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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：P02633 New Search
20PDB entries
24Biological assembly
28chain/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
1B1G SOLVATED REFINEMENT OF CA-LOADED CALBINDIN D9K Deposited 1998-11-20 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 4–78（75 aa）
Mutation：P43G CA CALCIUM ION × 2 SOLUTION NMR mmCIF provides none of the parsed conditions Resolution not provided
1BOC THE SOLUTION STRUCTURES OF MUTANT CALBINDIN D9K'S, AS DETERMINED BY NMR, SHOW THAT THE CALCIUM BINDING SITE CAN ADOPT DIFFERENT FOLDS Deposited 1993-04-23 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 4–78（75 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR mmCIF provides none of the parsed conditions Resolution not provided
1BOD THE SOLUTION STRUCTURES OF MUTANT CALBINDIN D9K'S, AS DETERMINED BY NMR, SHOW THAT THE CALCIUM BINDING SITE CAN ADOPT DIFFERENT FOLDS Deposited 1993-04-23 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 4–78（75 aa）
Mutation：A15D,P20G,P43M No recorded non-water small molecule SOLUTION NMR mmCIF provides none of the parsed conditions Resolution not provided
1CDN Solution structure of (CD2+)1-calbindin D9K reveals details of the stepwise structural changes along the apo--> (CA2+)II1--> (CA2+)I,II2 binding pathway Deposited 1995-08-04 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 4–78（75 aa）
Mutation：INS(MET 1), P43G No recorded non-water small molecule SOLUTION NMR mmCIF provides none of the parsed conditions Resolution not provided
1CLB Determination of the solution structure of apo calbindin D9K by nmr spectroscopy Deposited 1995-02-08 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 4–78（75 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR mmCIF provides none of the parsed conditions Resolution not provided
1D1O COOPERATIVITY IN EF-HAND CA2+-BINDING PROTEINS: EVIDENCE OF SITE-SITE COMMUNICATION FROM BINDING-INDUCED CHANGES IN STRUCTURE AND DYNAMICS OF N56A CALBINDIN D9K Deposited 1999-09-20 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 5–79（75 aa） Fragment：CALBINDIN D9K
Mutation：P43M, N56A No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6；300 K；Ionic strength (raw mmCIF value) 0；Pressure AMBIENT
NMR measurement conditions pH 6；300 K；Ionic strength (raw mmCIF value) 0；Pressure AMBIENT
NMR sample composition 4 MM N56A-CALBINDIN D9K
NMR sample composition 4 MM 15N-LABELED N56A-CALBINDIN D9K;
Resolution not provided
1HT9 DOMAIN SWAPPING EF-HANDS Deposited 2000-12-29 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 4–78（75 aa）
Chain B 4–78（75 aa）
Mutation：YES Mutation：YES CA CALCIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions EVAPORATION；293 K；ammonium sulphate, calcium chloride, magnesium chloride, EVAPORATION, temperature 293K
Resolution 1.76 Å R-free 0.192
1IG5 BOVINE CALBINDIN D9K BINDING MG2+ Deposited 2001-04-17 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 4–78（75 aa）
Not recorded MG MAGNESIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions EVAPORATION；pH 6.4；298 K；3M ammonium sulphate, 100 mM magnesium chloride, pH 6.4, EVAPORATION, temperature 298K
Resolution 1.50 Å R-free 0.285
1IGV BOVINE CALBINDIN D9K BINDING MN2+ Deposited 2001-04-18 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 4–78（75 aa）
Not recorded MN MANGANESE (II) ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions EVAPORATION；pH 5.6；295 K；65 % ammonium sulphate, 600 mM MnCl2, pH 5.6, EVAPORATION, temperature 295K
Resolution 1.85 Å R-free 0.272
1KCY NMR solution structure of apo calbindin D9k (F36G + P43M mutant) Deposited 2001-11-12 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 4–78（75 aa） Fragment：contains EF-HAND 1 (LOW AFFINITY) and EF-HAND 2 (HIGH AFFINITY)
Mutation：F36G, P43M No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6；300 K；Ionic strength (raw mmCIF value) no added salts；Pressure ambient
NMR sample composition 2.5 mM calbindin; 95% H2O; 5% D2O | 95% H20; 5% D2O
NMR sample composition 2.5 mM calbindin D9k U-15N; 95% H2O; 5% D2O | 95% H2O/5% D2O
NMR sample composition 2.5 mM calbindin D9k; 100% D20 | 100% D2O
Resolution not provided
1KQV Family of NMR Solution Structures of Ca Ln Calbindin D9K Deposited 2002-01-08 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 0–78（79 aa）
Mutation：P43M LA LANTHANUM (III) ION × 1 SOLUTION NMR
NMR measurement conditions pH 6；300 K；Ionic strength (raw mmCIF value) water solution；Pressure 1
NMR measurement conditions pH 6；283 K；Ionic strength (raw mmCIF value) water solution；Pressure 1
NMR sample composition 2.0 mM Ca Ln Cb | H2O/D2O 10:1
Resolution not provided
1KSM AVERAGE NMR SOLUTION STRUCTURE OF CA LN CALBINDIN D9K Deposited 2002-01-14 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 0–78（79 aa）
Mutation：P43M LA LANTHANUM (III) ION × 1 SOLUTION NMR
NMR measurement conditions pH 6；300 K；Ionic strength (raw mmCIF value) WATER SOLUTION；Pressure AMBIENT
NMR sample composition 1.5 MM [15N, 13C] - CA LN CALBINDIN, PH 6.0 | H20:D2O 90:10
Resolution not provided
1N65 FAMILY OF NMR SOLUTION STRUCTURES OF CA CE CALBINDIN D9K IN DENATURATING CONDITIONS Deposited 2002-11-08 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 4–78（75 aa）
Mutation：P43M CE CERIUM (III) ION × 1 SOLUTION NMR
NMR measurement conditions pH 6；298 K；Ionic strength (raw mmCIF value) 2M Guanidinium Chloride (GmdHCl)；Pressure 1
NMR measurement conditions pH 6；298 K；Ionic strength (raw mmCIF value) pure water；Pressure 1
NMR sample composition Uniform labeling with 15N, H2O/D20 90/10 | H2O/D20 90/10 Denaturating Conditions
NMR sample composition Uniform labeling with 15N, H2O/D20 90/10 | H2O/D20 90/10
Resolution not provided
1QX2 X-ray Structure of Calcium-loaded Calbindomodulin (A Calbindin D9k Re-engineered to Undergo a Conformational Opening) at 1.44 A Resolution Deposited 2003-09-04 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 4–78（75 aa）
Mutation：L6I, I9A, K12V, Y13F, L23I, L31V, L32M, E35L, F36G, L49M, F50I, L53V, Q67L, L69M, V70M, P43M Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；291 K；PEG 550 MME, MES, zinc sulfate, Tris-HCl, sodium chloride, calcium chloride, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 1.44 Å R-free 0.194
1QX2 X-ray Structure of Calcium-loaded Calbindomodulin (A Calbindin D9k Re-engineered to Undergo a Conformational Opening) at 1.44 A Resolution Deposited 2003-09-04 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 4–78（75 aa）
Mutation：L6I, I9A, K12V, Y13F, L23I, L31V, L32M, E35L, F36G, L49M, F50I, L53V, Q67L, L69M, V70M, P43M Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 2 ZN ZINC ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；291 K；PEG 550 MME, MES, zinc sulfate, Tris-HCl, sodium chloride, calcium chloride, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 1.44 Å R-free 0.194
1QX2 X-ray Structure of Calcium-loaded Calbindomodulin (A Calbindin D9k Re-engineered to Undergo a Conformational Opening) at 1.44 A Resolution Deposited 2003-09-04 Assembly 3 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 4–78（75 aa）
Chain B 4–78（75 aa）
Mutation：L6I, I9A, K12V, Y13F, L23I, L31V, L32M, E35L, F36G, L49M, F50I, L53V, Q67L, L69M, V70M, P43M Non-standard monomer：Yes (specific site not provided by mmCIF) Mutation：L6I, I9A, K12V, Y13F, L23I, L31V, L32M, E35L, F36G, L49M, F50I, L53V, Q67L, L69M, V70M, P43M Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 4 ZN ZINC ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；291 K；PEG 550 MME, MES, zinc sulfate, Tris-HCl, sodium chloride, calcium chloride, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 1.44 Å R-free 0.194
1QX2 X-ray Structure of Calcium-loaded Calbindomodulin (A Calbindin D9k Re-engineered to Undergo a Conformational Opening) at 1.44 A Resolution Deposited 2003-09-04 Assembly 4 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 4–78（75 aa）
Chain B 4–78（75 aa）
Mutation：L6I, I9A, K12V, Y13F, L23I, L31V, L32M, E35L, F36G, L49M, F50I, L53V, Q67L, L69M, V70M, P43M Non-standard monomer：Yes (specific site not provided by mmCIF) Mutation：L6I, I9A, K12V, Y13F, L23I, L31V, L32M, E35L, F36G, L49M, F50I, L53V, Q67L, L69M, V70M, P43M Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 4 ZN ZINC ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；291 K；PEG 550 MME, MES, zinc sulfate, Tris-HCl, sodium chloride, calcium chloride, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 1.44 Å R-free 0.194
1QX2 X-ray Structure of Calcium-loaded Calbindomodulin (A Calbindin D9k Re-engineered to Undergo a Conformational Opening) at 1.44 A Resolution Deposited 2003-09-04 Assembly 5 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 4–78（75 aa）
Chain B 4–78（75 aa）
Mutation：L6I, I9A, K12V, Y13F, L23I, L31V, L32M, E35L, F36G, L49M, F50I, L53V, Q67L, L69M, V70M, P43M Non-standard monomer：Yes (specific site not provided by mmCIF) Mutation：L6I, I9A, K12V, Y13F, L23I, L31V, L32M, E35L, F36G, L49M, F50I, L53V, Q67L, L69M, V70M, P43M Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 4 ZN ZINC ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；291 K；PEG 550 MME, MES, zinc sulfate, Tris-HCl, sodium chloride, calcium chloride, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 1.44 Å R-free 0.194
1RT0 12-mer from site II calbindin D9K (DKNGDGEVSFEE) coordinating Zn(II) Deposited 2003-12-10 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 57–68（12 aa） Fragment：residues 57-68 (SWS P02632)
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 7；288 K；Ionic strength (raw mmCIF value) aprox 0；Pressure ambient
NMR sample composition 3mM Peptide and Zn(NO3)2. NaOH and HNO3 added for pH fixing to 7; 80% H2O, 20% D2O | 80% H2O, 20% D2O
Resolution not provided
2BCA HIGH-RESOLUTION SOLUTION STRUCTURE OF CALCIUM-LOADED CALBINDIN D9K Deposited 1993-08-18 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 4–78（75 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR mmCIF provides none of the parsed conditions Resolution not provided
2BCB HIGH-RESOLUTION SOLUTION STRUCTURE OF CALCIUM-LOADED CALBINDIN D9K Deposited 1993-08-18 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 4–78（75 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR mmCIF provides none of the parsed conditions Resolution not provided
2MAZ Backbone 1H, 13C, and 15N Chemical Shift Assignments for Bovine Apo Calbindin Deposited 2013-07-22 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 5–79（75 aa） Fragment：UNP residues 5-79
Mutation：P43M No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.2；298 K；Ionic strength (raw mmCIF value) 0.02；Pressure ambient
NMR sample composition 1mM [U-100% 13C; U-100% 15N] D2O-1, 90% H2O/10% D2O | 90% H2O/10% D2O
Resolution not provided
3ICB THE REFINED STRUCTURE OF VITAMIN D-DEPENDENT CALCIUM-BINDING PROTEIN FROM BOVINE INTESTINE. MOLECULAR DETAILS, ION BINDING, AND IMPLICATIONS FOR THE STRUCTURE OF OTHER CALCIUM-BINDING PROTEINS Deposited 1986-09-09 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 4–78（75 aa）
Not recorded CA CALCIUM ION × 2 SO4 SULFATE ION × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.30 Å
4ICB PROLINE CIS-TRANS ISOMERS IN CALBINDIN D9K OBSERVED BY X-RAY CRYSTALLOGRAPHY Deposited 1991-08-27 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 4–78（75 aa）
Not recorded CA CALCIUM ION × 2 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 1.60 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.