SAXSdb — 2zi8

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

PROBABLE BIPHENYL-2,3-DIOL 1,2-DIOXYGENASE BPHC

Mycobacterium tuberculosis

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 8	FE (II) ION × 8 3,4-dihydroxy-9,10-secoandrosta-1(10),2,4-triene-9,17-dione × 8 water × 8	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	P96850_MYCTU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–300； UniProt 1–300 Author chain B； PDBConstruct 1–300； UniProt 1–300

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	2zi8
Deposition date deposition_date	2008-02-13
Structure title title	Crystal structure of the HsaC extradiol dioxygenase from M. tuberculosis in complex with 3,4-dihydroxy-9,10-seconandrost-1,3,5(10)-triene-9,17-dione (DHSA)
Keywords keywords	DHSA, HsaC, extradiol dioxygenase, Mycobacterium tuberculosis, Aromatic hydrocarbons catabolism, Iron, Oxidoreductase; OXIDOREDUCTASE
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.

2zi8__assembly_1__model_1

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

Download this curve (.dat)

2zi8__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2zi8__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	40.99 Å
Rg (electron density)	40.34 Å
Total Rg	40.77 Å
Atom count	18948
Residues	2388
Excluded volume	334390 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2zi8__assembly_1__model_1`	octameric （8）	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	PROBABLE BIPHENYL-2,3-DIOL 1,2-DIOXYGENASE BPHC
Molecular weight formula_weight	33628.3 kDa
EC 编号 ec_number	1.13.11.39
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	5236

MSIRSLGYLRIEATDMAAWREYGLKVLGMVEGKGAPEGALYLRMDDFPARLVVVPGEHDRLLEAGWECANAEGLQEIRNRLDLEGTPYKEATAAELADRRVDEMIRFADPSGNCLEVFHGTALEHRRVVSPYGHRFVTGEQGMGHVVLSTRDDAEALHFYRDVLGFRLRDSMRLPPQMVGRPADGPPAWLRFFGCNPRHHSLAFLPMPTSSGIVHLMVEVEQADDVGLCLDRALRRKVPMSATLGRHVNDLMLSFYMKTPGGFDIEFGCEGRQVDDRDWIARESTAVSLWGHDFTVGARG

Source Source

Source organism organism	Mycobacterium tuberculosis
NCBI taxonomy ID ncbi_taxonomy_id	1773
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	FE (II) ION
Molecular weight formula_weight	55.8 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	3,4-dihydroxy-9,10-secoandrosta-1(10),2,4-triene-9,17-dione
Molecular weight formula_weight	316.4 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	484

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d2zi8a1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.32 — Glyoxalase/Bleomycin resistance protein/Dihydroxybiphenyl dioxygenase
Superfamily Superfamily superfamily	d.32.1 — Glyoxalase/Bleomycin resistance protein/Dihydroxybiphenyl dioxygenase
Family Family family	d.32.1.0 — automated matches

Domain ID domain_id	d2zi8a2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.32 — Glyoxalase/Bleomycin resistance protein/Dihydroxybiphenyl dioxygenase
Superfamily Superfamily superfamily	d.32.1 — Glyoxalase/Bleomycin resistance protein/Dihydroxybiphenyl dioxygenase
Family Family family	d.32.1.0 — automated matches

Domain ID domain_id	d2zi8b1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.32 — Glyoxalase/Bleomycin resistance protein/Dihydroxybiphenyl dioxygenase
Superfamily Superfamily superfamily	d.32.1 — Glyoxalase/Bleomycin resistance protein/Dihydroxybiphenyl dioxygenase
Family Family family	d.32.1.0 — automated matches

Domain ID domain_id	d2zi8b2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.32 — Glyoxalase/Bleomycin resistance protein/Dihydroxybiphenyl dioxygenase
Superfamily Superfamily superfamily	d.32.1 — Glyoxalase/Bleomycin resistance protein/Dihydroxybiphenyl dioxygenase
Family Family family	d.32.1.0 — automated matches

CATH v4.4 (4 domains)

Domain ID domain_id	2zi8A01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	180 — 2,3-Dihydroxybiphenyl 1,2-Dioxygenase; domain 1
Homologous superfamily homologous superfamily	10 — 2,3-Dihydroxybiphenyl 1,2-Dioxygenase, domain 1

Domain ID domain_id	2zi8A02
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	180 — 2,3-Dihydroxybiphenyl 1,2-Dioxygenase; domain 1
Homologous superfamily homologous superfamily	10 — 2,3-Dihydroxybiphenyl 1,2-Dioxygenase, domain 1

Domain ID domain_id	2zi8B01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	180 — 2,3-Dihydroxybiphenyl 1,2-Dioxygenase; domain 1
Homologous superfamily homologous superfamily	10 — 2,3-Dihydroxybiphenyl 1,2-Dioxygenase, domain 1

Domain ID domain_id	2zi8B02
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	180 — 2,3-Dihydroxybiphenyl 1,2-Dioxygenase; domain 1
Homologous superfamily homologous superfamily	10 — 2,3-Dihydroxybiphenyl 1,2-Dioxygenase, domain 1

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Unit-cell length a length_a	124.318 Å
Unit-cell length b length_b	124.318 Å
Unit-cell length c length_c	106.383 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	16

Space group space_group	P 4 21 2
Space-group number int_tables_number	90
Crystal system crystal_system	—

Resolution resolution	2.200 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	0.1974
R_work r_work	0.1939
R_free r_free	0.2643

Crystal structure of the HsaC extradiol dioxygenase from M. tuberculosis in complex with 3,4-dihydroxy-9,10-seconandrost-1,3,5(10)-triene-9,17-dione (DHSA)

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

PROBABLE BIPHENYL-2,3-DIOL 1,2-DIOXYGENASE BPHC

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

2zi8__assembly_1__model_1

2zi8__assembly_1__model_1 | I(q)

2zi8__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

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Crystal structure of the HsaC extradiol dioxygenase from M. tuberculosis in complex with 3,4-dihydroxy-9,10-seconandrost-1,3,5(10)-triene-9,17-dione (DHSA)

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

PROBABLE BIPHENYL-2,3-DIOL 1,2-DIOXYGENASE BPHC

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

2zi8__assembly_1__model_1

2zi8__assembly_1__model_1 | I(q)

2zi8__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

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)