – cTnC+Ca++
1dtl – cTnC (mutant)+Ca++ +bepridil
1skt, 1zac, 2ctn - cTnC N-terminal – NMR
1aj4 - cTnC (mutant) +Ca++ – NMR
3ctn - cTnC C-terminal – NMR
1avs - cTnC N-terminal+Ca++
1smg, 1tnq - cTnC N-terminal+Ca++ - NMR
1ncy – cTnC+Mn++
1ncx, 1ncz, 1top – cTnC
1pon, 1cta, 1ctd – cTnC fragment – NMR
1tnp - cTnC N-terminal – NMR
1tnw, 1tnx - cTnC +Ca++ - NMR
1trf - tTnC N-terminal+Ca++ - turkey – NMR
5tnc - tTnC
2k2a - TnC C-terminal – Lethocerus indicus – NMR
2jnf – TnC – fly – NMR
1r2u, 1r6p - TnC N-terminal – trout – NMR
1tcf – rTnC+Ca++
1tn4, 2tn4 – rTnC (mutant)+Ca++
Troponin I
2jpw – TnI biphosphorylated – mouse – NMR
1vdi – cTnI – NMR
1vdj – cTnI+Ca++ - NMR
Troponin T
2z5h – yTnT fragment+tropomyosin – yeast
