SAXSdb — 2afc

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

conserved hypothetical protein

Bacteroides thetaiotaomicron

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q8A8B0_BACTN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–155； UniProt 1–155 Author chain B； PDBConstruct 1–155； UniProt 1–155

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	2afc
Deposition date deposition_date	2005-07-25
Structure title title	X-Ray Crystal Structure of Protein Q8A8B0 from Bacteroides thetaiotaomicron. Northeast Structural Genomics Consortium Target BtR9.
Keywords keywords	;Q8A8B0 BtR9 NESG X-Ray, Structural Genomics, PSI, Protein Structure Initiative, Northeast Structural Genomics Consortium, UNKNOWN FUNCTION ;; STRUCTURAL GENOMICS, 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.

2afc__assembly_1__model_1

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

Download this curve (.dat)

2afc__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2afc__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	15.90 Å
Rg (electron density)	14.70 Å
Total Rg	15.90 Å
Atom count	1206
Residues	149
Excluded volume	21871 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2afc__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2afc__assembly_2__model_1`	monomeric （1）	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) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d2afca1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.50 — Macro domain-like
Superfamily Superfamily superfamily	c.50.1 — Macro domain-like
Family Family family	c.50.1.2 — Macro domain

Domain ID domain_id	d2afcb_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.50 — Macro domain-like
Superfamily Superfamily superfamily	c.50.1 — Macro domain-like
Family Family family	c.50.1.2 — Macro domain

CATH v4.4 (2 domains)

Domain ID domain_id	2afcA00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	220 — Leucine Aminopeptidase, subunit E; domain 1
Homologous superfamily homologous superfamily	10 — Leucine Aminopeptidase, subunit E, domain 1

Domain ID domain_id	2afcB00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	220 — Leucine Aminopeptidase, subunit E; domain 1
Homologous superfamily homologous superfamily	10 — Leucine Aminopeptidase, subunit E, domain 1

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Unit-cell length a length_a	128.439 Å
Unit-cell length b length_b	36.443 Å
Unit-cell length c length_c	84.028 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	129.03 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	2.500 Å
Low-resolution limit resolution_low	27.610 Å
R factor r_factor	0.2150
R_work r_work	0.2150
R_free r_free	0.2880

Description description	conserved hypothetical protein
Molecular weight formula_weight	19233.4 kDa
Source method src_method	man
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	2544

X-Ray Crystal Structure of Protein Q8A8B0 from Bacteroides thetaiotaomicron. Northeast Structural Genomics Consortium Target BtR9.

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

conserved hypothetical 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

2afc__assembly_1__model_1

2afc__assembly_1__model_1 | I(q)

2afc__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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 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	132

X-Ray Crystal Structure of Protein Q8A8B0 from Bacteroides thetaiotaomicron. Northeast Structural Genomics Consortium Target BtR9.

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

conserved hypothetical 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

2afc__assembly_1__model_1

2afc__assembly_1__model_1 | I(q)

2afc__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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)