2c9i

Structure of the fluorescent protein asFP499 from Anemonia sulcata

Method: X-RAY DIFFRACTION

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

GREEN FLUORESCENT PROTEIN ASFP499

ANEMONIA SULCATA

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	Q9GPI6_ANESU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–226； UniProt 1–228 Author chain B； PDBConstruct 1–226； UniProt 1–228 Author chain C； PDBConstruct 1–226； UniProt 1–228 Author chain D； PDBConstruct 1–226； UniProt 1–228 Author chain E； PDBConstruct 1–226； UniProt 1–228 Author chain F； PDBConstruct 1–226； UniProt 1–228 Author chain G； PDBConstruct 1–226； UniProt 1–228 Author chain H； PDBConstruct 1–226； UniProt 1–228

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	2c9i
Deposition date deposition_date	2005-12-12
Structure title title	Structure of the fluorescent protein asFP499 from Anemonia sulcata
Keywords keywords	FLUORESCENT PROTEIN, BETA-BARREL, BIOLUMINESCENCE, LUMINESCENCE, 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.

2c9i__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

2c9i__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2c9i__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	28.85 Å
Rg (electron density)	27.86 Å
Total Rg	28.86 Å
Atom count	7116
Residues	899
Excluded volume	126930 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2c9i__assembly_1__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2c9i__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) 16 domains

SCOP 2.08 (8 domains)

Domain ID domain_id	d2c9ia_
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	d2c9ib_
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	d2c9ic_
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	d2c9id_
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	d2c9ie_
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	d2c9if_
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	d2c9ig_
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	d2c9ih_
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 (8 domains)

Domain ID domain_id	2c9iA00
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	2c9iB00
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	2c9iC00
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	2c9iD00
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	2c9iE00
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	2c9iF00
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	2c9iG00
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	2c9iH00
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	71.880 Å
Unit-cell length b length_b	135.126 Å
Unit-cell length c length_c	95.071 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	106.93 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	16

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

Resolution resolution	1.820 Å
Low-resolution limit resolution_low	50.000 Å
R factor r_factor	0.2480
R_work r_work	0.2450
R_free r_free	0.2920

Description description	GREEN FLUORESCENT PROTEIN ASFP499
Molecular weight formula_weight	25378.9 kDa
Source method src_method	man
Copy count entity_count	8

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F,G,H
Atom count atom_count	15798

Structure of the fluorescent protein asFP499 from Anemonia sulcata

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

GREEN FLUORESCENT PROTEIN ASFP499

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

2c9i__assembly_2__model_1

2c9i__assembly_2__model_1 | I(q)

2c9i__assembly_2__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) 16 domains

SCOP 2.08 (8 domains)

CATH v4.4 (8 domains)

7. Citations (1)

Source organism organism	ANEMONIA SULCATA
Common name common_name	MEDITERRANEAN SNAKELOCKS SEA ANEMONE
NCBI taxonomy ID ncbi_taxonomy_id	6108
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	1563

Structure of the fluorescent protein asFP499 from Anemonia sulcata

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

GREEN FLUORESCENT PROTEIN ASFP499

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

2c9i__assembly_2__model_1

2c9i__assembly_2__model_1 | I(q)

2c9i__assembly_2__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) 16 domains

SCOP 2.08 (8 domains)

CATH v4.4 (8 domains)

7. Citations (1)