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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：P01542 New Search
27PDB entries
28Biological assembly
28chain/assembly records
Main Difference Dimensions in This Set
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
1AB1 SI FORM CRAMBIN Deposited 1997-01-31 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded EOH ETHANOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions vapor diffusion - hanging drop - microseeding；pH 7；HPLC PURIFIED SI-CRAMBIN PROTEIN WAS DISSOLVED AT 25 MG/ML IN 80% ETHANOL/WATER (V/V), AND EQUILIBRATED AGAINS 60% ETHANOL. AFTER 10 DAYS, THE RESERVOIR WAS LOWERED TO 50% AND MICROSEEDED BY THE STREAK SEEDING METHOD (CAT WHISKER). AFTER LOWERING THE RESERVOIR TO 45%, GOOD CRYSTALS WERE FORMED., pH 7., vapor diffusion - hanging drop - microseeding
Resolution 0.89 Å
1CBN ATOMIC RESOLUTION (0.83 ANGSTROMS) CRYSTAL STRUCTURE OF THE HYDROPHOBIC PROTEIN CRAMBIN AT 130 K Deposited 1991-10-11 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded EOH ETHANOL × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 0.83 Å
1CCM DIRECT NOE REFINEMENT OF CRAMBIN FROM 2D NMR DATA USING A SLOW-COOLING ANNEALING PROTOCOL Deposited 1993-04-14 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR mmCIF provides none of the parsed conditions Resolution not provided
1CCN DIRECT NOE REFINEMENT OF CRAMBIN FROM 2D NMR DATA USING A SLOW-COOLING ANNEALING PROTOCOL Deposited 1993-04-14 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR mmCIF provides none of the parsed conditions Resolution not provided
1CNR CORRELATED DISORDER OF THE PURE PRO22(SLASH)LEU25 FORM OF CRAMBIN AT 150K REFINED TO 1.05 ANGSTROMS RESOLUTION Deposited 1993-07-15 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded EOH ETHANOL × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 1.05 Å
1CRN WATER STRUCTURE OF A HYDROPHOBIC PROTEIN AT ATOMIC RESOLUTION. PENTAGON RINGS OF WATER MOLECULES IN CRYSTALS OF CRAMBIN Deposited 1981-04-30 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 1.50 Å
1CXR AUTOMATED 2D NOESY ASSIGNMENT AND STRUCTURE CALCULATION OF CRAMBIN(S22/I25) WITH SELF-CORRECTING DISTANCE GEOMETRY BASED NOAH/DIAMOD PROGRAMS Deposited 1999-08-30 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa） Fragment：ISOFORM OF CRAMBIN (46 RESIDUES)
Mutation：S22P, I25L No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.5；298 K；Pressure 1
NMR sample composition 2.5 MM CRAMBIN(SER/ILE) 0.7 ML OF 75% D6-ACETONE, 20%H2O,5%D2O BUFFER
Resolution not provided
1EJG CRAMBIN AT ULTRA-HIGH RESOLUTION: VALENCE ELECTRON DENSITY. Deposited 2000-03-02 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa） Fragment：CRAMBIN
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；293 K；The protein (40 mg/ml in 80% ethanol) is equilibrated against 60% ethanol. Not buffered., pH 7, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 0.54 Å R-free 0.094
1JXT CRAMBIN MIXED SEQUENCE FORM AT 160 K. PROTEIN/WATER SUBSTATES Deposited 2001-09-08 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded EOH ETHANOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；293 K；ethanol, pH 7.00, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 0.89 Å
1JXU CRAMBIN MIXED SEQUENCE FORM AT 240 K. PROTEIN/WATER SUBSTATES Deposited 2001-09-09 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded EOH ETHANOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；293 K；ethanol, pH 7.00, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 0.99 Å
1JXW CRAMBIN MIXED SEQUENCE FORM AT 180 K. PROTEIN/WATER SUBSTATES Deposited 2001-09-10 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded EOH ETHANOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；293 K；ethanol, pH 7.00, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 0.89 Å
1JXX CRAMBIN MIXED SEQUENCE FORM AT 200 K. PROTEIN/WATER SUBSTATES Deposited 2001-09-10 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded EOH ETHANOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；293 K；ethanol, pH 7.00, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 0.89 Å
1JXY CRAMBIN MIXED SEQUENCE FORM AT 220 K. PROTEIN/WATER SUBSTATES Deposited 2001-09-10 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded EOH ETHANOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；293 K；ethanol, pH 7.00, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 0.89 Å
1YV8 Solution structure of crambin in acetone/water mixed solvent Deposited 2005-02-15 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions 298 K；Ionic strength (raw mmCIF value) 0；Pressure ambient
NMR sample composition 1mM crambin U-15N,13C, 75% acetone, 15% H2O, 10% D2O | 75% acetone, 15% H2O, 10% D2O
Resolution not provided
1YVA NMR solution structure of crambin in DPC micelles Deposited 2005-02-15 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6；298 K；Ionic strength (raw mmCIF value) 0；Pressure ambient
NMR sample composition 0.5 mM crambin U-15N,13C, pH 6.0, 20 mM phosphate buffer, 300mM DPC, 90% H2O, 10% D2O | 300 mM DPC, 20 mM phosphate buffer, 90% H2O, 10% D2O
Resolution not provided
2EYA DMSO refined solution structure of crambin in acetone/water Deposited 2005-11-09 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions 298 K；Pressure AMBIENT
NMR sample composition 1MM CRAMBIN U-15N,13C, 75% ACETONE, 15% H2O, 10% D2O | 75% ACETONE, 15% H2O, 10% D2O
Resolution not provided
2EYB Water refined solution structure of crambin in ACETONE/WATER Deposited 2005-11-09 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions 298 K；Ionic strength (raw mmCIF value) 0；Pressure AMBIENT
NMR sample composition 1MM CRAMBIN U-15N,13C, 75% ACETONE, 15% H2O, 10% D2O | 75% ACETONE, 15% H2O, 10% D2O
Resolution not provided
2EYC DMSO refined solution structure of crambin in dpc micelles Deposited 2005-11-09 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6；298 K；Ionic strength (raw mmCIF value) 0；Pressure AMBIENT
NMR sample composition 0.5 MM CRAMBIN U-15N,13C, PH 6.0, 20 MM PHOSPHATE BUFFER, 300MM DPC, 90% H2O, 10% D2O | 20 MM PHOSPHATE BUFFER, 300MM DPC, 90% H2O, 10% D2O
Resolution not provided
2EYD Water refined solution structure of crambin in dpc micelles Deposited 2005-11-09 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6；298 K；Ionic strength (raw mmCIF value) 0；Pressure AMBIENT
NMR sample composition 0.5 MM CRAMBIN U-15N,13C, PH 6.0, 20 MM PHOSPHATE BUFFER, 300MM DPC, 90% H2O, 10% D2O | 20 MM PHOSPHATE BUFFER, 300MM DPC, 90% H2O, 10% D2O
Resolution not provided
2FD7 X-ray Crystal Structure of Chemically Synthesized Crambin Deposited 2005-12-13 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；298 K；The native crambin crystals were grown from the aqueous solution by mixing a 2 ul aliquot of a crambin (10 mg/ml in pH 8.0, 100mM HEPES buffer containing 150mM NaCl) and 2 ul of a 0.8 M succinic acid, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 1.75 Å R-free 0.185
2FD9 X-ray Crystal Structure of Chemically Synthesized Crambin-{alpha}carboxamide Deposited 2005-12-13 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；277 K；X-ray crystallography-quality crystals for crambin-carboxamide were formed by mixing 2 ul of protein (10 mg/ml in pH 7.5 100mM HEPES buffer containing 150 mM NaCl) and 2 ul of a 0.8 M succinic acid (used for X-ray diffraction), or by mixing 2 ul of the protein solution with 2 ul of 0.1 M HEPES buffer containing 15% v/v tacsimate and 2% w/v polyethylene glycol 3350, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Resolution 1.60 Å R-free 0.234
3NIR Crystal structure of small protein crambin at 0.48 A resolution Deposited 2010-06-16 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded EOH ETHANOL × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；293 K；60% ethanol in water, pH 7, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 0.48 Å
3U7T Room temperature ultra-high resolution time-of-flight neutron and X-ray diffraction studies of H/D exchanged crambin Deposited 2011-10-14 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；298 K；Vapor diffusion of protein in 80 % EtOH solution against a 55 % EtOH solution, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 0.85 Å R-free 0.136
3UE7 X-ray crystal structure of a novel topological analogue of crambin Deposited 2011-10-28 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–46（46 aa） Fragment：L-crambin topological analogue
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.7；292 K；100 mM imidazole, 200 mM Zinc chloride, 7.5% Ethanol, pH 4.7, VAPOR DIFFUSION, HANGING DROP, temperature 292K
Resolution 1.08 Å R-free 0.176
3UE7 X-ray crystal structure of a novel topological analogue of crambin Deposited 2011-10-28 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–46（46 aa） Fragment：L-crambin topological analogue
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.7；292 K；100 mM imidazole, 200 mM Zinc chloride, 7.5% Ethanol, pH 4.7, VAPOR DIFFUSION, HANGING DROP, temperature 292K
Resolution 1.08 Å R-free 0.176
4FC1 Ultra-high resolution neutron structure of crambin at room-temperature Deposited 2012-05-23 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded No recorded non-water small molecule NEUTRON DIFFRACTION
X-ray crystallization conditions 290 K；large crystals were obtained in 1mL crystallization drops containing 20-30mg/ml protein in 80% EtOH/H2O; the well solution was 60% EtOH/H2O; no mixing with well solution was done., VAPOR DIFFUSION, SITTING DROP, temperature 290K
Resolution 1.10 Å R-free 0.253
9EWK Solvent organization in ultrahigh-resolution protein crystal structure at room temperature Deposited 2024-04-04 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded EOH ETHANOL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；289 K；80% (v/v) ethanol:water solution
Resolution 0.70 Å
9PIS Ab initio structure of crambin by MicroED at 0.85A Deposited 2025-07-11 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–46（46 aa）
Not recorded No recorded non-water small molecule ELECTRON CRYSTALLOGRAPHY
cryo-EM buffer pH 7；Simple mixture of ethanol and water.
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 0.85 Å R-free 0.164

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.