SAXSdb — 4h9g

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

Elongation factor Tu-A

Thermus thermophilus

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 monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count	Chain A； UniProt 2–406	Not recorded	GNP PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER × 1 MG MAGNESIUM ION × 1 NH4 AMMONIUM ION × 1 SO4 SULFATE ION × 8 14J 5-bromofuran-2-carboxylic acid × 1	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, SITTING DROP；pH 7.6；292 K；1.8M ammonium sulfate, 15% sucrose, 0.1M tris, pH 7.6, VAPOR DIFFUSION, SITTING DROP, temperature 292K	Resolution 1.93 Å R-free 0.184

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 4H9G	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
1AIP EF-TU EF-TS COMPLEX FROM THERMUS THERMOPHILUS Deposited 1997-04-22	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 1–405（405 aa） Chain B 1–405（405 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 6.5；60 MM CACODYLATE, PH 6.5 70 MM AMMONIUM SULFATE 8% PEG 8000	Resolution 3.00 Å R-free 0.289
1AIP EF-TU EF-TS COMPLEX FROM THERMUS THERMOPHILUS Deposited 1997-04-22	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 E 1–405（405 aa） Chain F 1–405（405 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 6.5；60 MM CACODYLATE, PH 6.5 70 MM AMMONIUM SULFATE 8% PEG 8000	Resolution 3.00 Å R-free 0.289
1EXM CRYSTAL STRUCTURE OF THERMUS THERMOPHILUS ELONGATION FACTOR TU (EF-TU) IN COMPLEX WITH THE GTP ANALOGUE GPPNHP. Deposited 2000-05-03	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 2–406（405 aa） Fragment：INTACT WILD-TYPE EF-TU	Not recorded	MG MAGNESIUM ION × 1 GNP PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；20mM Sodium cacodylate, 5mM Magnesium sulfate, 38-44% Ammonium sulfate, 7-10 mg/mL EF-Tu, molar ratio EF-Tu:GppNHp = 1:5, pH 7.0, VAPOR DIFFUSION, HANGING DROP	Resolution 1.70 Å R-free 0.243
4LBV Identifying ligand binding hot spots in proteins using brominated fragments Deposited 2013-06-21	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 3–406（404 aa）	Not recorded	GNP PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER × 1 MG MAGNESIUM ION × 1 NH4 AMMONIUM ION × 1 CL CHLORIDE ION × 1 SO4 SULFATE ION × 8	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.6；292 K；1.8M ammonium sulfate, 15% sucrose, 0.1M Tris-HCl, pH 7.6, VAPOR DIFFUSION, SITTING DROP, temperature 292K	Resolution 2.03 Å R-free 0.193
4LBV Identifying ligand binding hot spots in proteins using brominated fragments Deposited 2013-06-21	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 3–406（404 aa）	Not recorded	GNP PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER × 2 MG MAGNESIUM ION × 2 NH4 AMMONIUM ION × 2 CL CHLORIDE ION × 2 SO4 SULFATE ION × 16	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.6；292 K；1.8M ammonium sulfate, 15% sucrose, 0.1M Tris-HCl, pH 7.6, VAPOR DIFFUSION, SITTING DROP, temperature 292K	Resolution 2.03 Å R-free 0.193
4LBW Identifying ligand binding hot spots in proteins using brominated fragments Deposited 2013-06-21	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 3–406（404 aa）	Not recorded	GNP PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER × 1 MG MAGNESIUM ION × 1 NH4 AMMONIUM ION × 1 SO4 SULFATE ION × 8	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.6；292 K；1.8M ammonium sulfate, 15% sucrose, 0.1M Tris-HCl, pH 7.6, VAPOR DIFFUSION, SITTING DROP, temperature 292K	Resolution 1.74 Å R-free 0.194
4LBW Identifying ligand binding hot spots in proteins using brominated fragments Deposited 2013-06-21	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 3–406（404 aa）	Not recorded	GNP PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER × 2 MG MAGNESIUM ION × 2 NH4 AMMONIUM ION × 2 SO4 SULFATE ION × 16	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.6；292 K；1.8M ammonium sulfate, 15% sucrose, 0.1M Tris-HCl, pH 7.6, VAPOR DIFFUSION, SITTING DROP, temperature 292K	Resolution 1.74 Å R-free 0.194
4LBY Identifying ligand binding hot spots in proteins using brominated fragments Deposited 2013-06-21	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 3–406（404 aa）	Not recorded	GNP PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER × 1 MG MAGNESIUM ION × 1 NH4 AMMONIUM ION × 1 SO4 SULFATE ION × 6	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.6；292 K；1.8M ammonium sulfate, 15% sucrose, 0.1M Tris-HCl, pH 7.6, VAPOR DIFFUSION, SITTING DROP, temperature 292K	Resolution 2.69 Å R-free 0.207
4LBZ Identifying ligand binding hot spots in proteins using brominated fragments Deposited 2013-06-21	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 3–406（404 aa）	Not recorded	GNP PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER × 1 MG MAGNESIUM ION × 1 NH4 AMMONIUM ION × 1 SO4 SULFATE ION × 7	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.6；292 K；1.8M ammonium sulfate, 15% sucrose, 0.1M Tris-HCl, pH 7.6, VAPOR DIFFUSION, SITTING DROP, temperature 292K	Resolution 2.22 Å R-free 0.212
4LBZ Identifying ligand binding hot spots in proteins using brominated fragments Deposited 2013-06-21	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 3–406（404 aa）	Not recorded	GNP PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER × 2 MG MAGNESIUM ION × 2 NH4 AMMONIUM ION × 2 SO4 SULFATE ION × 14	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.6；292 K；1.8M ammonium sulfate, 15% sucrose, 0.1M Tris-HCl, pH 7.6, VAPOR DIFFUSION, SITTING DROP, temperature 292K	Resolution 2.22 Å R-free 0.212
4LC0 Identifying ligand binding hot spots in proteins using brominated fragments Deposited 2013-06-21	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 3–406（404 aa）	Not recorded	GNP PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER × 1 MG MAGNESIUM ION × 1 NH4 AMMONIUM ION × 1 SO4 SULFATE ION × 7	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.6；292 K；1.8M ammonium sulfate, 15% sucrose, 0.1M Tris-HCl, pH 7.6, VAPOR DIFFUSION, SITTING DROP, temperature 292K	Resolution 2.22 Å R-free 0.201
4LC0 Identifying ligand binding hot spots in proteins using brominated fragments Deposited 2013-06-21	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 3–406（404 aa）	Not recorded	GNP PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER × 2 MG MAGNESIUM ION × 2 NH4 AMMONIUM ION × 2 SO4 SULFATE ION × 14	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.6；292 K；1.8M ammonium sulfate, 15% sucrose, 0.1M Tris-HCl, pH 7.6, VAPOR DIFFUSION, SITTING DROP, temperature 292K	Resolution 2.22 Å R-free 0.201

7 other PDB entries and 12 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	EFTU1_THETH
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–405； UniProt 2–406

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	4h9g
Deposition date deposition_date	2012-09-24
Structure title title	Probing EF-Tu with a very small brominated fragment library identifies the CCA pocket
Keywords keywords	P-loop, GTPase, GTP Binding, tRNA Binding, Ribosome Binding, TRANSLATION; TRANSLATION
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	22.45 Å
Radius of gyration Rg (electron density) rg_electron	21.50 Å
Forward intensity I(0) i0	38725000.00
Molecular weight molecular_weight	46061.0 kDa
Excluded volume excluded_volume	56857 Å³
Envelope volume envelope_volume	66322 Å³
Hydration-shell volume shell_volume	25299 Å³
Envelope diameter envelope_diameter	75.7 Å
Shell Rg shell_rg	28.69 Å
Envelope Rg envelope_rg	21.76 Å
Shape Rg shape_rg	21.47 Å
Total Rg total_rg	22.41 Å
Total atoms total_atoms	3218
Residues n_residues	404
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	73.8 Å
Rg (real space) rg_real	22.37 Å
Rg uncertainty (real space) rg_real_error	0.42 Å
I(0) (real space) i0_real	3.8720e+07
I(0) uncertainty (real space) i0_real_error	5.4080e+05
Rg (reciprocal space) rg_reciprocal	22.39 Å
I(0) (reciprocal space) i0_reciprocal	38730000.0000
Solution quality estimate total_estimate	0.8871
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	2
Primary peak position r_peak_primary	26.8 Å
Skewness Skewness skewness	0.244
Kurtosis Kurtosis kurtosis	-0.360
Angular range angular_range	— – 0.3550 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	9534000.0000
Real-space data points n_real_points	67
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.847; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.998; Smooth: 0.988

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (7)

Entity 1 Entity 1 polymer

Description description	Elongation factor Tu-A
Molecular weight formula_weight	44681.8 kDa
EC 编号 ec_number	3.6.5.3
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	3848

AKGEFVRTKPHVNVGTIGHVDHGKTTLTAALTYVAAAENPNVEVKDYGDIDKAPEERARGITINTAHVEYETAKRHYSHVDCPGHADYIKNMITGAAQMDGAILVVSAADGPMPQTREHILLARQVGVPYIVVFMNKVDMVDDPELLDLVEMEVRDLLNQYEFPGDEVPVIRGSALLALEQMHRNPKTRRGENEWVDKIWELLDAIDEYIPTPVRDVDKPFLMPVEDVFTITGRGTVATGRIERGKVKVGDEVEIVGLAPETRKTVVTGVEMHRKTLQEGIAGDNVGVLLRGVSREEVERGQVLAKPGSITPHTKFEASVYVLKKEEGGRHTGFFSGYRPQFYFRTTDVTGVVQLPPGVEMVMPGDNVTFTVELIKPVALEEGLRFAIREGGRTVGAGVVTKILE

来源 Source

来源生物 organism	Thermus thermophilus
NCBI Class编号 ncbi_taxonomy_id	274
宿主生物 host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER
Molecular weight formula_weight	522.2 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 non-polymer

Description description	AMMONIUM ION
Molecular weight formula_weight	18.0 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	8

Entity 6 Entity 6 non-polymer

Description description	5-bromofuran-2-carboxylic acid
Molecular weight formula_weight	191.0 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 7 Entity 7 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	382

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7. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_id	d4h9ga1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.8 — G proteins

Domain ID domain_id	d4h9ga2
Class class	b — All beta proteins
Fold Fold fold	b.43 — Reductase/isomerase/elongation factor common domain
Superfamily Superfamily superfamily	b.43.3 — Translation proteins
Family Family family	b.43.3.0 — automated matches

Domain ID domain_id	d4h9ga3
Class class	b — All beta proteins
Fold Fold fold	b.44 — Elongation factor/aminomethyltransferase common domain
Superfamily Superfamily superfamily	b.44.1 — EF-Tu/eEF-1alpha/eIF2-gamma C-terminal domain
Family Family family	b.44.1.0 — automated matches

CATH v4.4 (3 domains)

Domain ID domain_id	4h9gA01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	4h9gA02
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	30 — Elongation Factor Tu (Ef-tu); domain 3
Homologous superfamily homologous superfamily	10 — Translation factors

Domain ID domain_id	4h9gA03
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	30 — Elongation Factor Tu (Ef-tu); domain 3
Homologous superfamily homologous superfamily	10 — Translation factors

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8. Citations (1)

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Unit-cell length a length_a	147.205 Å
Unit-cell length b length_b	98.627 Å
Unit-cell length c length_c	39.751 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	96.06 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	1.930 Å
Low-resolution limit resolution_low	29.390 Å
R factor r_factor	0.1558
R_work r_work	0.1543
R_free r_free	0.1842

fit	/app/data/saxs_computation/h9/4h9g/4h9g.fit
pddf	/app/data/pr_computation/h9/4h9g/4h9g.pr.out
profile	/app/data/saxs_computation/h9/4h9g/4h9g.dat

Probing EF-Tu with a very small brominated fragment library identifies the CCA pocket