SAXSdb — 3bsd

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

Bacteriochlorophyll a protein

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 3	MAGNESIUM ION × 3 BACTERIOCHLOROPHYLL A × 24 water × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	BCPA_CHLTE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–366； UniProt 1–366

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	3bsd
Deposition date deposition_date	2007-12-23
Structure title title	Light harvesting protein from RC of Chlorobium tepidum
Keywords keywords	;green bacteria, photosynthesis, light harvesting, Bacteriochlorophyll, Chlorophyll, Chromophore, Electron transport, Magnesium, Metal-binding, Reaction center, Transport ;; PHOTOSYNTHESIS
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.

3bsd__assembly_1__model_1

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

Download this curve (.dat)

3bsd__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3bsd__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	31.55 Å
Rg (electron density)	29.87 Å
Total Rg	30.84 Å
Atom count	9909
Residues	1077
Excluded volume	179550 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3bsd__assembly_1__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 (4)

Entity 1 Entity 1 polymer

Description description	Bacteriochlorophyll a protein
Molecular weight formula_weight	40343.4 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	3481

MALFGSNDVTTAHSDYEIVLEGGSSSWGKVKARAKVNAPPASPLLPADCDVKLNVKPLDPAKGFVRISAVFESIVDSTKNKLTIEADIANETKERRISVGEGMVSVGDFSHTFSFEGSVVNLFYYRSDAVRRNVPNPIYMQGRQFHDILMKVPLDNNDLIDTWEGTVKAIGSTGAFNDWIRDFWFIGPAFTALNEGGQRISRIEVNGLNTESGPKGPVGVSRWRFSHGGSGMVDSISRWAELFPSDKLNRPAQVEAGFRSDSQGIEVKVDGEFPGVSVDAGGGLRRILNHPLIPLVHHGMVGKFNNFNVDAQLKVVLPKGYKIRYAAPQYRSQNLEEYRWSGGAYARWVEHVCKGGVGQFEILYAQ

Entity 2 Entity 2 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	BACTERIOCHLOROPHYLL A
Molecular weight formula_weight	911.5 kDa
Source method src_method	syn
Copy count entity_count	8

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	178

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6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d3bsda_
Class class	b — All beta proteins
Fold Fold fold	b.75 — Bacteriochlorophyll A protein
Superfamily Superfamily superfamily	b.75.1 — Bacteriochlorophyll A protein
Family Family family	b.75.1.1 — Bacteriochlorophyll A protein

CATH v4.4 (1 domains)

Domain ID domain_id	3bsdA00
Class class	2 — Mainly Beta
Architecture architecture	50 — Clam
Topology topology	10 — Bacteriochlorophyll-a Protein
Homologous superfamily homologous superfamily	10 — Bacteriochlorophyll A

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Unit-cell length a length_a	167.695 Å
Unit-cell length b length_b	167.695 Å
Unit-cell length c length_c	167.695 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	48

Space group space_group	I 41 3 2
Space-group number int_tables_number	214
Crystal system crystal_system	—

Resolution resolution	2.300 Å
Low-resolution limit resolution_low	44.820 Å
R factor r_factor	0.1784
R_work r_work	0.1736
R_free r_free	0.2733

Light harvesting protein from RC of Chlorobium tepidum

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

Bacteriochlorophyll a 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

3bsd__assembly_1__model_1

3bsd__assembly_1__model_1 | I(q)

3bsd__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (1)

Light harvesting protein from RC of Chlorobium tepidum

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

Bacteriochlorophyll a 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

3bsd__assembly_1__model_1

3bsd__assembly_1__model_1 | I(q)

3bsd__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (1)