SAXSdb — 2o2j

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

Tryptophan synthase beta chain

Mycobacterium tuberculosis

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TRPB_MYCTU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–422； UniProt 1–422 Author chain B； PDBConstruct 1–422； UniProt 1–422

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	2o2j
Deposition date deposition_date	2006-11-29
Structure title title	Mycobacterium tuberculosis tryptophan synthase beta chain dimer (apoform)
Keywords keywords	;Amino-acid biosynthesis, Tryptophan biosynthesis, Structural Genomics, Mycobacterium Tuberculosis Structural Proteomics Project, XMTB, LYASE ;; LYASE
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.

2o2j__assembly_1__model_1

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

Download this curve (.dat)

2o2j__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2o2j__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	26.88 Å
Rg (electron density)	25.99 Å
Total Rg	26.78 Å
Atom count	4738
Residues	631
Excluded volume	83935 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2o2j__assembly_1__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 (2)

Entity 1 Entity 1 polymer

Description description	Tryptophan synthase beta chain
Molecular weight formula_weight	44694.2 kDa
EC 编号 ec_number	4.2.1.20
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	4758

MMTDLSTPDLPRMSAAIAEPTSHDPDSGGHFGGPSGWGGRYVPEALMAVIEEVTAAYQKERVSQDFLDDLDRLQANYAGRPSPLYEATRLSQHAGSARIFLKREDLNHTGSHKINNVLGQALLARRMGKTRVIAETGAGQHGVATATACALLGLDCVIYMGGIDTARQALNVARMRLLGAEVVAVQTGSKTLKDAINEAFRDWVANADNTYYCFGTAAGPHPFPTMVRDFQRIIGMEARVQIQGQAGRLPDAVVACVGGGSNAIGIFHAFLDDPGVRLVGFEAAGDGVETGRHAATFTAGSPGAFHGSFSYLLQDEDGQTIESHSISAGLDYPGVGPEHAWLKEAGRVDYRPITDSEAMDAFGLLCRMEGIIPAIESAHAVAGALKLGVELGRGAVIVVNLSGRGDKDVETAAKWFGLLGND

Source Source

Source organism organism	Mycobacterium tuberculosis
NCBI taxonomy ID ncbi_taxonomy_id	1773
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	20

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d2o2ja_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.79 — Tryptophan synthase beta subunit-like PLP-dependent enzymes
Superfamily Superfamily superfamily	c.79.1 — Tryptophan synthase beta subunit-like PLP-dependent enzymes
Family Family family	c.79.1.1 — Tryptophan synthase beta subunit-like PLP-dependent enzymes

Domain ID domain_id	d2o2jb_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.79 — Tryptophan synthase beta subunit-like PLP-dependent enzymes
Superfamily Superfamily superfamily	c.79.1 — Tryptophan synthase beta subunit-like PLP-dependent enzymes
Family Family family	c.79.1.1 — Tryptophan synthase beta subunit-like PLP-dependent enzymes

CATH v4.4 (4 domains)

Domain ID domain_id	2o2jA01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1100 —

Domain ID domain_id	2o2jA02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1100 —

Domain ID domain_id	2o2jB01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1100 —

Domain ID domain_id	2o2jB02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1100 —

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Unit-cell length a length_a	83.823 Å
Unit-cell length b length_b	114.966 Å
Unit-cell length c length_c	159.270 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	C 2 2 21
Space-group number int_tables_number	20
Crystal system crystal_system	—

Resolution resolution	2.560 Å
Low-resolution limit resolution_low	10.000 Å
R factor r_factor	0.2144
R_work r_work	0.2096
R_free r_free	0.3038

Mycobacterium tuberculosis tryptophan synthase beta chain dimer (apoform)

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

Tryptophan synthase beta chain

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

2o2j__assembly_1__model_1

2o2j__assembly_1__model_1 | I(q)

2o2j__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Mycobacterium tuberculosis tryptophan synthase beta chain dimer (apoform)

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

Tryptophan synthase beta chain

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

2o2j__assembly_1__model_1

2o2j__assembly_1__model_1 | I(q)

2o2j__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

CATH v4.4 (4 domains)

7. Citations (1)