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Protein Structures and Oligomeric States

Enter a protein name, UniProt accession or PDB ID. Name searches ask you to confirm the protein identity before related structures are queried.

Current Protein Identity：P12620 New Search
5PDB entries
7Biological assembly
13chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics

Difference tags compare only the current result set; every original PDB and assembly record remains separate.

Related-Structure Differences

Each row represents one biological assembly in one PDB entry; multiple monomers of the same protein are listed separately.

PDB Entry Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Experimental Method Experimental Conditions Structure Quality
1YTZ Crystal structure of skeletal muscle troponin in the Ca2+-activated state Deposited 2005-02-11 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain T 156–262（107 aa）
Not recorded DR6 ALPHA-[4-(1,1,3,3 - TETRAMETHYLBUTYL)PHENYL]-OMEGA-HYDROXY-POLY(OXY-1,2-ETHANEDIYL) × 3 CA CALCIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8；298 K；0.4 M NaH2PO4/1.6 M K2HPO4, 200 mM NaCl, 0.1 M immidazole, pH 8.0, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.00 Å R-free 0.338
1YTZ Crystal structure of skeletal muscle troponin in the Ca2+-activated state Deposited 2005-02-11 Assembly 2 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain T 156–262（107 aa）
Not recorded DR6 ALPHA-[4-(1,1,3,3 - TETRAMETHYLBUTYL)PHENYL]-OMEGA-HYDROXY-POLY(OXY-1,2-ETHANEDIYL) × 6 CA CALCIUM ION × 8 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8；298 K；0.4 M NaH2PO4/1.6 M K2HPO4, 200 mM NaCl, 0.1 M immidazole, pH 8.0, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 3.00 Å R-free 0.338
1YV0 Crystal structure of skeletal muscle troponin in the Ca2+-free state Deposited 2005-02-14 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain T 156–262（107 aa）
Not recorded MG MAGNESIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；277 K；1.6 M tri-Sodium Citrate dihydrate, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Resolution 7.00 Å R-free 0.359
1YV0 Crystal structure of skeletal muscle troponin in the Ca2+-free state Deposited 2005-02-14 Assembly 2 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain T 156–262（107 aa）
Not recorded MG MAGNESIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；277 K；1.6 M tri-Sodium Citrate dihydrate, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Resolution 7.00 Å R-free 0.359
2W49 ISOMETRICALLY CONTRACTING INSECT ASYNCHRONOUS FLIGHT MUSCLE Deposited 2008-11-24 Assembly 1 Protein heterocomplex Heteromer；Protein × 36 PDB declaration: 36-meric（36） Consistent with protein count
Chain 1 148–237（90 aa） Fragment：RESIDUES 148-237
Chain 4 148–237（90 aa） Fragment：RESIDUES 148-237
Chain 7 148–237（90 aa） Fragment：RESIDUES 148-237
Chain Y 148–237（90 aa） Fragment：RESIDUES 148-237
Not recorded CA CALCIUM ION × 16 ELECTRON MICROSCOPY
cryo-EM buffer 20 MM MOPS BUFFER, 5 MM NAN3, AND MGCL2, ATP, CACL2, AND EGTA IN VARYING MILLIMOLAR CONCENTRATIONS；20 MM MOPS BUFFER, 5 MM NAN3, AND MGCL2, ATP, CACL2, AND EGTA IN VARYING MILLIMOLAR CONCENTRATIONS
cryo-EM vitrification conditions Cryogen HELIUM；SMASH AGAINST A LIQUID HELIUM COOLED GOLD COATED COPPER MIRROR
Resolution 35.00 Å
2W4U Isometrically contracting insect asynchronous flight muscle quick frozen after a length step Deposited 2008-12-02 Assembly 1 Protein heterocomplex Heteromer；Protein × 36 PDB declaration: 36-meric（36） Consistent with protein count
Chain 1 148–237（90 aa） Fragment：RESIDUES 148-237
Chain 4 148–237（90 aa） Fragment：RESIDUES 148-237
Chain 7 148–237（90 aa） Fragment：RESIDUES 148-237
Chain Y 148–237（90 aa） Fragment：RESIDUES 148-237
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer 20 MM MOPS BUFFER, 5 MM NAN3, AND MGCL2, ATP, CACL2, AND EGTA IN VARYING MILLIMOLAR CONCENTRATIONS；20 MM MOPS BUFFER, 5 MM NAN3, AND MGCL2, ATP, CACL2, AND EGTA IN VARYING MILLIMOLAR CONCENTRATIONS
cryo-EM vitrification conditions Cryogen HELIUM；SMASH AGAINST A LIQUID HELIUM COOLED GOLD COATED COPPER MIRROR
Resolution 35.00 Å
2Z5H Crystal structure of the head-to-tail junction of tropomyosin complexed with a fragment of TnT Deposited 2007-07-12 Assembly 1 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain T 58–112（55 aa） Fragment：Residues 58-112
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；293 K；pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.89 Å R-free 0.247

This page presents structural evidence recorded in PDB/mmCIF.“No recorded non-water small molecule” does not prove that the experimental sample was ligand-free; experimental conditions belong to the PDB experiment, while ligands and copy counts are shown for each biological assembly.