SAXSdb — 1zgp

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

Red fluorescent protein drFP583

Discosoma sp.

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	DSRD_DISSP
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–223； UniProt 1–225 Author chain B； PDBConstruct 1–223； UniProt 1–225 Author chain C； PDBConstruct 1–223； UniProt 1–225 Author chain D； PDBConstruct 1–223； UniProt 1–225

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	1zgp
Deposition date deposition_date	2005-04-21
Structure title title	Crystal Structure of the Discosoma Red Fluorescent Protein (DsRed) Variant K70M
Keywords keywords	RFP, red, fluorescent protein, DsRed, drFP583, chromophore, GFP, coral, beta barrel, beta can, LUMINESCENT PROTEIN; LUMINESCENT PROTEIN
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.

1zgp__assembly_1__model_1

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

Download this curve (.dat)

1zgp__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1zgp__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	28.89 Å
Rg (electron density)	27.75 Å
Total Rg	28.73 Å
Atom count	7160
Residues	868
Excluded volume	127690 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1zgp__assembly_1__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) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1zgpa_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.22 — GFP-like
Superfamily Superfamily superfamily	d.22.1 — GFP-like
Family Family family	d.22.1.1 — Fluorescent proteins

Domain ID domain_id	d1zgpb_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.22 — GFP-like
Superfamily Superfamily superfamily	d.22.1 — GFP-like
Family Family family	d.22.1.1 — Fluorescent proteins

Domain ID domain_id	d1zgpc_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.22 — GFP-like
Superfamily Superfamily superfamily	d.22.1 — GFP-like
Family Family family	d.22.1.1 — Fluorescent proteins

Domain ID domain_id	d1zgpd_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.22 — GFP-like
Superfamily Superfamily superfamily	d.22.1 — GFP-like
Family Family family	d.22.1.1 — Fluorescent proteins

CATH v4.4 (4 domains)

Domain ID domain_id	1zgpA00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	155 — Green Fluorescent Protein
Homologous superfamily homologous superfamily	10 — Green fluorescent protein

Domain ID domain_id	1zgpB00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	155 — Green Fluorescent Protein
Homologous superfamily homologous superfamily	10 — Green fluorescent protein

Domain ID domain_id	1zgpC00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	155 — Green Fluorescent Protein
Homologous superfamily homologous superfamily	10 — Green fluorescent protein

Domain ID domain_id	1zgpD00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	155 — Green Fluorescent Protein
Homologous superfamily homologous superfamily	10 — Green fluorescent protein

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Unit-cell length a length_a	57.280 Å
Unit-cell length b length_b	57.228 Å
Unit-cell length c length_c	71.543 Å
Unit-cell angle α angle_alpha	89.74 °
Unit-cell angle β angle_beta	100.25 °
Unit-cell angle γ angle_gamma	92.86 °
Molecules per unit cell Z z_pdb	4

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

Resolution resolution	1.900 Å
Low-resolution limit resolution_low	32.510 Å
R factor r_factor	0.2260
R_work r_work	0.2260
R_free r_free	0.2630

Description description	Red fluorescent protein drFP583
Molecular weight formula_weight	25950.6 kDa
Mutation mutation	K70M
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	7491

Crystal Structure of the Discosoma Red Fluorescent Protein (DsRed) Variant K70M

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

Red fluorescent protein drFP583

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

1zgp__assembly_1__model_1

1zgp__assembly_1__model_1 | I(q)

1zgp__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) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Source organism organism	Discosoma sp.
NCBI taxonomy ID ncbi_taxonomy_id	86600
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	331

Crystal Structure of the Discosoma Red Fluorescent Protein (DsRed) Variant K70M

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

Red fluorescent protein drFP583

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

1zgp__assembly_1__model_1

1zgp__assembly_1__model_1 | I(q)

1zgp__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) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)