SAXSdb — 2f3g

▼

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

GLUCOSE-SPECIFIC PHOSPHOCARRIER

OrganismNot specified

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 homooligomer Homooligomer Protein × 2 PDB declaration: dimeric（2） Consistent with protein copy count	Chain A； UniProt 1–168 Chain B； UniProt 1–168	Not recorded	No other associated polymer	X-RAY DIFFRACTION X-ray crystallization conditions：pH 8.5；30% PEG 4000, 0.2M MGCL2, 0.1M TRIS, PH 8.5 4 DEGREES	Resolution 2.13 Å

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 2F3G	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
1F3G THREE-DIMENSIONAL STRUCTURE OF THE ESCHERICHIA COLI PHOSPHOCARRIER PROTEIN III GLC Deposited 1991-08-28	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain A 8–168（161 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.10 Å
1F3Z IIAGLC-ZN COMPLEX Deposited 1997-10-09	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 8–168（161 aa）	Not recorded	ZN ZINC ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions pH 8.5；0.1-0.3 M SODIUM ACETATE, 1MM ZINC ACETATE, 0.1 M TRIS BUFFER PH 8.5	Resolution 1.98 Å
1GGR COMPLEX OF ENZYME IIAGLC AND THE HISTIDINE-CONTAINING PHOSPHOCARRIER PROTEIN HPR FROM ESCHERICHIA COLI NMR, RESTRAINED REGULARIZED MEAN STRUCTURE Deposited 2000-09-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 1–168（168 aa）	Not recorded	PO3 PHOSPHITE ION × 1	SOLUTION NMR NMR measurement conditions pH 7.1；308 K；Ionic strength (raw mmCIF value) 10 mM SODIUM PHOSPHATE	Resolution not provided
1GLA STRUCTURE OF THE REGULATORY COMPLEX OF ESCHERICHIA COLI IIIGLC WITH GLYCEROL KINASE Deposited 1992-10-28	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain F 1–168（168 aa）	Not recorded	GOL GLYCEROL × 4	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.60 Å
1GLB STRUCTURE OF THE REGULATORY COMPLEX OF ESCHERICHIA COLI IIIGLC WITH GLYCEROL KINASE Deposited 1992-10-28	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain F 1–168（168 aa）	Not recorded	ADP ADENOSINE-5'-DIPHOSPHATE × 4 GOL GLYCEROL × 4	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.60 Å
1GLC CATION PROMOTED ASSOCIATION (CPA) OF A REGULATORY AND TARGET PROTEIN IS CONTROLLED BY PHOSPHORYLATION Deposited 1994-03-07	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain F 1–168（168 aa）	Not recorded	ZN ZINC ION × 4 MG MAGNESIUM ION × 4 G3H GLYCERALDEHYDE-3-PHOSPHATE × 4 ADP ADENOSINE-5'-DIPHOSPHATE × 4	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.65 Å
1GLC CATION PROMOTED ASSOCIATION (CPA) OF A REGULATORY AND TARGET PROTEIN IS CONTROLLED BY PHOSPHORYLATION Deposited 1994-03-07	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain F 1–168（168 aa）	Not recorded	ZN ZINC ION × 2 MG MAGNESIUM ION × 2 G3H GLYCERALDEHYDE-3-PHOSPHATE × 2 ADP ADENOSINE-5'-DIPHOSPHATE × 2	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.65 Å
1GLC CATION PROMOTED ASSOCIATION (CPA) OF A REGULATORY AND TARGET PROTEIN IS CONTROLLED BY PHOSPHORYLATION Deposited 1994-03-07	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain F 1–168（168 aa）	Not recorded	ZN ZINC ION × 2 MG MAGNESIUM ION × 2 G3H GLYCERALDEHYDE-3-PHOSPHATE × 2 ADP ADENOSINE-5'-DIPHOSPHATE × 2	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.65 Å
1GLD CATION PROMOTED ASSOCIATION (CPA) OF A REGULATORY AND TARGET PROTEIN IS CONTROLLED BY PHOSPHORYLATION Deposited 1994-03-07	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain F 1–168（168 aa）	Not recorded	MN MANGANESE (II) ION × 4 G3H GLYCERALDEHYDE-3-PHOSPHATE × 4 ADP ADENOSINE-5'-DIPHOSPHATE × 4	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.93 Å
1GLE CATION PROMOTED ASSOCIATION (CPA) OF A REGULATORY AND TARGET PROTEIN IS CONTROLLED BY PHOSPHORYLATION Deposited 1994-03-07	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain F 1–168（168 aa）	Not recorded	ZN ZINC ION × 8 G3H GLYCERALDEHYDE-3-PHOSPHATE × 4 ADP ADENOSINE-5'-DIPHOSPHATE × 4	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.94 Å
1GLE CATION PROMOTED ASSOCIATION (CPA) OF A REGULATORY AND TARGET PROTEIN IS CONTROLLED BY PHOSPHORYLATION Deposited 1994-03-07	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain F 1–168（168 aa）	Not recorded	ZN ZINC ION × 4 G3H GLYCERALDEHYDE-3-PHOSPHATE × 2 ADP ADENOSINE-5'-DIPHOSPHATE × 2	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.94 Å
1GLE CATION PROMOTED ASSOCIATION (CPA) OF A REGULATORY AND TARGET PROTEIN IS CONTROLLED BY PHOSPHORYLATION Deposited 1994-03-07	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain F 1–168（168 aa）	Not recorded	ZN ZINC ION × 4 G3H GLYCERALDEHYDE-3-PHOSPHATE × 2 ADP ADENOSINE-5'-DIPHOSPHATE × 2	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.94 Å
1O2F COMPLEX OF ENZYME IIAGLC AND IIBGLC PHOSPHOCARRIER PROTEIN HPR FROM ESCHERICHIA COLI NMR, RESTRAINED REGULARIZED MEAN STRUCTURE Deposited 2003-03-11	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 1–168（168 aa）	Not recorded	PO3 PHOSPHITE ION × 1	SOLUTION NMR NMR measurement conditions pH 7；308 K；Ionic strength (raw mmCIF value) 10 mM SODIUM PHOSPHATE	Resolution not provided
2MP0 Protein Phosphorylation upon a Fleeting Encounter Deposited 2014-05-08	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 2–169（168 aa）	Not recorded	PO3 PHOSPHITE ION × 1	SOLUTION NMR NMR measurement conditions pH 7.4；313.4 K NMR sample composition 0.5 mM [U-99% 15N] N-terminal Domain of Enzyme I-1, 0.5 mM [U-99% 15N] Enzyme II of Glucose-2, 90% H2O/10% D2O \| 90% H2O/10% D2O NMR sample composition 1-14 mM [U-100% 1H; U-100% 12C; U-99%1 5N] N-terminal Domain of Enzyme I-3, 1-14 mM [U-99% 15N] EIN EIIAGlc-4, 1-14 mM EIN-5, 90% H2O/10% D2O \| 90% H2O/10% D2O NMR sample composition 1.4-1.5 mM [U-100% 2H; U-100% 12C; U-99% 15N] N-terminal Domain of Enzyme I-6, 90% H2O/10% D2O \| 90% H2O/10% D2O	Resolution not provided
4JBW Crystal structure of E. coli maltose transporter MalFGK2 in complex with its regulatory protein EIIAglc Deposited 2013-02-20	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric	Chain M 1–169（169 aa） Chain N 1–169（169 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	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric	Chain O 1–169（169 aa） Chain P 1–169（169 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

11 other PDB entries and 16 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	PTGA_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–168； UniProt 1–168 Author chain B； PDBConstruct 1–168； UniProt 1–168

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.

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id	2f3g
Deposition date deposition_date	1997-10-14
Structure title title	IIAGLC CRYSTAL FORM III
Keywords keywords	PHOSPHOTRANSFERASE, SIGNAL TRANSDUCTION, PHOSPHOCARRIER; PHOSPHOTRANSFERASE
Experimental Method method	X-RAY DIFFRACTION

▼

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

Radius of gyration Rg (Guinier) rg_guinier	20.53 Å
Radius of gyration Rg (electron density) rg_electron	19.45 Å
Forward intensity I(0) i0	16380100.00
Molecular weight molecular_weight	32289.0 kDa
Excluded volume excluded_volume	41246 Å³
Envelope volume envelope_volume	47098 Å³
Hydration-shell volume shell_volume	20261 Å³
Envelope diameter envelope_diameter	62.9 Å
Shell Rg shell_rg	25.58 Å
Envelope Rg envelope_rg	19.43 Å
Shape Rg shape_rg	19.42 Å
Total Rg total_rg	20.45 Å
Total atoms total_atoms	2274
Residues n_residues	300
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

▼

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

Maximum dimension Dmax dmax	63.1 Å
Rg (real space) rg_real	20.43 Å
Rg uncertainty (real space) rg_real_error	0.41 Å
I(0) (real space) i0_real	1.6380e+07
I(0) uncertainty (real space) i0_real_error	2.0430e+05
Rg (reciprocal space) rg_reciprocal	20.45 Å
I(0) (reciprocal space) i0_reciprocal	16380000.0000
Solution quality estimate total_estimate	0.8258
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	3
Primary peak position r_peak_primary	25.6 Å
Skewness Skewness skewness	0.190
Kurtosis Kurtosis kurtosis	-0.514
Angular range angular_range	— – 0.3850 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	4804000.0000
Real-space data points n_real_points	70
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.915; Stabil: 0.997; Sysdev: 1.000; Positv: 1.000; Valcen: 0.997; Smooth: 0.000

▶

5. Crystallography and Experiment 5. Crystallography & Experiment

▶

6. Entities and Polymers Entities & Polymers (2)

▼

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d2f3ga_
Class class	b — All beta proteins
Fold Fold fold	b.84 — Barrel-sandwich hybrid
Superfamily Superfamily superfamily	b.84.3 — Duplicated hybrid motif
Family Family family	b.84.3.1 — Glucose permease-like

Domain ID domain_id	d2f3gb_
Class class	b — All beta proteins
Fold Fold fold	b.84 — Barrel-sandwich hybrid
Superfamily Superfamily superfamily	b.84.3 — Duplicated hybrid motif
Family Family family	b.84.3.1 — Glucose permease-like

CATH v4.4 (2 domains)

Domain ID domain_id	2f3gA00
Class class	2 — Mainly Beta
Architecture architecture	70 — Distorted Sandwich
Topology topology	70 — Glucose Permease (Domain IIA)
Homologous superfamily homologous superfamily	10 — Glucose Permease (Domain IIA)

Domain ID domain_id	2f3gB00
Class class	2 — Mainly Beta
Architecture architecture	70 — Distorted Sandwich
Topology topology	70 — Glucose Permease (Domain IIA)
Homologous superfamily homologous superfamily	10 — Glucose Permease (Domain IIA)

▶

8. Citations (1)

▶

Unit-cell length a length_a	60.040 Å
Unit-cell length b length_b	70.230 Å
Unit-cell length c length_c	74.310 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.130 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	—
R_work r_work	0.1690
R_free r_free	—

Description description	GLUCOSE-SPECIFIC PHOSPHOCARRIER
Molecular weight formula_weight	18141.8 kDa
EC 编号 ec_number	2.7.1.69
Source method src_method	nat
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	2333

IIAGLC CRYSTAL FORM III

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

GLUCOSE-SPECIFIC PHOSPHOCARRIER

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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 water

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

8. Citations (1)

9. Files and Curves (10)

Files (7)

Curves (3)

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	59

fit	/app/data/saxs_computation/f3/2f3g/2f3g.fit
pddf	/app/data/pr_computation/f3/2f3g/2f3g.pr.out
profile	/app/data/saxs_computation/f3/2f3g/2f3g.dat