SAXSdb — 2z55

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

Archaerhodopsin-2

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Homooligomer	Protein 3 其他Polymer 3	beta-D-galactopyranose-(1-6)-alpha-D-mannopyranose-(1-2)-alpha-D-glucopyranose × 3 RETINAL × 3 BACTERIORUBERIN × 3 2,3-DI-PHYTANYL-GLYCEROL × 3 water × 3	Consistent with protein count
2	Other combination	Homooligomer	Protein 3 其他Polymer 3	beta-D-galactopyranose-(1-6)-alpha-D-mannopyranose-(1-2)-alpha-D-glucopyranose × 3 RETINAL × 3 BACTERIORUBERIN × 3 2,3-DI-PHYTANYL-GLYCEROL × 3 water × 3	Consistent with protein count
3	Other combination	Monomer	Protein 1 其他Polymer 2	beta-D-galactopyranose-(1-6)-alpha-D-mannopyranose-(1-2)-alpha-D-glucopyranose × 2 RETINAL × 1 BACTERIORUBERIN × 1 2,3-DI-PHYTANYL-GLYCEROL × 1 water × 1	Consistent with protein count
4	Protein monomer	Monomer	Protein 1	RETINAL × 1 BACTERIORUBERIN × 1 2,3-DI-PHYTANYL-GLYCEROL × 1 water × 1	Consistent with protein count
5	Other combination	Homooligomer	Protein 3 其他Polymer 6	beta-D-galactopyranose-(1-6)-alpha-D-mannopyranose-(1-2)-alpha-D-glucopyranose × 6 RETINAL × 3 BACTERIORUBERIN × 3 2,3-DI-PHYTANYL-GLYCEROL × 3 water × 3	Consistent with protein count
6	Protein homooligomer	Homooligomer	Protein 3	RETINAL × 3 BACTERIORUBERIN × 3 2,3-DI-PHYTANYL-GLYCEROL × 3 water × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	BACR2_HALS2
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–253； UniProt 7–259 Author chain B； PDBConstruct 1–253； UniProt 7–259 Author chain D； PDBConstruct 1–253； UniProt 7–259 Author chain E； PDBConstruct 1–253； UniProt 7–259

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	2z55
Deposition date deposition_date	2007-06-28
Structure title title	Bacterioruberin in the trimeric structure of archaerhodopsin-2
Keywords keywords	retinal protein, bacterioruberin, TRANSPORT PROTEIN; TRANSPORT 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.

2z55__assembly_5__model_1

Assembly 5 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

2z55__assembly_5__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2z55__assembly_5__model_1 | P(r) · Pending

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

Rg（Guinier）	27.22 Å
Rg (electron density)	25.24 Å
Total Rg	26.43 Å
Atom count	6048
Residues	711
Excluded volume	113180 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2z55__assembly_1__model_1`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2z55__assembly_2__model_1`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`2z55__assembly_3__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
4	1	`2z55__assembly_4__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
5	1	`2z55__assembly_5__model_1`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
6	1	`2z55__assembly_6__model_1`	trimeric （3）	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 (6)

Entity 1 Entity 1 polymer

Description description	Archaerhodopsin-2
Molecular weight formula_weight	27312.8 kDa
Source method src_method	nat
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,D,E
Atom count atom_count	8087

QAGFDLLNDGRPETLWLGIGTLLMLIGTFYFIARGWGVTDKEAREYYAITILVPGIASAAYLAMFFGIGVTEVELASGTVLDIYYARYADWLFTTPLLLLDLALLAKVDRVTIGTLIGVDALMIVTGLIGALSKTPLARYTWWLFSTIAFLFVLYYLLTSLRSAAAKRSEEVRSTFNTLTALVAVLWTAYPILWIVGTEGAGVVGLGIETLAFMVLDVTAKVGFGFVLLRSRAILGETEAPEPSAGADASAAD

Entity 2 Entity 2 branched

Description description	beta-D-galactopyranose-(1-6)-alpha-D-mannopyranose-(1-2)-alpha-D-glucopyranose
Molecular weight formula_weight	504.4 kDa
Source method src_method	man
Copy count entity_count	4

Entity 3 Entity 3 non-polymer

Description description	RETINAL
Molecular weight formula_weight	284.4 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 4 Entity 4 non-polymer

Description description	BACTERIORUBERIN
Molecular weight formula_weight	741.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 5 Entity 5 non-polymer

Description description	2,3-DI-PHYTANYL-GLYCEROL
Molecular weight formula_weight	653.2 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 6 Entity 6 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	101

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d2z55a_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.13 — Class A G protein-coupled receptor (GPCR)-like
Superfamily Superfamily superfamily	f.13.1 — Class A G protein-coupled receptor (GPCR)-like
Family Family family	f.13.1.1 — Bacteriorhodopsin-like

Domain ID domain_id	d2z55b_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.13 — Class A G protein-coupled receptor (GPCR)-like
Superfamily Superfamily superfamily	f.13.1 — Class A G protein-coupled receptor (GPCR)-like
Family Family family	f.13.1.1 — Bacteriorhodopsin-like

Domain ID domain_id	d2z55d_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.13 — Class A G protein-coupled receptor (GPCR)-like
Superfamily Superfamily superfamily	f.13.1 — Class A G protein-coupled receptor (GPCR)-like
Family Family family	f.13.1.1 — Bacteriorhodopsin-like

Domain ID domain_id	d2z55e_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.13 — Class A G protein-coupled receptor (GPCR)-like
Superfamily Superfamily superfamily	f.13.1 — Class A G protein-coupled receptor (GPCR)-like
Family Family family	f.13.1.1 — Bacteriorhodopsin-like

CATH v4.4 (4 domains)

Domain ID domain_id	2z55A00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1070 — Rhopdopsin 7-helix transmembrane proteins
Homologous superfamily homologous superfamily	10 — Rhodopsin 7-helix transmembrane proteins

Domain ID domain_id	2z55B00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1070 — Rhopdopsin 7-helix transmembrane proteins
Homologous superfamily homologous superfamily	10 — Rhodopsin 7-helix transmembrane proteins

Domain ID domain_id	2z55D00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1070 — Rhopdopsin 7-helix transmembrane proteins
Homologous superfamily homologous superfamily	10 — Rhodopsin 7-helix transmembrane proteins

Domain ID domain_id	2z55E00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1070 — Rhopdopsin 7-helix transmembrane proteins
Homologous superfamily homologous superfamily	10 — Rhodopsin 7-helix transmembrane proteins

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Unit-cell length a length_a	108.830 Å
Unit-cell length b length_b	108.830 Å
Unit-cell length c length_c	220.710 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	24

Space group space_group	P 63
Space-group number int_tables_number	173
Crystal system crystal_system	—

Resolution resolution	2.500 Å
Low-resolution limit resolution_low	15.000 Å
R factor r_factor	0.2010
R_work r_work	0.2010
R_free r_free	0.2320

Bacterioruberin in the trimeric structure of archaerhodopsin-2

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

Archaerhodopsin-2

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

2z55__assembly_5__model_1

2z55__assembly_5__model_1 | I(q)

2z55__assembly_5__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 (6)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 branched

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Bacterioruberin in the trimeric structure of archaerhodopsin-2

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

Archaerhodopsin-2

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

2z55__assembly_5__model_1

2z55__assembly_5__model_1 | I(q)

2z55__assembly_5__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 (6)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 branched

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)