1ady

HISTIDYL-TRNA SYNTHETASE IN COMPLEX WITH HISTIDYL-ADENYLATE

Method: X-RAY DIFFRACTION

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

HISTIDYL-TRNA SYNTHETASE

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	SULFATE ION × 2 HISTIDYL-ADENOSINE MONOPHOSPHATE × 2	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	SULFATE ION × 2 HISTIDYL-ADENOSINE MONOPHOSPHATE × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SYH_THET8
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–421； UniProt 1–421 Author chain B； PDBConstruct 1–421； UniProt 1–421 Author chain C； PDBConstruct 1–421； UniProt 1–421 Author chain D； PDBConstruct 1–421； UniProt 1–421

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	1ady
Deposition date deposition_date	1997-02-19
Structure title title	HISTIDYL-TRNA SYNTHETASE IN COMPLEX WITH HISTIDYL-ADENYLATE
Keywords keywords	HISTIDYL-ADENYLATE, AMINO ACID, TRNA SYNTHETASE; TRNA SYNTHETASE
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.

1ady__assembly_1__model_1

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

Download this curve (.dat)

1ady__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1ady__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	31.20 Å
Rg (electron density)	30.55 Å
Total Rg	31.12 Å
Atom count	6694
Residues	840
Excluded volume	118810 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1ady__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1ady__assembly_2__model_1`	dimeric （2）	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 (3)

Entity 1 Entity 1 polymer

Description description	HISTIDYL-TRNA SYNTHETASE
Molecular weight formula_weight	47125.9 kDa
EC 编号 ec_number	6.1.1.21
Source method src_method	nat
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	13388

MTARAVRGTKDLFGKELRMHQRIVATARKVLEAAGALELVTPIFEETQVFEKGVGAATDIVRKEMFTFQDRGGRSLTLRPEGTAAMVRAYLEHGMKVWPQPVRLWMAGPMFRAERPQKGRYRQFHQVNYEALGSENPILDAEAVVLLYECLKELGLRRLKVKLSSVGDPEDRARYNAYLREVLSPHREALSEDSKERLEENPMRILDSKSERDQALLKELGVRPMLDFLGEEARAHLKEVERHLERLSVPYELEPALVRGLDYYVRTAFEVHHEEIGAQSALGGGGRYDGLSELLGGPRVPGVGFAFGVERVALALEAEGFGLPEEKGPDLYLIPLTEEAVAEAFYLAEALRPRLRAEYALAPRKPAKGLEEALKRGAAFAGFLGEDELRAGEVTLKRLATGEQVRLSREEVPGYLLQALG

Entity 2 Entity 2 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 3 Entity 3 non-polymer

Description description	HISTIDYL-ADENOSINE MONOPHOSPHATE
Molecular weight formula_weight	484.4 kDa
Source method src_method	syn
Copy count entity_count	4

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6. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

Domain ID domain_id	d1adya1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.51 — Anticodon-binding domain-like
Superfamily Superfamily superfamily	c.51.1 — Class II aaRS ABD-related
Family Family family	c.51.1.1 — Anticodon-binding domain of Class II aaRS

Domain ID domain_id	d1adya2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.104 — Class II aaRS and biotin synthetases
Superfamily Superfamily superfamily	d.104.1 — Class II aaRS and biotin synthetases
Family Family family	d.104.1.1 — Class II aminoacyl-tRNA synthetase (aaRS)-like, catalytic domain

Domain ID domain_id	d1adyb1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.51 — Anticodon-binding domain-like
Superfamily Superfamily superfamily	c.51.1 — Class II aaRS ABD-related
Family Family family	c.51.1.1 — Anticodon-binding domain of Class II aaRS

Domain ID domain_id	d1adyb2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.104 — Class II aaRS and biotin synthetases
Superfamily Superfamily superfamily	d.104.1 — Class II aaRS and biotin synthetases
Family Family family	d.104.1.1 — Class II aminoacyl-tRNA synthetase (aaRS)-like, catalytic domain

Domain ID domain_id	d1adyc1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.51 — Anticodon-binding domain-like
Superfamily Superfamily superfamily	c.51.1 — Class II aaRS ABD-related
Family Family family	c.51.1.1 — Anticodon-binding domain of Class II aaRS

Domain ID domain_id	d1adyc2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.104 — Class II aaRS and biotin synthetases
Superfamily Superfamily superfamily	d.104.1 — Class II aaRS and biotin synthetases
Family Family family	d.104.1.1 — Class II aminoacyl-tRNA synthetase (aaRS)-like, catalytic domain

Domain ID domain_id	d1adyd1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.51 — Anticodon-binding domain-like
Superfamily Superfamily superfamily	c.51.1 — Class II aaRS ABD-related
Family Family family	c.51.1.1 — Anticodon-binding domain of Class II aaRS

Domain ID domain_id	d1adyd2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.104 — Class II aaRS and biotin synthetases
Superfamily Superfamily superfamily	d.104.1 — Class II aaRS and biotin synthetases
Family Family family	d.104.1.1 — Class II aminoacyl-tRNA synthetase (aaRS)-like, catalytic domain

CATH v4.4 (8 domains)

Domain ID domain_id	1adyA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	930 — BirA Bifunctional Protein; domain 2
Homologous superfamily homologous superfamily	10 — Bira Bifunctional Protein; Domain 2

Domain ID domain_id	1adyA02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	800 — Anticodon-binding domain

Domain ID domain_id	1adyB01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	930 — BirA Bifunctional Protein; domain 2
Homologous superfamily homologous superfamily	10 — Bira Bifunctional Protein; Domain 2

Domain ID domain_id	1adyB02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	800 — Anticodon-binding domain

Domain ID domain_id	1adyC01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	930 — BirA Bifunctional Protein; domain 2
Homologous superfamily homologous superfamily	10 — Bira Bifunctional Protein; Domain 2

Domain ID domain_id	1adyC02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	800 — Anticodon-binding domain

Domain ID domain_id	1adyD01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	930 — BirA Bifunctional Protein; domain 2
Homologous superfamily homologous superfamily	10 — Bira Bifunctional Protein; Domain 2

Domain ID domain_id	1adyD02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	800 — Anticodon-binding domain

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Unit-cell length a length_a	171.300 Å
Unit-cell length b length_b	214.700 Å
Unit-cell length c length_c	49.300 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	16

Space group space_group	P 21 21 2
Space-group number int_tables_number	18
Crystal system crystal_system	—

Resolution resolution	2.800 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	0.2600
R_work r_work	0.2600
R_free r_free	0.3000

HISTIDYL-TRNA SYNTHETASE IN COMPLEX WITH HISTIDYL-ADENYLATE

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

HISTIDYL-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

1ady__assembly_1__model_1

1ady__assembly_1__model_1 | I(q)

1ady__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

6. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

CATH v4.4 (8 domains)

7. Citations (1)

HISTIDYL-TRNA SYNTHETASE IN COMPLEX WITH HISTIDYL-ADENYLATE

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

HISTIDYL-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

1ady__assembly_1__model_1

1ady__assembly_1__model_1 | I(q)

1ady__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

6. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

CATH v4.4 (8 domains)

7. Citations (1)