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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：Q815N5 New Search
4PDB entries
4Biological assembly
4chain/assembly records
Main Difference Dimensions in This Set
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
21ZD Crystal structure of the petrobactin-binding protein FatB from Bacillus cereus in the apo-form Deposited 2026-01-04 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 40–338（299 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；289 K；0.15M Potassium thiocyanate, 30% (w/v) PEG monomethyl ether 2000
Resolution 1.91 Å R-free 0.258
21ZE Crystal structure of the petrobactin-binding protein FatB from Bacillus cereus complexed with ferric petrobactin Deposited 2026-01-04 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 40–338（299 aa）
Not recorded F8W 4-[4-[3-[[3,4-bis(oxidanyl)phenyl]carbonylamino]propylamino]butylamino]-2-[2-[4-[3-[[3,4-bis(oxidanyl)phenyl]carbonylamino]propylamino]butylamino]-2-oxidanylidene-ethyl]-2-oxidanyl-4-oxidanylidene-butanoic acid × 1 FE FE (III) ION × 1 EDO 1,2-ETHANEDIOL × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；289 K；10% (v/v) 2-propanol, 0.1 M BICINE, pH 8.5, 36% (w/v) PEG 1000
Resolution 1.78 Å R-free 0.217
21ZF Crystal structure of the petrobactin-binding protein FatB from Bacillus cereus complexed with ferric petrobactin photoproduct, FePBv Deposited 2026-01-04 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 40–338（299 aa）
Not recorded A1MDH ~{N}-[3-[4-[[5-[4-[3-[[3,4-bis(oxidanyl)phenyl]carbonylamino]propylamino]butylamino]-5-oxidanyl-3-oxidanylidene-pent-4-enoyl]amino]butylamino]propyl]-3,4-bis(oxidanyl)benzamide × 1 FE FE (III) ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；289 K；10% (v/v) 2-propanol, 0.1 M BICINE, pH 8.5, 28% (w/v) PEG 1000
Resolution 1.58 Å R-free 0.188
21ZG Crystal structure of the petrobactin-binding protein FatB from Bacillus cereus complexed with ferric siderophore mimic, Fe(3,4-DHB)2 Deposited 2026-01-04 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 40–338（299 aa）
Not recorded DHB 3,4-DIHYDROXYBENZOIC ACID × 2 FE FE (III) ION × 1 EDO 1,2-ETHANEDIOL × 1 IPA ISOPROPYL ALCOHOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；289 K；15% (v/v) 2-propanol, 0.1 M MES monohydrate, pH 6.0, 30% (w/v) PEG monomethyl ether 2000
Resolution 1.40 Å R-free 0.173

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.