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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：P94739 New Search
2PDB entries
3Biological assembly
3chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state Different ligand/ion 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
2GRX Crystal structure of TonB in complex with FhuA, E. coli outer membrane receptor for ferrichrome Deposited 2006-04-25 Assembly 1 Other combination Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 33–239（207 aa）
Not recorded PO4 PHOSPHATE ION × 1 FTT 3-HYDROXY-TETRADECANOIC ACID × 4 DPO DIPHOSPHATE × 1 DAO LAURIC ACID × 1 EAP 2-AMINO-VINYL-PHOSPHATE × 1 FCI FERRICROCIN-IRON × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；291 K；8% polyethylene glycol 4000, 50 mM MES (pH 6.0), 75 mM NaCl, 5% glycerol, 0.7% C8E4, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 3.30 Å R-free 0.329
2GRX Crystal structure of TonB in complex with FhuA, E. coli outer membrane receptor for ferrichrome Deposited 2006-04-25 Assembly 2 Other combination Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain D 33–239（207 aa）
Not recorded PO4 PHOSPHATE ION × 1 FTT 3-HYDROXY-TETRADECANOIC ACID × 4 DPO DIPHOSPHATE × 1 DAO LAURIC ACID × 1 EAP 2-AMINO-VINYL-PHOSPHATE × 1 FCI FERRICROCIN-IRON × 1 MYR MYRISTIC ACID × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；291 K；8% polyethylene glycol 4000, 50 mM MES (pH 6.0), 75 mM NaCl, 5% glycerol, 0.7% C8E4, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 3.30 Å R-free 0.329
2GSK Structure of the BtuB:TonB Complex Deposited 2006-04-26 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 153–233（81 aa） Fragment：C-TERMINAL DOMAIN
Not recorded CA CALCIUM ION × 2 CNC CYANOCOBALAMIN × 1 LDA LAURYL DIMETHYLAMINE-N-OXIDE × 4 OCT N-OCTANE × 3 HEX HEXANE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions pH 5.1；288 K；30% (v/v) PEG 300, 0.1M sodium acetate , pH 5.1, VAPOR DIFFUSION, SITTING DROP, temperature 288K, pH 5.10
Resolution 2.10 Å R-free 0.251

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.