SAXSdb — 1sgv

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

tRNA pseudouridine synthase B

Mycobacterium tuberculosis

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TRUB_MYCTU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–298； UniProt 1–298 Author chain B； PDBConstruct 1–298； UniProt 1–298

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	1sgv
Deposition date deposition_date	2004-02-24
Structure title title	STRUCTURE OF TRNA PSI55 PSEUDOURIDINE SYNTHASE (TRUB)
Keywords keywords	;Hinged motion, tRNA modification, Structural Genomics, PSI, Protein Structure Initiative, TB Structural Genomics Consortium, TBSGC, 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.

1sgv__assembly_1__model_1

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

Download this curve (.dat)

1sgv__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1sgv__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	22.97 Å
Rg (electron density)	22.17 Å
Total Rg	22.87 Å
Atom count	1949
Residues	262
Excluded volume	34485 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1sgv__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1sgv__assembly_2__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 (2)

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1sgva1
Class class	b — All beta proteins
Fold Fold fold	b.122 — PUA domain-like
Superfamily Superfamily superfamily	b.122.1 — PUA domain-like
Family Family family	b.122.1.1 — PUA domain

Domain ID domain_id	d1sgva2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.265 — Pseudouridine synthase
Superfamily Superfamily superfamily	d.265.1 — Pseudouridine synthase
Family Family family	d.265.1.2 — Pseudouridine synthase II TruB

Domain ID domain_id	d1sgvb1
Class class	b — All beta proteins
Fold Fold fold	b.122 — PUA domain-like
Superfamily Superfamily superfamily	b.122.1 — PUA domain-like
Family Family family	b.122.1.1 — PUA domain

Domain ID domain_id	d1sgvb2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.265 — Pseudouridine synthase
Superfamily Superfamily superfamily	d.265.1 — Pseudouridine synthase
Family Family family	d.265.1.2 — Pseudouridine synthase II TruB

CATH v4.4 (4 domains)

Domain ID domain_id	1sgvA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2350 — Pseudouridine synthase
Homologous superfamily homologous superfamily	10 — Pseudouridine synthase

Domain ID domain_id	1sgvA02
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	130 — Archaeosine Trna-guanine Transglycosylase; Chain: A, domain 4
Homologous superfamily homologous superfamily	10 — PUA domain

Domain ID domain_id	1sgvB01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2350 — Pseudouridine synthase
Homologous superfamily homologous superfamily	10 — Pseudouridine synthase

Domain ID domain_id	1sgvB02
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	130 — Archaeosine Trna-guanine Transglycosylase; Chain: A, domain 4
Homologous superfamily homologous superfamily	10 — PUA domain

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Unit-cell length a length_a	45.948 Å
Unit-cell length b length_b	94.100 Å
Unit-cell length c length_c	78.508 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	100.36 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	1.900 Å
Low-resolution limit resolution_low	40.160 Å
R factor r_factor	0.2027
R_work r_work	0.2008
R_free r_free	0.2395

Description description	tRNA pseudouridine synthase B
Molecular weight formula_weight	33860.9 kDa
EC 编号 ec_number	4.2.1.70
Source method src_method	man
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	4381

STRUCTURE OF TRNA PSI55 PSEUDOURIDINE SYNTHASE (TRUB)

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

tRNA pseudouridine synthase B

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

1sgv__assembly_1__model_1

1sgv__assembly_1__model_1 | I(q)

1sgv__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

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) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Source organism organism	Mycobacterium tuberculosis
NCBI taxonomy ID ncbi_taxonomy_id	83332
Host organism host_organism	Escherichia coli

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	451

STRUCTURE OF TRNA PSI55 PSEUDOURIDINE SYNTHASE (TRUB)

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

tRNA pseudouridine synthase B

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

1sgv__assembly_1__model_1

1sgv__assembly_1__model_1 | I(q)

1sgv__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

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) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)