SAXSdb — 2ztg

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

Alanyl-tRNA synthetase

Archaeoglobus fulgidus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	'5'-O-(N-(L-ALANYL)-SULFAMOYL)ADENOSINE × 1 ZINC ION × 2 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SYA_ARCFU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–739； UniProt 1–739

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	2ztg
Deposition date deposition_date	2008-10-01
Structure title title	Crystal structure of Archaeoglobus fulgidus alanyl-tRNA synthetase lacking the C-terminal dimerization domain in complex with Ala-SA
Keywords keywords	;Class-II Aminoacyl-tRNA synthetase, Aminoacyl-tRNA synthetase, ATP-binding, Cytoplasm, Ligase, Nucleotide-binding, Protein biosynthesis, Structural Genomics, NPPSFA, National Project on Protein Structural and Functional Analyses, RIKEN Structural Genomics/Proteomics Initiative, RSGI ;; 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.

2ztg__assembly_1__model_1

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

Download this curve (.dat)

2ztg__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2ztg__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	29.79 Å
Rg (electron density)	29.13 Å
Total Rg	29.77 Å
Atom count	5924
Residues	724
Excluded volume	105700 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2ztg__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	Alanyl-tRNA synthetase
Molecular weight formula_weight	84490.1 kDa
EC 编号 ec_number	6.1.1.7
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	6076

MTLDEEYLDITFLTENGFVRKRCPKCGKHFWTADPEREICGDPPCESYSFIGNPVFKKPFELDEMREYYLNFFERRGHGRIERYPVVARWRTDIYLTIASIADFQPFVTSGVAPPPANPLTISQPCIRLDDLDSVGRTGRHLTLFEMMAHHAFNYPGKEIYWKNETVAYCTELLNELGVKKEDIVYKEEPWAGGGNAGPCLEAIVGGLEVATLVFMNLEEHPEGDIEIKGARYRKMDNYIVDTGYGLERFVWASKGTPTVYDAIFPEVVDTIIDNSNVSFNREDERVRRIVAESSKLAGIMGELRGERLNQLRKSVADTVGVSVEELEGIVVPLEKVYSLADHTRCILFMLGDGLVPSNAGAGYLARLMIRRSLRLAEELELGLDLYDLVEMHKKILGFEFDVPLSTVQEILELEKERYRTTVSKGTRLVERLVERKKKLEKDDLIELYDSHGIPVELAVGIAAEKGAEVEMPKDIYAELAKRHSKAEKVQEKKITLQNEYPATEKLYYDDPTLLEFEAEVIGVEGDFVILNRSAFYPESGGQDNDVGYLIANGGKFEVVDVLEADGVVLHVVKGAKPEVGTKVKGVIDSDVRWRHMRHHSATHVLLYSLQKVLGNHVWQAGARKEFSKARLDVTHFRRPSEEEIKEIEMLANREILANKPIKWEWMDRIEAERKFGFRLYQGGVPPGRKIRVVQVGDDVQACGGTHCRSTGEIGMLKILKVESIQDGVIRFEFAAGEA

Source Source

Source organism organism	Archaeoglobus fulgidus
NCBI taxonomy ID ncbi_taxonomy_id	2234
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	'5'-O-(N-(L-ALANYL)-SULFAMOYL)ADENOSINE
Molecular weight formula_weight	417.4 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	ZINC ION
Molecular weight formula_weight	65.4 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	152

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6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

Domain ID domain_id	2ztgA01
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	2ztgA03
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	30 — Elongation Factor Tu (Ef-tu); domain 3
Homologous superfamily homologous superfamily	130 —

Domain ID domain_id	2ztgA04
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	980 — Threonyl-tRNA Synthetase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Threonyl-trna Synthetase; Chain A, domain 2

Domain ID domain_id	2ztgA05
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	54 — Replication Terminator Protein; Chain A, domain 2
Homologous superfamily homologous superfamily	20 —

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Unit-cell length a length_a	160.391 Å
Unit-cell length b length_b	49.082 Å
Unit-cell length c length_c	98.044 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	108.08 °
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	2.200 Å
Low-resolution limit resolution_low	46.740 Å
R factor r_factor	0.2150
R_work r_work	0.2150
R_free r_free	0.2640

Crystal structure of Archaeoglobus fulgidus alanyl-tRNA synthetase lacking the C-terminal dimerization domain in complex with Ala-SA

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

Alanyl-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

2ztg__assembly_1__model_1

2ztg__assembly_1__model_1 | I(q)

2ztg__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) 4 domains

CATH v4.4 (4 domains)

7. Citations (1)

Crystal structure of Archaeoglobus fulgidus alanyl-tRNA synthetase lacking the C-terminal dimerization domain in complex with Ala-SA

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

Alanyl-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

2ztg__assembly_1__model_1

2ztg__assembly_1__model_1 | I(q)

2ztg__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) 4 domains

CATH v4.4 (4 domains)

7. Citations (1)