SAXSdb — 1n75

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

Glutamyl-tRNA synthetase

Thermus thermophilus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	MAGNESIUM ION × 1 ADENOSINE-5'-TRIPHOSPHATE × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SYE_THET8
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–468； UniProt 1–468

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	1n75
Deposition date deposition_date	2002-11-12
Structure title title	Crystal structure of Thermus thermophilus glutamyl-tRNA synthetase complexed with ATP.
Keywords keywords	ERS/ATP, Glutamyl-tRNA synthetase, RIKEN Structural Genomics/Proteomics Initiative, RSGI, Structural Genomics, ligase; LIGASE
Experimental Method method	X-RAY DIFFRACTION

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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

1n75__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1n75__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1n75__assembly_1__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	31.03 Å
Rg (electron density)	31.29 Å
Total Rg	31.59 Å
Atom count	3846
Residues	468
Excluded volume	68397 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1n75__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Description description	Glutamyl-tRNA synthetase
Molecular weight formula_weight	53988.7 kDa
EC 编号 ec_number	6.1.1.17
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	4193

MVVTRIAPSPTGDPHVGTAYIALFNYAWARRNGGRFIVRIEDTDRARYVPGAEERILAALKWLGLSYDEGPDVGGPHGPYRQSERLPLYQKYAEELLKRGWAYRAFETPEELEQIRKEKGGYDGRARNIPPEEAEERARRGEPHVIRLKVPRPGTTEVKDELRGVVVYDNQEIPDVVLLKSDGYPTYHLANVVDDHLMGVTDVIRAEEWLVSTPIHVLLYRAFGWEAPRFYHMPLLRNPDKTKISKRKSHTSLDWYKAEGFLPEALRNYLCLMGFSMPDGREIFTLEEFIQAFTWERVSLGGPVFDLEKLRWMNGKYIREVLSLEEVAERVKPFLREAGLSWESEAYLRRAVELMRPRFDTLKEFPEKARYLFTEDYPVSEKAQRKLEEGLPLLKELYPRLRAQEEWTEAALEALLRGFAAEKGVKLGQVAQPLRAALTGSLETPGLFEILALLGKERALRRLERALA

Source Source

Source organism organism	Thermus thermophilus
NCBI taxonomy ID ncbi_taxonomy_id	274
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

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

Entity 3 Entity 3 non-polymer

Description description	ADENOSINE-5'-TRIPHOSPHATE
Molecular weight formula_weight	507.2 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	347

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6. Fold Classification (SCOP + CATH) 7 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1n75a1
Class class	a — All alpha proteins
Fold Fold fold	a.97 — An anticodon-binding domain of class I aminoacyl-tRNA synthetases
Superfamily Superfamily superfamily	a.97.1 — An anticodon-binding domain of class I aminoacyl-tRNA synthetases
Family Family family	a.97.1.1 — C-terminal domain of glutamyl-tRNA synthetase (GluRS)

Domain ID domain_id	d1n75a2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.26 — Adenine nucleotide alpha hydrolase-like
Superfamily Superfamily superfamily	c.26.1 — Nucleotidylyl transferase
Family Family family	c.26.1.1 — Class I aminoacyl-tRNA synthetases (RS), catalytic domain

CATH v4.4 (5 domains)

Domain ID domain_id	1n75A01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	620 — HUPs

Domain ID domain_id	1n75A02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	1160 — Glutamyl-tRNA Synthetase; domain 2
Homologous superfamily homologous superfamily	10 — Glutamyl-trna Synthetase; Domain 2

Domain ID domain_id	1n75A03
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	800 — Glutamyl-tRNA Synthetase; domain 3
Homologous superfamily homologous superfamily	10 — Glutamyl-tRNA Synthetase; Domain 3

Domain ID domain_id	1n75A04
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	8 — Helicase, Ruva Protein; domain 3
Homologous superfamily homologous superfamily	70 — Glutamate-tRNA synthetase, class I, anticodon-binding domain 1

Domain ID domain_id	1n75A05
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily	350 —

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Unit-cell length a length_a	82.715 Å
Unit-cell length b length_b	84.062 Å
Unit-cell length c length_c	83.447 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	4

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

Resolution resolution	1.900 Å
Low-resolution limit resolution_low	37.540 Å
R factor r_factor	0.2090
R_work r_work	0.2090
R_free r_free	0.2360

Crystal structure of Thermus thermophilus glutamyl-tRNA synthetase complexed with ATP.

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

Glutamyl-tRNA synthetase

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

1n75__assembly_1__model_1

1n75__assembly_1__model_1 | I(q)

1n75__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 7 domains

SCOP 2.08 (2 domains)

CATH v4.4 (5 domains)

7. Citations (3)

Crystal structure of Thermus thermophilus glutamyl-tRNA synthetase complexed with ATP.

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

Glutamyl-tRNA synthetase

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

1n75__assembly_1__model_1

1n75__assembly_1__model_1 | I(q)

1n75__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 7 domains

SCOP 2.08 (2 domains)

CATH v4.4 (5 domains)

7. Citations (3)