SAXSdb — 5iqn

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1. Protein Identity and Related Structures Protein Identity & Related Structures

Protein FimG

Escherichia coli K-12

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric（2） Consistent with protein copy count	Chain A； UniProt 36–167	Fragment：UNP residues 36-167	Protein FimF × 1 （P08189） CO COBALT (II) ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, SITTING DROP；293 K；MOPS-NaOH pH 6.8 (RT), PEG-1500, CoCl2, NaCl	Resolution 1.00 Å R-free 0.146
2	Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric（2） Consistent with protein copy count	Chain G； UniProt 36–167	Fragment：UNP residues 36-167	Protein FimF × 1 （P08189） CO COBALT (II) ION × 1 EDO 1,2-ETHANEDIOL × 1	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, SITTING DROP；293 K；MOPS-NaOH pH 6.8 (RT), PEG-1500, CoCl2, NaCl	Resolution 1.00 Å R-free 0.146

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB	Difference from Current Entry 5IQN	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
3BFQ Crystal structure of truncated FimG (FimGt) in complex with the donor strand peptide of FimF (DSF) Deposited 2007-11-23	Different construct Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain G 36–167（132 aa） Fragment：sequence database residues 36-167	Not recorded	CO COBALT (II) ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；20 mM Tris/HCl, pH 8.0, 80 mM NaCl, 27.5% PEG 1500, 20 mM cobalt chloride, VAPOR DIFFUSION, SITTING DROP, temperature 293K	Resolution 1.34 Å R-free 0.179
3BFW Crystal structure of truncated FimG (FimGt) in complex with the donor strand peptide of FimF (DSF) Deposited 2007-11-23	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 36–167（132 aa） Fragment：sequence database residues 36-167	Not recorded	YT3 YTTRIUM (III) ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；20 mM Tris/HCl, pH 8.0, 80 mM NaCl, 27.5% PEG 1500, 20 mM yttrium chloride, VAPOR DIFFUSION, SITTING DROP, temperature 293K	Resolution 1.80 Å R-free 0.238
3BFW Crystal structure of truncated FimG (FimGt) in complex with the donor strand peptide of FimF (DSF) Deposited 2007-11-23	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 36–167（132 aa） Fragment：sequence database residues 36-167	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；20 mM Tris/HCl, pH 8.0, 80 mM NaCl, 27.5% PEG 1500, 20 mM yttrium chloride, VAPOR DIFFUSION, SITTING DROP, temperature 293K	Resolution 1.80 Å R-free 0.238
3JWN Complex of FimC, FimF, FimG and FimH Deposited 2009-09-18	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric	Chain G 24–167（144 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.1；293 K；1.6 M potassium chloride, 0.1 M sodium citrate, pH 4.1, VAPOR DIFFUSION, SITTING DROP, temperature 293K	Resolution 2.69 Å R-free 0.272
3JWN Complex of FimC, FimF, FimG and FimH Deposited 2009-09-18	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric	Chain M 24–167（144 aa）	Not recorded	GOL GLYCEROL × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.1；293 K；1.6 M potassium chloride, 0.1 M sodium citrate, pH 4.1, VAPOR DIFFUSION, SITTING DROP, temperature 293K	Resolution 2.69 Å R-free 0.272
4J3O Crystal structure of the FimD usher traversed by the pilus tip complex assembly composed of FimC:FimF:FimG:FimH Deposited 2013-02-06	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric	Chain G 24–167（144 aa） Fragment：UNP residues 24-167	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；298 K；1.6-2.0M sodium formate, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 3.80 Å R-free 0.299
5IQM Crystal structure of the E. coli type 1 pilus subunit FimG (engineered variant with substitution Q134E; N-terminal FimG residues 1-12 truncated) in complex with the donor strand peptide DsF_T4R-T6R-D13N Deposited 2016-03-11	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain G 36–167（132 aa） Fragment：UNP residues 36-167	Not recorded	CO COBALT (II) ION × 3	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；MOPS-NaOH pH 7.0 (RT), PEG-1500, NaCl, CoCl2	Resolution 1.50 Å R-free 0.185
5IQM Crystal structure of the E. coli type 1 pilus subunit FimG (engineered variant with substitution Q134E; N-terminal FimG residues 1-12 truncated) in complex with the donor strand peptide DsF_T4R-T6R-D13N Deposited 2016-03-11	Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 36–167（132 aa） Fragment：UNP residues 36-167	Not recorded	CO COBALT (II) ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；MOPS-NaOH pH 7.0 (RT), PEG-1500, NaCl, CoCl2	Resolution 1.50 Å R-free 0.185
5IQO Crystal structure of the E. coli type 1 pilus subunit FimG (engineered variant with substitutions Q134E and S138E; N-terminal FimG residues 1-12 truncated) in complex with the donor strand peptide DsF_T4R-T6R-D13N Deposited 2016-03-11	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 36–167（132 aa）	Not recorded	CO COBALT (II) ION × 4 EDO 1,2-ETHANEDIOL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；MOPS-NaOH pH 7.6 (RT), PEG-1500, CoCl2, NaCl	Resolution 1.30 Å R-free 0.170
5IQO Crystal structure of the E. coli type 1 pilus subunit FimG (engineered variant with substitutions Q134E and S138E; N-terminal FimG residues 1-12 truncated) in complex with the donor strand peptide DsF_T4R-T6R-D13N Deposited 2016-03-11	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 36–167（132 aa）	Not recorded	CO COBALT (II) ION × 1 1PE PENTAETHYLENE GLYCOL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；MOPS-NaOH pH 7.6 (RT), PEG-1500, CoCl2, NaCl	Resolution 1.30 Å R-free 0.170
6E14 Handover mechanism of the growing pilus by the bacterial outer membrane usher FimD Deposited 2018-07-09	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric	Chain G 11–167（157 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.00 Å
6E15 Handover mechanism of the growing pilus by the bacterial outer membrane usher FimD Deposited 2018-07-09	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric	Chain G 11–167（157 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 5.10 Å
8V3J Structure-Based Engineering of a Highly Immunogenic, Conformationally Stabilized FimH Antigen for a Urinary Tract Infection Vaccine Deposited 2023-11-28	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric	Chain A 24–37（14 aa）	Mutation：N7S,G15A,G16A,V27A,N70S,N228Q	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.5；293 K；0.1 M Sodium Acetate (pH 4.5), 25% (w/v) PEG 3350	Resolution 1.90 Å R-free 0.238
8V3J Structure-Based Engineering of a Highly Immunogenic, Conformationally Stabilized FimH Antigen for a Urinary Tract Infection Vaccine Deposited 2023-11-28	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric	Chain B 24–37（14 aa）	Mutation：N7S,G15A,G16A,V27A,N70S,N228Q	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.5；293 K；0.1 M Sodium Acetate (pH 4.5), 25% (w/v) PEG 3350	Resolution 1.90 Å R-free 0.238
8V3J Structure-Based Engineering of a Highly Immunogenic, Conformationally Stabilized FimH Antigen for a Urinary Tract Infection Vaccine Deposited 2023-11-28	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 3 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric	Chain C 24–37（14 aa）	Mutation：N7S,G15A,G16A,V27A,N70S,N228Q	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.5；293 K；0.1 M Sodium Acetate (pH 4.5), 25% (w/v) PEG 3350	Resolution 1.90 Å R-free 0.238
8V3J Structure-Based Engineering of a Highly Immunogenic, Conformationally Stabilized FimH Antigen for a Urinary Tract Infection Vaccine Deposited 2023-11-28	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 4 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric	Chain D 24–37（14 aa）	Mutation：N7S,G15A,G16A,V27A,N70S,N228Q	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.5；293 K；0.1 M Sodium Acetate (pH 4.5), 25% (w/v) PEG 3350	Resolution 1.90 Å R-free 0.238
8V93 Cryo-EM structure of E. coli FimH lectin domain bound to Fabs 329-2 and 454-3 Deposited 2023-12-07	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Heteromer；Protein × 5 PDB declaration: pentameric	Chain D 24–37（14 aa）	Mutation：N7S, G15A, G16A, V27A, N70S, N228Q within FimH	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.12 Å
9D6F Cryo-EM structure of E. coli FimH lectin domain bound to Fabs 440-2 and 454-3 Deposited 2024-08-15	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Heteromer；Protein × 5 PDB declaration: pentameric	Chain D 24–37（14 aa）	Mutation：N7S, G15A, G16A, V27A, N70S, N228Q within FimH	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.24 Å
9FY9 Cryo-EM structure of the type 1 chaperone-usher pilus FimD-tip complex (FimDHGFC) - Conformer 1 Deposited 2024-07-03	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric	Chain G 24–167（144 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE-PROPANE	Resolution 3.30 Å
9ME4 Antibody fragments from mAb475 and mAb824 bound to the adhesin protein FimH Deposited 2024-12-06	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric	Chain G 1–167（167 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.20 Å
9ME5 Antibody fragments from mAb824 and mAb926 bound to the adhesin protein FimH Deposited 2024-12-06	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric	Chain G 1–167（167 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.10 Å
9PTM Antibody fragment from mAb824 bound to the adhesin protein FimH. Deposited 2025-07-29	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain G 1–167（167 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.40 Å

15 other PDB entries and 22 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	FIMG_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–132； UniProt 36–167 Author chain G； PDBConstruct 1–132； UniProt 36–167

Protein FimF

OrganismNot specified

UniProt P08189

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric（2） Consistent with protein copy count	Chain B； UniProt 25–34	Fragment：UNP residues 35-34	Protein FimG × 1 （P08190） CO COBALT (II) ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, SITTING DROP；293 K；MOPS-NaOH pH 6.8 (RT), PEG-1500, CoCl2, NaCl	Resolution 1.00 Å R-free 0.146
2	Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric（2） Consistent with protein copy count	Chain F； UniProt 25–34	Fragment：UNP residues 35-34	Protein FimG × 1 （P08190） CO COBALT (II) ION × 1 EDO 1,2-ETHANEDIOL × 1	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, SITTING DROP；293 K；MOPS-NaOH pH 6.8 (RT), PEG-1500, CoCl2, NaCl	Resolution 1.00 Å R-free 0.146

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB	Difference from Current Entry 5IQN	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
2JMR NMR structure of the E. coli type 1 pilus subunit FimF Deposited 2006-11-29	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 23–176（154 aa）	Not recorded	No recorded non-water small molecule	SOLUTION NMR NMR measurement conditions pH 6.8；310.1 K NMR sample composition 1.4 mM [U-99% 13C; U-99% 15N] FimF, 25 mM sodium phosphate, 100 mM sodium chloride, 0.05 % sodium azide, 5 % D2O, 95% H2O/5% D2O \| 95% H2O/5% D2O	Resolution not provided
3BFQ Crystal structure of truncated FimG (FimGt) in complex with the donor strand peptide of FimF (DSF) Deposited 2007-11-23	Different construct Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain F 23–37（15 aa） Fragment：sequence database residues 23-37	Not recorded	CO COBALT (II) ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；20 mM Tris/HCl, pH 8.0, 80 mM NaCl, 27.5% PEG 1500, 20 mM cobalt chloride, VAPOR DIFFUSION, SITTING DROP, temperature 293K	Resolution 1.34 Å R-free 0.179
3BFW Crystal structure of truncated FimG (FimGt) in complex with the donor strand peptide of FimF (DSF) Deposited 2007-11-23	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 23–37（15 aa） Fragment：sequence database residues 23-37	Not recorded	YT3 YTTRIUM (III) ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；20 mM Tris/HCl, pH 8.0, 80 mM NaCl, 27.5% PEG 1500, 20 mM yttrium chloride, VAPOR DIFFUSION, SITTING DROP, temperature 293K	Resolution 1.80 Å R-free 0.238
3BFW Crystal structure of truncated FimG (FimGt) in complex with the donor strand peptide of FimF (DSF) Deposited 2007-11-23	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain D 23–37（15 aa） Fragment：sequence database residues 23-37	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；20 mM Tris/HCl, pH 8.0, 80 mM NaCl, 27.5% PEG 1500, 20 mM yttrium chloride, VAPOR DIFFUSION, SITTING DROP, temperature 293K	Resolution 1.80 Å R-free 0.238
3BWU Crystal structure of the ternary complex of FimD (N-Terminal Domain, FimDN) with FimC and the N-terminally truncated pilus subunit FimF (FimFt) Deposited 2008-01-10	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain F 35–176（142 aa） Fragment：N-terminal truncation construct of pilus subunit fimF, Residues 13-154	Not recorded	EDO 1,2-ETHANEDIOL × 13 PEG DI(HYDROXYETHYL)ETHER × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；277 K；20 mM Tris/HCl pH 8.0, 20% PEG 8000, 50 mM succinic acid pH 4.0, VAPOR DIFFUSION, SITTING DROP, temperature 277K	Resolution 1.76 Å R-free 0.212
3JWN Complex of FimC, FimF, FimG and FimH Deposited 2009-09-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric	Chain E 23–176（154 aa） Fragment：UNP residues 23-176 Chain F 23–176（154 aa） Fragment：UNP residues 23-176	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.1；293 K；1.6 M potassium chloride, 0.1 M sodium citrate, pH 4.1, VAPOR DIFFUSION, SITTING DROP, temperature 293K	Resolution 2.69 Å R-free 0.272
3JWN Complex of FimC, FimF, FimG and FimH Deposited 2009-09-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric	Chain K 23–176（154 aa） Fragment：UNP residues 23-176 Chain L 23–176（154 aa） Fragment：UNP residues 23-176	Not recorded	GOL GLYCEROL × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.1；293 K；1.6 M potassium chloride, 0.1 M sodium citrate, pH 4.1, VAPOR DIFFUSION, SITTING DROP, temperature 293K	Resolution 2.69 Å R-free 0.272
4J3O Crystal structure of the FimD usher traversed by the pilus tip complex assembly composed of FimC:FimF:FimG:FimH Deposited 2013-02-06	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric	Chain F 23–176（154 aa） Fragment：UNP residues 21-176	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；298 K；1.6-2.0M sodium formate, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 3.80 Å R-free 0.299
5IQM Crystal structure of the E. coli type 1 pilus subunit FimG (engineered variant with substitution Q134E; N-terminal FimG residues 1-12 truncated) in complex with the donor strand peptide DsF_T4R-T6R-D13N Deposited 2016-03-11	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain F 23–37（15 aa） Fragment：UNP residues 23-37	Not recorded	CO COBALT (II) ION × 3	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；MOPS-NaOH pH 7.0 (RT), PEG-1500, NaCl, CoCl2	Resolution 1.50 Å R-free 0.185
5IQM Crystal structure of the E. coli type 1 pilus subunit FimG (engineered variant with substitution Q134E; N-terminal FimG residues 1-12 truncated) in complex with the donor strand peptide DsF_T4R-T6R-D13N Deposited 2016-03-11	Different construct Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 23–37（15 aa） Fragment：UNP residues 23-37	Not recorded	CO COBALT (II) ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；MOPS-NaOH pH 7.0 (RT), PEG-1500, NaCl, CoCl2	Resolution 1.50 Å R-free 0.185
5IQO Crystal structure of the E. coli type 1 pilus subunit FimG (engineered variant with substitutions Q134E and S138E; N-terminal FimG residues 1-12 truncated) in complex with the donor strand peptide DsF_T4R-T6R-D13N Deposited 2016-03-11	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 23–37（15 aa） Fragment：UNP residues 23-37	Not recorded	CO COBALT (II) ION × 4 EDO 1,2-ETHANEDIOL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；MOPS-NaOH pH 7.6 (RT), PEG-1500, CoCl2, NaCl	Resolution 1.30 Å R-free 0.170
5IQO Crystal structure of the E. coli type 1 pilus subunit FimG (engineered variant with substitutions Q134E and S138E; N-terminal FimG residues 1-12 truncated) in complex with the donor strand peptide DsF_T4R-T6R-D13N Deposited 2016-03-11	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain D 23–37（15 aa） Fragment：UNP residues 23-37	Not recorded	CO COBALT (II) ION × 1 1PE PENTAETHYLENE GLYCOL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；MOPS-NaOH pH 7.6 (RT), PEG-1500, CoCl2, NaCl	Resolution 1.30 Å R-free 0.170
6E14 Handover mechanism of the growing pilus by the bacterial outer membrane usher FimD Deposited 2018-07-09	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric	Chain F 22–176（155 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.00 Å
6E15 Handover mechanism of the growing pilus by the bacterial outer membrane usher FimD Deposited 2018-07-09	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric	Chain F 22–176（155 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 5.10 Å
9BOG Structural basis for adhesin secretion by the outer-membrane usher in type 1 pili Deposited 2024-05-03	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain F 23–176（154 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.99 Å
9FX0 Cryo-EM structure of the type 1 pilus tip-to-rod transition Deposited 2024-07-01	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 7 PDB declaration: heptameric	Chain F 23–176（154 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE-PROPANE	Resolution 3.10 Å
9FY9 Cryo-EM structure of the type 1 chaperone-usher pilus FimD-tip complex (FimDHGFC) - Conformer 1 Deposited 2024-07-03	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric	Chain F 23–176（154 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE-PROPANE	Resolution 3.30 Å

13 other PDB entries and 17 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	FIMF_ECOLI
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–10； UniProt 25–34 Author chain F； PDBConstruct 1–10； UniProt 25–34

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	5iqn
Deposition date deposition_date	2016-03-11
Structure title title	Crystal structure of the E. coli type 1 pilus subunit FimG (engineered variant with substitution Q134E; N-terminal FimG residues 1-12 truncated) in complex with the donor strand peptide DsF_SRIRIRGYVR
Keywords keywords	Complex, Protein, FimGt, cell adhesion; CELL ADHESION
Experimental Method method	X-RAY DIFFRACTION

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3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier	21.34 Å
Radius of gyration Rg (electron density) rg_electron	20.39 Å
Forward intensity I(0) i0	17666500.00
Molecular weight molecular_weight	30047.0 kDa
Excluded volume excluded_volume	36861 Å³
Envelope volume envelope_volume	44348 Å³
Hydration-shell volume shell_volume	18611 Å³
Envelope diameter envelope_diameter	68.8 Å
Shell Rg shell_rg	25.95 Å
Envelope Rg envelope_rg	20.38 Å
Shape Rg shape_rg	20.36 Å
Total Rg total_rg	21.20 Å
Total atoms total_atoms	4139
Residues n_residues	284
Spherical-harmonic order n_harmonics	20
q range q_range	— – 0.5000 Å⁻¹
Data points n_points	101
Shell type shell_type	directional
Solvent electron density solvent_density	0.3340 e/Å³
Shell contrast contrast_shell	0.0300 e/Å³
CRYSOL version crysol_version	4.1.3

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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax	67.2 Å
Rg (real space) rg_real	21.26 Å
Rg uncertainty (real space) rg_real_error	0.44 Å
I(0) (real space) i0_real	1.7670e+07
I(0) uncertainty (real space) i0_real_error	2.4640e+05
Rg (reciprocal space) rg_reciprocal	21.28 Å
I(0) (reciprocal space) i0_reciprocal	17670000.0000
Solution quality estimate total_estimate	0.9085
Solution quality rating solution_quality	EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks	2
Primary peak position r_peak_primary	23.7 Å
Skewness Skewness skewness	0.156
Kurtosis Kurtosis kurtosis	-0.607
Angular range angular_range	— – 0.3700 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	3477000.0000
Real-space data points n_real_points	69
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.942; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.997; Smooth: 0.983

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Description description	Protein FimG
Molecular weight formula_weight	13666.8 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,G
Atom count atom_count	5214

AKPCTVSTTNATVDLGDLYSFSLMSAGAASAWHDVALELTNCPVGTSRVTASFSGAADSTGYYKNQGTAQNIQLELQDDSGNTLNTGATKTVQVDDSSQSAHFPLQVRALTVNGGATQGTIEAVISITYTYS

来源 Source

来源生物 organism	Escherichia coli K-12
NCBI Class编号 ncbi_taxonomy_id	83333
宿主生物 host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	Protein FimF
Molecular weight formula_weight	1279.5 kDa
Source method src_method	syn
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B,F

SRIRIRGYVR

Entity 3 Entity 3 non-polymer

Description description	COBALT (II) ION
Molecular weight formula_weight	58.9 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 non-polymer

Description description	1,2-ETHANEDIOL
Molecular weight formula_weight	62.1 kDa
Source method src_method	nat
Copy count entity_count	1

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	486

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7. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	5iqnA00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	1090 — Fimbrial-type adhesion domain

Domain ID domain_id	5iqnG00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	1090 — Fimbrial-type adhesion domain

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8. Citations (1)

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Unit-cell length a length_a	25.680 Å
Unit-cell length b length_b	52.880 Å
Unit-cell length c length_c	83.140 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	98.71 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	1.000 Å
Low-resolution limit resolution_low	25.384 Å
R factor r_factor	0.1193
R_work r_work	0.1180
R_free r_free	0.1460

fit	/app/data/saxs_computation/iq/5iqn/5iqn.fit
pddf	/app/data/pr_computation/iq/5iqn/5iqn.pr.out
profile	/app/data/saxs_computation/iq/5iqn/5iqn.dat

Crystal structure of the E. coli type 1 pilus subunit FimG (engineered variant with substitution Q134E; N-terminal FimG residues 1-12 truncated) in complex with the donor strand peptide DsF_SRIRIRGYVR

1. Protein Identity and Related Structures Protein Identity & Related Structures

Protein FimG

State in the Current Structure

Other States of the Same Protein in the Database

Protein FimF

State in the Current Structure

Other States of the Same Protein in the Database

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

2. Structure Basics 2. Structure Basics

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

5. Crystallography and Experiment 5. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

6. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Polymer Polymer

来源 Source

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

7. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

8. Citations (1)

9. Files and Curves (10)

Files (7)

Curves (3)