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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：P02741 New Search
24PDB entries
39Biological assembly
216chain/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
1B09 HUMAN C-REACTIVE PROTEIN COMPLEXED WITH PHOSPHOCHOLINE Deposited 1998-11-18 Assembly 1 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain A 19–224（206 aa）
Chain B 19–224（206 aa）
Chain C 19–224（206 aa）
Chain D 19–224（206 aa）
Chain E 19–224（206 aa）
Not recorded CA CALCIUM ION × 10 PC PHOSPHOCHOLINE × 5 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7.6；pH 7.6
Resolution 2.50 Å R-free 0.242
1GNH HUMAN C-REACTIVE PROTEIN Deposited 1996-03-01 Assembly 1 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain A 19–224（206 aa）
Chain B 19–224（206 aa）
Chain C 19–224（206 aa）
Chain D 19–224（206 aa）
Chain E 19–224（206 aa）
Not recorded CA CALCIUM ION × 8 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 3.00 Å R-free 0.273
1GNH HUMAN C-REACTIVE PROTEIN Deposited 1996-03-01 Assembly 2 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain F 19–224（206 aa）
Chain G 19–224（206 aa）
Chain H 19–224（206 aa）
Chain I 19–224（206 aa）
Chain J 19–224（206 aa）
Not recorded CA CALCIUM ION × 8 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 3.00 Å R-free 0.273
1LJ7 Crystal structure of calcium-depleted human C-reactive protein from perfectly twinned data Deposited 2002-04-19 Assembly 1 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain A 19–224（206 aa）
Chain B 19–224（206 aa）
Chain C 19–224（206 aa）
Chain D 19–224（206 aa）
Chain E 19–224（206 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；VAPOR DIFFUSION, HANGING DROP
Resolution 3.15 Å R-free 0.199
1LJ7 Crystal structure of calcium-depleted human C-reactive protein from perfectly twinned data Deposited 2002-04-19 Assembly 2 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain F 19–224（206 aa）
Chain G 19–224（206 aa）
Chain H 19–224（206 aa）
Chain I 19–224（206 aa）
Chain J 19–224（206 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；VAPOR DIFFUSION, HANGING DROP
Resolution 3.15 Å R-free 0.199
3L2Y The structure of C-reactive protein bound to phosphoethanolamine Deposited 2009-12-15 Assembly 1 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain A 19–224（206 aa）
Chain B 19–224（206 aa）
Chain C 19–224（206 aa）
Chain D 19–224（206 aa）
Chain E 19–224（206 aa）
Not recorded CA CALCIUM ION × 10 OPE PHOSPHORIC ACID MONO-(2-AMINO-ETHYL) ESTER × 5 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；285.15 K；0.06M TRIS-HCL pH7.5, 10% MPD, 0.01M CaCl2, 0.14M NaCl, 0.1% NaN3, 0.1% LM AGAROSE, VAPOR DIFFUSION, HANGING DROP, temperature 285.15K
Resolution 2.70 Å R-free 0.246
3L2Y The structure of C-reactive protein bound to phosphoethanolamine Deposited 2009-12-15 Assembly 2 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain F 19–224（206 aa）
Chain G 19–224（206 aa）
Chain H 19–224（206 aa）
Chain I 19–224（206 aa）
Chain J 19–224（206 aa）
Not recorded CA CALCIUM ION × 10 OPE PHOSPHORIC ACID MONO-(2-AMINO-ETHYL) ESTER × 5 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；285.15 K；0.06M TRIS-HCL pH7.5, 10% MPD, 0.01M CaCl2, 0.14M NaCl, 0.1% NaN3, 0.1% LM AGAROSE, VAPOR DIFFUSION, HANGING DROP, temperature 285.15K
Resolution 2.70 Å R-free 0.246
3L2Y The structure of C-reactive protein bound to phosphoethanolamine Deposited 2009-12-15 Assembly 3 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain K 19–224（206 aa）
Chain L 19–224（206 aa）
Chain M 19–224（206 aa）
Chain N 19–224（206 aa）
Chain O 19–224（206 aa）
Not recorded CA CALCIUM ION × 10 OPE PHOSPHORIC ACID MONO-(2-AMINO-ETHYL) ESTER × 5 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；285.15 K；0.06M TRIS-HCL pH7.5, 10% MPD, 0.01M CaCl2, 0.14M NaCl, 0.1% NaN3, 0.1% LM AGAROSE, VAPOR DIFFUSION, HANGING DROP, temperature 285.15K
Resolution 2.70 Å R-free 0.246
3L2Y The structure of C-reactive protein bound to phosphoethanolamine Deposited 2009-12-15 Assembly 4 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain P 19–224（206 aa）
Chain Q 19–224（206 aa）
Chain R 19–224（206 aa）
Chain S 19–224（206 aa）
Chain T 19–224（206 aa）
Not recorded CA CALCIUM ION × 10 OPE PHOSPHORIC ACID MONO-(2-AMINO-ETHYL) ESTER × 5 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；285.15 K；0.06M TRIS-HCL pH7.5, 10% MPD, 0.01M CaCl2, 0.14M NaCl, 0.1% NaN3, 0.1% LM AGAROSE, VAPOR DIFFUSION, HANGING DROP, temperature 285.15K
Resolution 2.70 Å R-free 0.246
3PVN Triclinic form of Human C-Reactive Protein in complex with Zinc Deposited 2010-12-07 Assembly 1 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain A 19–224（206 aa） Fragment：UNP residues 19-224
Chain B 19–224（206 aa） Fragment：UNP residues 19-224
Chain C 19–224（206 aa） Fragment：UNP residues 19-224
Chain D 19–224（206 aa） Fragment：UNP residues 19-224
Chain E 19–224（206 aa） Fragment：UNP residues 19-224
Not recorded CA CALCIUM ION × 10 ZN ZINC ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 8；289 K；12% PEG 4000, 0.1M Tris-Hcl, 0.2M MgCl2, 0.05M LiCl, pH 8.0, VAPOR DIFFUSION, temperature 289K
Resolution 1.98 Å R-free 0.236
3PVN Triclinic form of Human C-Reactive Protein in complex with Zinc Deposited 2010-12-07 Assembly 2 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain F 19–224（206 aa） Fragment：UNP residues 19-224
Chain G 19–224（206 aa） Fragment：UNP residues 19-224
Chain H 19–224（206 aa） Fragment：UNP residues 19-224
Chain I 19–224（206 aa） Fragment：UNP residues 19-224
Chain J 19–224（206 aa） Fragment：UNP residues 19-224
Not recorded CA CALCIUM ION × 10 ZN ZINC ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 8；289 K；12% PEG 4000, 0.1M Tris-Hcl, 0.2M MgCl2, 0.05M LiCl, pH 8.0, VAPOR DIFFUSION, temperature 289K
Resolution 1.98 Å R-free 0.236
3PVN Triclinic form of Human C-Reactive Protein in complex with Zinc Deposited 2010-12-07 Assembly 3 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain K 19–224（206 aa） Fragment：UNP residues 19-224
Chain L 19–224（206 aa） Fragment：UNP residues 19-224
Chain M 19–224（206 aa） Fragment：UNP residues 19-224
Chain N 19–224（206 aa） Fragment：UNP residues 19-224
Chain O 19–224（206 aa） Fragment：UNP residues 19-224
Not recorded CA CALCIUM ION × 10 ZN ZINC ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 8；289 K；12% PEG 4000, 0.1M Tris-Hcl, 0.2M MgCl2, 0.05M LiCl, pH 8.0, VAPOR DIFFUSION, temperature 289K
Resolution 1.98 Å R-free 0.236
3PVN Triclinic form of Human C-Reactive Protein in complex with Zinc Deposited 2010-12-07 Assembly 4 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain P 19–224（206 aa） Fragment：UNP residues 19-224
Chain Q 19–224（206 aa） Fragment：UNP residues 19-224
Chain R 19–224（206 aa） Fragment：UNP residues 19-224
Chain S 19–224（206 aa） Fragment：UNP residues 19-224
Chain T 19–224（206 aa） Fragment：UNP residues 19-224
Not recorded CA CALCIUM ION × 10 ZN ZINC ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 8；289 K；12% PEG 4000, 0.1M Tris-Hcl, 0.2M MgCl2, 0.05M LiCl, pH 8.0, VAPOR DIFFUSION, temperature 289K
Resolution 1.98 Å R-free 0.236
3PVO Monoclinic form of Human C-Reactive Protein Deposited 2010-12-07 Assembly 1 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain A 19–224（206 aa） Fragment：UNP residues 19-224
Chain B 19–224（206 aa） Fragment：UNP residues 19-224
Chain C 19–224（206 aa） Fragment：UNP residues 19-224
Chain D 19–224（206 aa） Fragment：UNP residues 19-224
Chain E 19–224（206 aa） Fragment：UNP residues 19-224
Not recorded CA CALCIUM ION × 10 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 8；289 K；12% PEG 4000, 0.1M Tris-HCl, 0.2M MgCl2, 0.05M LiCl, pH 8.0, VAPOR DIFFUSION, temperature 289K
Resolution 3.00 Å R-free 0.285
3PVO Monoclinic form of Human C-Reactive Protein Deposited 2010-12-07 Assembly 2 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain F 19–224（206 aa） Fragment：UNP residues 19-224
Chain G 19–224（206 aa） Fragment：UNP residues 19-224
Chain H 19–224（206 aa） Fragment：UNP residues 19-224
Chain I 19–224（206 aa） Fragment：UNP residues 19-224
Chain J 19–224（206 aa） Fragment：UNP residues 19-224
Not recorded CA CALCIUM ION × 10 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 8；289 K；12% PEG 4000, 0.1M Tris-HCl, 0.2M MgCl2, 0.05M LiCl, pH 8.0, VAPOR DIFFUSION, temperature 289K
Resolution 3.00 Å R-free 0.285
3PVO Monoclinic form of Human C-Reactive Protein Deposited 2010-12-07 Assembly 3 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain K 19–224（206 aa） Fragment：UNP residues 19-224
Chain L 19–224（206 aa） Fragment：UNP residues 19-224
Chain M 19–224（206 aa） Fragment：UNP residues 19-224
Chain N 19–224（206 aa） Fragment：UNP residues 19-224
Chain O 19–224（206 aa） Fragment：UNP residues 19-224
Not recorded CA CALCIUM ION × 10 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 8；289 K；12% PEG 4000, 0.1M Tris-HCl, 0.2M MgCl2, 0.05M LiCl, pH 8.0, VAPOR DIFFUSION, temperature 289K
Resolution 3.00 Å R-free 0.285
3PVO Monoclinic form of Human C-Reactive Protein Deposited 2010-12-07 Assembly 4 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain P 19–224（206 aa） Fragment：UNP residues 19-224
Chain Q 19–224（206 aa） Fragment：UNP residues 19-224
Chain R 19–224（206 aa） Fragment：UNP residues 19-224
Chain S 19–224（206 aa） Fragment：UNP residues 19-224
Chain T 19–224（206 aa） Fragment：UNP residues 19-224
Not recorded CA CALCIUM ION × 10 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 8；289 K；12% PEG 4000, 0.1M Tris-HCl, 0.2M MgCl2, 0.05M LiCl, pH 8.0, VAPOR DIFFUSION, temperature 289K
Resolution 3.00 Å R-free 0.285
7PK9 C-reactive protein decamer at pH 7.5 Deposited 2021-08-25 Assembly 1 Protein homooligomer Homooligomer；Protein × 10 PDB declaration: decameric（10） Consistent with protein count
Chain A 19–224（206 aa）
Chain B 19–224（206 aa）
Chain C 19–224（206 aa）
Chain D 19–224（206 aa）
Chain E 19–224（206 aa）
Chain F 19–224（206 aa）
Chain G 19–224（206 aa）
Chain H 19–224（206 aa）
Chain I 19–224（206 aa）
Chain J 19–224（206 aa）
Not recorded CA CALCIUM ION × 20 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.80 Å
7PKB C-reactive protein pentamer at pH 7.5 Deposited 2021-08-25 Assembly 1 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain A 19–224（206 aa）
Chain B 19–224（206 aa）
Chain C 19–224（206 aa）
Chain D 19–224（206 aa）
Chain E 19–224（206 aa）
Not recorded CA CALCIUM ION × 10 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
7PKD C-reactive protein decamer at pH 7.5 with phosphocholine ligand Deposited 2021-08-25 Assembly 1 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain F 19–224（206 aa）
Chain G 19–224（206 aa）
Chain H 19–224（206 aa）
Chain I 19–224（206 aa）
Chain J 19–224（206 aa）
Not recorded CA CALCIUM ION × 10 PC PHOSPHOCHOLINE × 5 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
7PKD C-reactive protein decamer at pH 7.5 with phosphocholine ligand Deposited 2021-08-25 Assembly 2 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain A 19–224（206 aa）
Chain B 19–224（206 aa）
Chain C 19–224（206 aa）
Chain D 19–224（206 aa）
Chain E 19–224（206 aa）
Not recorded CA CALCIUM ION × 10 PC PHOSPHOCHOLINE × 5 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
7PKE C-reactive protein pentamer at pH 7.5 with phosphocholine ligand Deposited 2021-08-25 Assembly 1 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain A 19–224（206 aa）
Chain B 19–224（206 aa）
Chain C 19–224（206 aa）
Chain D 19–224（206 aa）
Chain E 19–224（206 aa）
Not recorded CA CALCIUM ION × 10 PC PHOSPHOCHOLINE × 5 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
7PKF C-reactive protein decamer at pH 5 Deposited 2021-08-25 Assembly 1 Protein homooligomer Homooligomer；Protein × 10 PDB declaration: decameric（10） Consistent with protein count
Chain A 19–224（206 aa）
Chain B 19–224（206 aa）
Chain C 19–224（206 aa）
Chain D 19–224（206 aa）
Chain E 19–224（206 aa）
Chain F 19–224（206 aa）
Chain G 19–224（206 aa）
Chain H 19–224（206 aa）
Chain I 19–224（206 aa）
Chain J 19–224（206 aa）
Not recorded CA CALCIUM ION × 20 ELECTRON MICROSCOPY
cryo-EM buffer pH 5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.80 Å
7PKG C-reactive protein pentamer at pH 5 Deposited 2021-08-25 Assembly 1 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain A 19–224（206 aa）
Chain B 19–224（206 aa）
Chain C 19–224（206 aa）
Chain D 19–224（206 aa）
Chain E 19–224（206 aa）
Not recorded CA CALCIUM ION × 10 ELECTRON MICROSCOPY
cryo-EM buffer pH 5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
7PKH C-reactive protein decamer at pH 5 with phosphocholine ligand Deposited 2021-08-25 Assembly 1 Protein homooligomer Homooligomer；Protein × 10 PDB declaration: decameric（10） Consistent with protein count
Chain A 19–224（206 aa）
Chain B 19–224（206 aa）
Chain C 19–224（206 aa）
Chain D 19–224（206 aa）
Chain E 19–224（206 aa）
Chain F 19–224（206 aa）
Chain G 19–224（206 aa）
Chain H 19–224（206 aa）
Chain I 19–224（206 aa）
Chain J 19–224（206 aa）
Not recorded CA CALCIUM ION × 20 PC PHOSPHOCHOLINE × 10 ELECTRON MICROSCOPY
cryo-EM buffer pH 5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.00 Å
7TBA Pentraxin - ligand complex Deposited 2021-12-21 Assembly 1 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain A 19–224（206 aa）
Chain B 19–224（206 aa）
Chain C 19–224（206 aa）
Chain D 19–224（206 aa）
Chain E 19–224（206 aa）
Not recorded XQY [3-(dibutylamino)propyl]phosphonic acid × 5 CA CALCIUM ION × 10 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；295 K；100mM Tris pH 9.0, 10% PEG 4000, 50mM lithium chloride, 200mM magnesium chloride
Resolution 3.50 Å R-free 0.260
7TBA Pentraxin - ligand complex Deposited 2021-12-21 Assembly 2 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain F 19–224（206 aa）
Chain G 19–224（206 aa）
Chain H 19–224（206 aa）
Chain I 19–224（206 aa）
Chain J 19–224（206 aa）
Not recorded XQY [3-(dibutylamino)propyl]phosphonic acid × 5 CA CALCIUM ION × 10 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；295 K；100mM Tris pH 9.0, 10% PEG 4000, 50mM lithium chloride, 200mM magnesium chloride
Resolution 3.50 Å R-free 0.260
7TBA Pentraxin - ligand complex Deposited 2021-12-21 Assembly 3 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain K 19–224（206 aa）
Chain L 19–224（206 aa）
Chain M 19–224（206 aa）
Chain N 19–224（206 aa）
Chain O 19–224（206 aa）
Not recorded XQY [3-(dibutylamino)propyl]phosphonic acid × 5 CA CALCIUM ION × 10 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；295 K；100mM Tris pH 9.0, 10% PEG 4000, 50mM lithium chloride, 200mM magnesium chloride
Resolution 3.50 Å R-free 0.260
7TBA Pentraxin - ligand complex Deposited 2021-12-21 Assembly 4 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain P 19–224（206 aa）
Chain Q 19–224（206 aa）
Chain R 19–224（206 aa）
Chain S 19–224（206 aa）
Chain T 19–224（206 aa）
Not recorded XQY [3-(dibutylamino)propyl]phosphonic acid × 5 CA CALCIUM ION × 10 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；295 K；100mM Tris pH 9.0, 10% PEG 4000, 50mM lithium chloride, 200mM magnesium chloride
Resolution 3.50 Å R-free 0.260
8WV4 C-reactive protein, pentamer Deposited 2023-10-23 Assembly 1 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain A 1–224（224 aa）
Chain B 1–224（224 aa）
Chain C 1–224（224 aa）
Chain D 1–224（224 aa）
Chain E 1–224（224 aa）
Not recorded CA CALCIUM ION × 10 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE；Blot force, 0
Resolution 3.30 Å
8WV5 C-reactive protein, decamer Deposited 2023-10-23 Assembly 1 Protein homooligomer Homooligomer；Protein × 10 PDB declaration: decameric（10） Consistent with protein count
Chain A 1–224（224 aa）
Chain B 1–224（224 aa）
Chain C 1–224（224 aa）
Chain D 1–224（224 aa）
Chain E 1–224（224 aa）
Chain F 1–224（224 aa）
Chain G 1–224（224 aa）
Chain H 1–224（224 aa）
Chain I 1–224（224 aa）
Chain J 1–224（224 aa）
Not recorded CA CALCIUM ION × 20 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE；Blot force, 0
Resolution 3.50 Å
9JNY C recatived protein pentamer Deposited 2024-09-24 Assembly 1 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain A 19–224（206 aa）
Chain B 19–224（206 aa）
Chain C 19–224（206 aa）
Chain D 19–224（206 aa）
Chain E 19–224（206 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8；20mM Tris-HCl
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.74 Å
9JO7 CRP-HCAb4 complex Deposited 2024-09-24 Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric（10） Consistent with protein count
Chain A 19–224（206 aa）
Chain B 19–224（206 aa）
Chain D 19–224（206 aa）
Chain F 19–224（206 aa）
Chain H 19–224（206 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8；20mM Tris-HCl
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.68 Å
9JO9 CRP-HCAb3 complex Deposited 2024-09-24 Assembly 1 Protein heterocomplex Heteromer；Protein × 20 PDB declaration: eicosameric（20） Consistent with protein count
Chain B 19–224（206 aa）
Chain D 19–224（206 aa）
Chain F 19–224（206 aa）
Chain H 19–224（206 aa）
Chain J 19–224（206 aa）
Chain L 19–224（206 aa）
Chain N 19–224（206 aa）
Chain Q 19–224（206 aa）
Chain S 19–224（206 aa）
Chain T 19–224（206 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8；20mM Tris-HCl
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.65 Å
9K94 CRP-HCAb2 complex Deposited 2024-10-25 Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric（10） Consistent with protein count
Chain A 19–224（206 aa）
Chain C 19–224（206 aa）
Chain D 19–224（206 aa）
Chain F 19–224（206 aa）
Chain I 19–224（206 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8；20 mM Tris-HCL
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.04 Å
9KMP CRP-HCAb1 complex Deposited 2024-11-16 Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric（10） Consistent with protein count
Chain A 19–224（206 aa）
Chain C 19–224（206 aa）
Chain E 19–224（206 aa）
Chain G 19–224（206 aa）
Chain H 19–224（206 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8；20mM Tris-HCl
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
9KMS CRP antigen-antibody2 complex Deposited 2024-11-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric（10） Consistent with protein count
Chain A 19–224（206 aa）
Chain C 19–224（206 aa）
Chain E 19–224（206 aa）
Chain G 19–224（206 aa）
Chain I 19–224（206 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8；20mM Tris-HCl
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
9U4E Cryo-EM structure of the human CRP-CPS23F complex Deposited 2025-03-19 Assembly 1 Other combination Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain A 1–224（224 aa）
Chain B 1–224（224 aa）
Chain C 1–224（224 aa）
Chain D 1–224（224 aa）
Chain E 1–224（224 aa）
Not recorded CA CALCIUM ION × 10 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.78 Å
9VCA Binding site between C-reactive protein and c2cc monoclonal antibody Deposited 2025-06-05 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain E 19–224（206 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6；20 mM Tris-HCl buffer (pH 7.6), containing 150 mM NaCl
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.40 Å

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.