2ii8

Anabaena sensory rhodopsin transducer

Method: X-RAY DIFFRACTION

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

Anabaena sensory rhodopsin transducer protein

Anabaena 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
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	Q8YSC3_ANASP
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–125； UniProt 1–125 Author chain B； PDBConstruct 1–125； UniProt 1–125 Author chain C； PDBConstruct 1–125； UniProt 1–125 Author chain D； PDBConstruct 1–125； UniProt 1–125 Author chain E； PDBConstruct 1–125； UniProt 1–125 Author chain F； PDBConstruct 1–125； UniProt 1–125 Author chain G； PDBConstruct 1–125； UniProt 1–125 Author chain H； PDBConstruct 1–125； UniProt 1–125

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	2ii8
Deposition date deposition_date	2006-09-27
Structure title title	Anabaena sensory rhodopsin transducer
Keywords keywords	rhodopsin, transducer, SIGNALING PROTEIN; SIGNALING 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.

2ii8__assembly_1__model_1

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

Download this curve (.dat)

2ii8__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2ii8__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	23.41 Å
Rg (electron density)	22.15 Å
Total Rg	22.96 Å
Atom count	3012
Residues	384
Excluded volume	53159 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2ii8__assembly_1__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2ii8__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	d2ii8a_
Class class	b — All beta proteins
Fold Fold fold	b.123 — Hypothetical protein TM1070
Superfamily Superfamily superfamily	b.123.1 — Hypothetical protein TM1070
Family Family family	b.123.1.0 — automated matches

Domain ID domain_id	d2ii8b_
Class class	b — All beta proteins
Fold Fold fold	b.123 — Hypothetical protein TM1070
Superfamily Superfamily superfamily	b.123.1 — Hypothetical protein TM1070
Family Family family	b.123.1.0 — automated matches

Domain ID domain_id	d2ii8c_
Class class	b — All beta proteins
Fold Fold fold	b.123 — Hypothetical protein TM1070
Superfamily Superfamily superfamily	b.123.1 — Hypothetical protein TM1070
Family Family family	b.123.1.0 — automated matches

Domain ID domain_id	d2ii8d_
Class class	b — All beta proteins
Fold Fold fold	b.123 — Hypothetical protein TM1070
Superfamily Superfamily superfamily	b.123.1 — Hypothetical protein TM1070
Family Family family	b.123.1.0 — automated matches

Domain ID domain_id	d2ii8e_
Class class	b — All beta proteins
Fold Fold fold	b.123 — Hypothetical protein TM1070
Superfamily Superfamily superfamily	b.123.1 — Hypothetical protein TM1070
Family Family family	b.123.1.0 — automated matches

Domain ID domain_id	d2ii8f_
Class class	b — All beta proteins
Fold Fold fold	b.123 — Hypothetical protein TM1070
Superfamily Superfamily superfamily	b.123.1 — Hypothetical protein TM1070
Family Family family	b.123.1.0 — automated matches

Domain ID domain_id	d2ii8g_
Class class	b — All beta proteins
Fold Fold fold	b.123 — Hypothetical protein TM1070
Superfamily Superfamily superfamily	b.123.1 — Hypothetical protein TM1070
Family Family family	b.123.1.0 — automated matches

Domain ID domain_id	d2ii8h_
Class class	b — All beta proteins
Fold Fold fold	b.123 — Hypothetical protein TM1070
Superfamily Superfamily superfamily	b.123.1 — Hypothetical protein TM1070
Family Family family	b.123.1.0 — automated matches

CATH v4.4 (8 domains)

Domain ID domain_id	2ii8A00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	290 — Hypothetical Protein Tm1070; Chain: A
Homologous superfamily homologous superfamily	11 — TM1070-like

Domain ID domain_id	2ii8B00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	290 — Hypothetical Protein Tm1070; Chain: A
Homologous superfamily homologous superfamily	11 — TM1070-like

Domain ID domain_id	2ii8C00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	290 — Hypothetical Protein Tm1070; Chain: A
Homologous superfamily homologous superfamily	11 — TM1070-like

Domain ID domain_id	2ii8D00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	290 — Hypothetical Protein Tm1070; Chain: A
Homologous superfamily homologous superfamily	11 — TM1070-like

Domain ID domain_id	2ii8E00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	290 — Hypothetical Protein Tm1070; Chain: A
Homologous superfamily homologous superfamily	11 — TM1070-like

Domain ID domain_id	2ii8F00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	290 — Hypothetical Protein Tm1070; Chain: A
Homologous superfamily homologous superfamily	11 — TM1070-like

Domain ID domain_id	2ii8G00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	290 — Hypothetical Protein Tm1070; Chain: A
Homologous superfamily homologous superfamily	11 — TM1070-like

Domain ID domain_id	2ii8H00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	290 — Hypothetical Protein Tm1070; Chain: A
Homologous superfamily homologous superfamily	11 — TM1070-like

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Unit-cell length a length_a	72.799 Å
Unit-cell length b length_b	119.236 Å
Unit-cell length c length_c	120.790 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	32

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.100 Å
Low-resolution limit resolution_low	35.220 Å
R factor r_factor	0.2310
R_work r_work	0.2280
R_free r_free	0.2630

Description description	Anabaena sensory rhodopsin transducer protein
Molecular weight formula_weight	14704.3 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	6525

Anabaena sensory rhodopsin transducer

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

Anabaena sensory rhodopsin transducer protein

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

2ii8__assembly_1__model_1

2ii8__assembly_1__model_1 | I(q)

2ii8__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) 16 domains

SCOP 2.08 (8 domains)

CATH v4.4 (8 domains)

7. Citations (1)

Source organism organism	Anabaena sp.
NCBI taxonomy ID ncbi_taxonomy_id	1167
Host organism host_organism	Escherichia coli BL21

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	582

Anabaena sensory rhodopsin transducer

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

Anabaena sensory rhodopsin transducer protein

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

2ii8__assembly_1__model_1

2ii8__assembly_1__model_1 | I(q)

2ii8__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) 16 domains

SCOP 2.08 (8 domains)

CATH v4.4 (8 domains)

7. Citations (1)