1gl6

Plasmid coupling protein TrwB in complex with the non-hydrolysable GTP analogue GDPNP

Method: X-RAY DIFFRACTION

▼

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

ATPASE

ESCHERICHIA COLI

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 6	PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER × 7 CHLORIDE ION × 1 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID × 1 water × 6	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q04230
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–436； UniProt 72–507 Author chain B； PDBConstruct 1–436； UniProt 72–507 Author chain D； PDBConstruct 1–436； UniProt 72–507 Author chain E； PDBConstruct 1–436； UniProt 72–507 Author chain F； PDBConstruct 1–436； UniProt 72–507 Author chain G； PDBConstruct 1–436； UniProt 72–507

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.

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id	1gl6
Deposition date deposition_date	2001-08-28
Structure title title	Plasmid coupling protein TrwB in complex with the non-hydrolysable GTP analogue GDPNP
Keywords keywords	COUPLING PROTEIN, TYPE IV SECRETION SYSTEM, BACTERIAL CONJUG PROTEIN, RING HELICASE; COUPLING PROTEIN
Experimental Method method	X-RAY DIFFRACTION

▼

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.

1gl6__assembly_1__model_1

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

Download this curve (.dat)

1gl6__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1gl6__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	39.37 Å
Rg (electron density)	38.30 Å
Total Rg	38.82 Å
Atom count	19852
Residues	2498
Excluded volume	352410 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1gl6__assembly_1__model_1`	hexameric （6）	Success	4.1.3-1-20251215 (887e7ef)	View Download

▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Description description	ATPASE
Molecular weight formula_weight	48558.3 kDa
Mutation mutation	YES
Source method src_method	man
Copy count entity_count	6

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,D,E,F,G
Atom count atom_count	20441

NSVGQGEFGGAPFKRFLRGTRIVSGGKLKRMTREKAKQVTVAGVPMPRDAEPRHLLVNGATGTGKSVLLRELAYTGLLRGDRMVIVDPNGDMLSKFGRDKDIILNPYDQRTKGWSFFNEIRNDYDWQRYALSVVPRGKTDEAEEWASYGRLLLRETAKKLALIGTPSMRELFHWTTIATFDDLRGFLEGTLAESLFAGSNEASKALTSARFVLSDKLPEHVTMPDGDFSIRSWLEDPNGGNLFITWREDMGPALRPLISAWVDVVCTSILSLPEEPKRRLWLFIDELASLEKLASLADALTKGRKAGLRVVAGLQSTSQLDDVYGVKEAQTLRASFRSLVVLGGSRTDPKTNEDMSLSLGEHEVERDRYSKNTGKHHSTGRALERVRERVVMPAEIANLPDLTAYVGFAGNRPIAKVPLEIKQFANRQPAFVEGTI

Source Source

Source organism organism	ESCHERICHIA COLI
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	ESCHERICHIA COLI

Entity 2 Entity 2 non-polymer

Description description	PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER
Molecular weight formula_weight	522.2 kDa
Source method src_method	syn
Copy count entity_count	7

Entity 3 Entity 3 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 non-polymer

Description description	4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID
Molecular weight formula_weight	238.3 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	589

▼

6. Fold Classification (SCOP + CATH) 18 domains

SCOP 2.08 (6 domains)

Domain ID domain_id	d1gl6a_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.11 — RecA protein-like (ATPase-domain)

Domain ID domain_id	d1gl6b_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.11 — RecA protein-like (ATPase-domain)

Domain ID domain_id	d1gl6d_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.11 — RecA protein-like (ATPase-domain)

Domain ID domain_id	d1gl6e_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.11 — RecA protein-like (ATPase-domain)

Domain ID domain_id	d1gl6f_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.11 — RecA protein-like (ATPase-domain)

Domain ID domain_id	d1gl6g_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.11 — RecA protein-like (ATPase-domain)

CATH v4.4 (12 domains)

Domain ID domain_id	1gl6A01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	1gl6A02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	8 — Helicase, Ruva Protein; domain 3
Homologous superfamily homologous superfamily	80 — Magnesium chelatase subunit I, C-Terminal domain

Domain ID domain_id	1gl6B01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	1gl6B02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	8 — Helicase, Ruva Protein; domain 3
Homologous superfamily homologous superfamily	80 — Magnesium chelatase subunit I, C-Terminal domain

Domain ID domain_id	1gl6D01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	1gl6D02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	8 — Helicase, Ruva Protein; domain 3
Homologous superfamily homologous superfamily	80 — Magnesium chelatase subunit I, C-Terminal domain

Domain ID domain_id	1gl6E01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	1gl6E02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	8 — Helicase, Ruva Protein; domain 3
Homologous superfamily homologous superfamily	80 — Magnesium chelatase subunit I, C-Terminal domain

Domain ID domain_id	1gl6F01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	1gl6F02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	8 — Helicase, Ruva Protein; domain 3
Homologous superfamily homologous superfamily	80 — Magnesium chelatase subunit I, C-Terminal domain

Domain ID domain_id	1gl6G01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	1gl6G02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	8 — Helicase, Ruva Protein; domain 3
Homologous superfamily homologous superfamily	80 — Magnesium chelatase subunit I, C-Terminal domain

▶

Unit-cell length a length_a	151.600 Å
Unit-cell length b length_b	151.600 Å
Unit-cell length c length_c	252.000 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	36

Space group space_group	P 31 2 1
Space-group number int_tables_number	152
Crystal system crystal_system	—

Resolution resolution	2.800 Å
Low-resolution limit resolution_low	50.000 Å
R factor r_factor	0.2140
R_work r_work	0.2140
R_free r_free	0.2580

Plasmid coupling protein TrwB in complex with the non-hydrolysable GTP analogue GDPNP

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

ATPASE

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

1gl6__assembly_1__model_1

1gl6__assembly_1__model_1 | I(q)

1gl6__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 (5)

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 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 18 domains

SCOP 2.08 (6 domains)

CATH v4.4 (12 domains)

7. Citations (2)

Plasmid coupling protein TrwB in complex with the non-hydrolysable GTP analogue GDPNP

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

ATPASE

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

1gl6__assembly_1__model_1

1gl6__assembly_1__model_1 | I(q)

1gl6__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 (5)

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 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 18 domains

SCOP 2.08 (6 domains)

CATH v4.4 (12 domains)

7. Citations (2)