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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：P68183 New Search
9PDB entries
11Biological assembly
11chain/assembly records
Main Difference Dimensions in This Set
Different construct 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
2R6G The Crystal Structure of the E. coli Maltose Transporter Deposited 2007-09-05 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain G 1–296（296 aa）
Not recorded ATP ADENOSINE-5'-TRIPHOSPHATE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；293 K；27% PEG 400, 500mM NaCl, 100mM Sodium Hepes pH 7.5, 10mM betaine hydrochloride, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.80 Å R-free 0.271
3FH6 Crystal structure of the resting state maltose transporter from E. coli Deposited 2008-12-08 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain G 1–296（296 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；293 K；11.5 % PEG 4000, 0.1M ADA pH 6.5, 0.1 M NaCl, 0.1 M Li2SO4, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 4.50 Å R-free 0.363
3FH6 Crystal structure of the resting state maltose transporter from E. coli Deposited 2008-12-08 Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain I 1–296（296 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；293 K；11.5 % PEG 4000, 0.1M ADA pH 6.5, 0.1 M NaCl, 0.1 M Li2SO4, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 4.50 Å R-free 0.363
3PUV Crystal Structure of an outward-facing MBP-Maltose transporter complex bound to ADP-VO4 Deposited 2010-12-06 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain G 1–296（296 aa）
Not recorded PGV (1R)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL (11E)-OCTADEC-11-ENOATE × 10 UMQ UNDECYL-MALTOSIDE × 1 MG MAGNESIUM ION × 2 ADP ADENOSINE-5'-DIPHOSPHATE × 2 VO4 VANADATE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；293 K；27% PEG 400, 0.1M HEPES, 10 mM magnesium chloride, 50 mM sodium chloride, VAPOR DIFFUSION, SITTING DROP, temperature 293K, pH 7.5
Resolution 2.40 Å R-free 0.253
3PUW Crystal Structure of an outward-facing MBP-Maltose transporter complex bound to ADP-AlF4 Deposited 2010-12-06 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain G 1–296（296 aa）
Not recorded PGV (1R)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL (11E)-OCTADEC-11-ENOATE × 10 UMQ UNDECYL-MALTOSIDE × 1 MG MAGNESIUM ION × 2 ADP ADENOSINE-5'-DIPHOSPHATE × 2 ALF TETRAFLUOROALUMINATE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；293 K；27 % PEG 400, 0.1 M HEPES, 10 mM magnesium chloride, 50 mM sodium chloride, VAPOR DIFFUSION, SITTING DROP, temperature 293K, pH 7.5
Resolution 2.30 Å R-free 0.255
3PUX Crystal Structure of an outward-facing MBP-Maltose transporter complex bound to ADP-BeF3 Deposited 2010-12-06 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain G 1–296（296 aa）
Not recorded UMQ UNDECYL-MALTOSIDE × 1 PGV (1R)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL (11E)-OCTADEC-11-ENOATE × 10 MG MAGNESIUM ION × 2 ADP ADENOSINE-5'-DIPHOSPHATE × 2 BEF BERYLLIUM TRIFLUORIDE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7.5；293 K；27% PEG 400, 0.1 M HEPES, 10 mM magnesium chloride, 50 mM sodium chloride, VAPOR DIFFUSION, SITTING DROP, temperature 293K, pH 7.5
Resolution 2.30 Å R-free 0.265
3RLF Crystal structure of the maltose-binding protein/maltose transporter complex in an outward-facing conformation bound to MgAMPPNP Deposited 2011-04-19 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain G 1–296（296 aa）
Not recorded UMQ UNDECYL-MALTOSIDE × 1 PGV (1R)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL (11E)-OCTADEC-11-ENOATE × 4 MG MAGNESIUM ION × 2 ANP PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；293 K；28% PEG 4000, 0.1M sodium hepes pH 7.5, 0.2M sodium chloride, 0.05M magnesium chloride, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.20 Å R-free 0.254
4JBW Crystal structure of E. coli maltose transporter MalFGK2 in complex with its regulatory protein EIIAglc Deposited 2013-02-20 Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain G 1–296（296 aa）
Not recorded PGV (1R)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL (11E)-OCTADEC-11-ENOATE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.6；295 K；13% PEG monomethylether 2000, 100mM Sodium cacodylate pH 5.6, 100mM Non Detergent Sulfobetaine (NDSB-256), VAPOR DIFFUSION, SITTING DROP, temperature 295K
Resolution 3.91 Å R-free 0.281
4JBW Crystal structure of E. coli maltose transporter MalFGK2 in complex with its regulatory protein EIIAglc Deposited 2013-02-20 Assembly 2 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain I 1–296（296 aa）
Not recorded PGV (1R)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL (11E)-OCTADEC-11-ENOATE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.6；295 K；13% PEG monomethylether 2000, 100mM Sodium cacodylate pH 5.6, 100mM Non Detergent Sulfobetaine (NDSB-256), VAPOR DIFFUSION, SITTING DROP, temperature 295K
Resolution 3.91 Å R-free 0.281
9BCR Cryo-EM structure of a bacterial prototype ATP-binding cassette transporter MalFGK2. Deposited 2024-04-09 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain I 2–287（286 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.26 Å
9NQJ Cryo-EM structure of a bacterial prototype ATP-binding cassette transporter MalFGK2. Deposited 2025-03-12 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain G 1–296（296 aa）
Not recorded MG MAGNESIUM ION × 2 ADP ADENOSINE-5'-DIPHOSPHATE × 2 VO4 VANADATE ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.34 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.