SAXSdb — 3cg0

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

Response regulator receiver modulated diguanylate cyclase with PAS/PAC sensor

Desulfovibrio desulfuricans subsp. desulfuricans str.

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 4	water × 4	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 4	water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q311G8_DESDG
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 4–132； UniProt 2–130 Author chain B； PDBConstruct 4–132； UniProt 2–130 Author chain C； PDBConstruct 4–132； UniProt 2–130 Author chain D； PDBConstruct 4–132； UniProt 2–130

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	3cg0
Deposition date deposition_date	2008-03-04
Structure title title	Crystal structure of signal receiver domain of modulated diguanylate cyclase from Desulfovibrio desulfuricans G20, an example of alternate folding
Keywords keywords	;SIGNAL RECEIVER DOMAIN, DIGUANYLATE CYCLASE, PROTEIN STRUCTURE INITIATIVE, PSI-2, New York SGX Research Center for Structural Genomics, NYSGXRC, STRUCTURAL GENOMICS, 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.

3cg0__assembly_1__model_1

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

Download this curve (.dat)

3cg0__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3cg0__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	28.84 Å
Rg (electron density)	28.03 Å
Total Rg	28.74 Å
Atom count	3808
Residues	503
Excluded volume	68359 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3cg0__assembly_1__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3cg0__assembly_2__model_1`	tetrameric （4）	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) 12 domains

SCOP 2.08 (8 domains)

Domain ID domain_id	d3cg0a1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.23 — Flavodoxin-like
Superfamily Superfamily superfamily	c.23.1 — CheY-like
Family Family family	c.23.1.0 — automated matches

Domain ID domain_id	d3cg0a2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d3cg0b1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.23 — Flavodoxin-like
Superfamily Superfamily superfamily	c.23.1 — CheY-like
Family Family family	c.23.1.0 — automated matches

Domain ID domain_id	d3cg0b2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d3cg0c1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.23 — Flavodoxin-like
Superfamily Superfamily superfamily	c.23.1 — CheY-like
Family Family family	c.23.1.0 — automated matches

Domain ID domain_id	d3cg0c2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d3cg0d1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.23 — Flavodoxin-like
Superfamily Superfamily superfamily	c.23.1 — CheY-like
Family Family family	c.23.1.0 — automated matches

Domain ID domain_id	d3cg0d2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

CATH v4.4 (4 domains)

Domain ID domain_id	3cg0A00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	2300 — Response regulator

Domain ID domain_id	3cg0B00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	2300 — Response regulator

Domain ID domain_id	3cg0C00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	2300 — Response regulator

Domain ID domain_id	3cg0D00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	2300 — Response regulator

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Unit-cell length a length_a	163.021 Å
Unit-cell length b length_b	51.631 Å
Unit-cell length c length_c	67.687 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	2.150 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	0.2334
R_work r_work	0.2316
R_free r_free	0.2884

Description description	Response regulator receiver modulated diguanylate cyclase with PAS/PAC sensor
Molecular weight formula_weight	15223.4 kDa
Source method src_method	man
Copy count entity_count	4

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	3990

Crystal structure of signal receiver domain of modulated diguanylate cyclase from Desulfovibrio desulfuricans G20, an example of alternate folding

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

Response regulator receiver modulated diguanylate cyclase with PAS/PAC sensor

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

3cg0__assembly_1__model_1

3cg0__assembly_1__model_1 | I(q)

3cg0__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) 12 domains

SCOP 2.08 (8 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Source organism organism	Desulfovibrio desulfuricans subsp. desulfuricans str.
NCBI taxonomy ID ncbi_taxonomy_id	207559
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	91

Crystal structure of signal receiver domain of modulated diguanylate cyclase from Desulfovibrio desulfuricans G20, an example of alternate folding

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

Response regulator receiver modulated diguanylate cyclase with PAS/PAC sensor

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

3cg0__assembly_1__model_1

3cg0__assembly_1__model_1 | I(q)

3cg0__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) 12 domains

SCOP 2.08 (8 domains)

CATH v4.4 (4 domains)

7. Citations (1)