1zxo

X-ray Crystal Structure of Protein Q8A1P1 from Bacteroides thetaiotaomicron. Northeast Structural Genomics Consortium Target BtR25.

Method: X-RAY DIFFRACTION

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

conserved hypothetical protein Q8A1P1

Bacteroides thetaiotaomicron

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 6	water × 6	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 6	water × 6	Consistent with protein count
3	Protein homooligomer	Homooligomer	Protein 6	water × 6	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q8A1P1_BACTN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–283； UniProt 1–283 Author chain B； PDBConstruct 1–283； UniProt 1–283 Author chain C； PDBConstruct 1–283； UniProt 1–283 Author chain D； PDBConstruct 1–283； UniProt 1–283 Author chain E； PDBConstruct 1–283； UniProt 1–283 Author chain F； PDBConstruct 1–283； UniProt 1–283

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	1zxo
Deposition date deposition_date	2005-06-08
Structure title title	X-ray Crystal Structure of Protein Q8A1P1 from Bacteroides thetaiotaomicron. Northeast Structural Genomics Consortium Target BtR25.
Keywords keywords	NESG, BtR25, Structural Genomics, PSI, Protein Structure Initiative, Northeast Structural Genomics Consortium, UNKNOWN FUNCTION; UNKNOWN FUNCTION
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.

1zxo__assembly_1__model_1

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

Download this curve (.dat)

1zxo__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1zxo__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	38.12 Å
Rg (electron density)	37.09 Å
Total Rg	37.82 Å
Atom count	12519
Residues	1587
Excluded volume	226240 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1zxo__assembly_1__model_1`	hexameric （6）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1zxo__assembly_2__model_1`	hexameric （6）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`1zxo__assembly_3__model_1`	hexameric （6）	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) 30 domains

SCOP 2.08 (12 domains)

Domain ID domain_id	d1zxoa1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamily	c.55.1 — Actin-like ATPase domain
Family Family family	c.55.1.5 — BadF/BadG/BcrA/BcrD-like

Domain ID domain_id	d1zxoa2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamily	c.55.1 — Actin-like ATPase domain
Family Family family	c.55.1.5 — BadF/BadG/BcrA/BcrD-like

Domain ID domain_id	d1zxob1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamily	c.55.1 — Actin-like ATPase domain
Family Family family	c.55.1.5 — BadF/BadG/BcrA/BcrD-like

Domain ID domain_id	d1zxob2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamily	c.55.1 — Actin-like ATPase domain
Family Family family	c.55.1.5 — BadF/BadG/BcrA/BcrD-like

Domain ID domain_id	d1zxoc1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamily	c.55.1 — Actin-like ATPase domain
Family Family family	c.55.1.5 — BadF/BadG/BcrA/BcrD-like

Domain ID domain_id	d1zxoc2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamily	c.55.1 — Actin-like ATPase domain
Family Family family	c.55.1.5 — BadF/BadG/BcrA/BcrD-like

Domain ID domain_id	d1zxod1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamily	c.55.1 — Actin-like ATPase domain
Family Family family	c.55.1.5 — BadF/BadG/BcrA/BcrD-like

Domain ID domain_id	d1zxod2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamily	c.55.1 — Actin-like ATPase domain
Family Family family	c.55.1.5 — BadF/BadG/BcrA/BcrD-like

Domain ID domain_id	d1zxoe1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamily	c.55.1 — Actin-like ATPase domain
Family Family family	c.55.1.5 — BadF/BadG/BcrA/BcrD-like

Domain ID domain_id	d1zxoe2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamily	c.55.1 — Actin-like ATPase domain
Family Family family	c.55.1.5 — BadF/BadG/BcrA/BcrD-like

Domain ID domain_id	d1zxof1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamily	c.55.1 — Actin-like ATPase domain
Family Family family	c.55.1.5 — BadF/BadG/BcrA/BcrD-like

Domain ID domain_id	d1zxof2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamily	c.55.1 — Actin-like ATPase domain
Family Family family	c.55.1.5 — BadF/BadG/BcrA/BcrD-like

CATH v4.4 (18 domains)

Domain ID domain_id	1zxoA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily	40 — ATPase, nucleotide binding domain

Domain ID domain_id	1zxoA02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily	40 — ATPase, nucleotide binding domain

Domain ID domain_id	1zxoA03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	720 — Transcription Termination Factor Rho, Rna-binding Domain; Chain A, Domain 1
Homologous superfamily homologous superfamily	160 —

Domain ID domain_id	1zxoB01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily	40 — ATPase, nucleotide binding domain

Domain ID domain_id	1zxoB02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily	40 — ATPase, nucleotide binding domain

Domain ID domain_id	1zxoB03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	720 — Transcription Termination Factor Rho, Rna-binding Domain; Chain A, Domain 1
Homologous superfamily homologous superfamily	160 —

Domain ID domain_id	1zxoC01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily	40 — ATPase, nucleotide binding domain

Domain ID domain_id	1zxoC02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily	40 — ATPase, nucleotide binding domain

Domain ID domain_id	1zxoC03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	720 — Transcription Termination Factor Rho, Rna-binding Domain; Chain A, Domain 1
Homologous superfamily homologous superfamily	160 —

Domain ID domain_id	1zxoD01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily	40 — ATPase, nucleotide binding domain

Domain ID domain_id	1zxoD02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily	40 — ATPase, nucleotide binding domain

Domain ID domain_id	1zxoD03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	720 — Transcription Termination Factor Rho, Rna-binding Domain; Chain A, Domain 1
Homologous superfamily homologous superfamily	160 —

Domain ID domain_id	1zxoE01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily	40 — ATPase, nucleotide binding domain

Domain ID domain_id	1zxoE02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily	40 — ATPase, nucleotide binding domain

Domain ID domain_id	1zxoE03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	720 — Transcription Termination Factor Rho, Rna-binding Domain; Chain A, Domain 1
Homologous superfamily homologous superfamily	160 —

Domain ID domain_id	1zxoF01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily	40 — ATPase, nucleotide binding domain

Domain ID domain_id	1zxoF02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily	40 — ATPase, nucleotide binding domain

Domain ID domain_id	1zxoF03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	720 — Transcription Termination Factor Rho, Rna-binding Domain; Chain A, Domain 1
Homologous superfamily homologous superfamily	160 —

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Unit-cell length a length_a	158.154 Å
Unit-cell length b length_b	158.154 Å
Unit-cell length c length_c	275.531 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	54

Space group space_group	H 3
Space-group number int_tables_number	146
Crystal system crystal_system	—

Resolution resolution	3.200 Å
Low-resolution limit resolution_low	25.560 Å
R factor r_factor	0.2410
R_work r_work	0.2410
R_free r_free	0.2970

Description description	conserved hypothetical protein Q8A1P1
Molecular weight formula_weight	32492.7 kDa
Source method src_method	man
Copy count entity_count	6

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,F,B,D,C,E
Atom count atom_count	13033

X-ray Crystal Structure of Protein Q8A1P1 from Bacteroides thetaiotaomicron. Northeast Structural Genomics Consortium Target BtR25.

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

conserved hypothetical protein Q8A1P1

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

1zxo__assembly_1__model_1

1zxo__assembly_1__model_1 | I(q)

1zxo__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) 30 domains

SCOP 2.08 (12 domains)

CATH v4.4 (18 domains)

7. Citations (1)

Source organism organism	Bacteroides thetaiotaomicron
NCBI taxonomy ID ncbi_taxonomy_id	818
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	195

X-ray Crystal Structure of Protein Q8A1P1 from Bacteroides thetaiotaomicron. Northeast Structural Genomics Consortium Target BtR25.

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

conserved hypothetical protein Q8A1P1

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

1zxo__assembly_1__model_1

1zxo__assembly_1__model_1 | I(q)

1zxo__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) 30 domains

SCOP 2.08 (12 domains)

CATH v4.4 (18 domains)

7. Citations (1)