SAXSdb — 4b0e

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

F1 CAPSULE-ANCHORING PROTEIN

YERSINIA PESTIS

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
3	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count
4	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	CAF1A_YERPE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–136； UniProt 23–158 Author chain B； PDBConstruct 1–136； UniProt 23–158 Author chain C； PDBConstruct 1–136； UniProt 23–158 Author chain D； PDBConstruct 1–136； UniProt 23–158

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	4b0e
Deposition date deposition_date	2012-07-02
Structure title title	Crystal structure of the Caf1A usher protein N-terminal domain from Yersinia pestis
Keywords keywords	TRANSPORT PROTEIN, CHAPERONE-USHER PATHWAY, PILI ASSEMBLY; 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.

4b0e__assembly_4__model_1

Assembly 4 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

4b0e__assembly_4__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4b0e__assembly_4__model_1 | P(r) · Pending

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

Rg（Guinier）	15.11 Å
Rg (electron density)	13.69 Å
Total Rg	14.93 Å
Atom count	800
Residues	100
Excluded volume	14376 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4b0e__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`4b0e__assembly_2__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`4b0e__assembly_3__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
4	1	`4b0e__assembly_4__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) 5 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d4b0ed_
Class class	b — All beta proteins
Fold Fold fold	b.167 — FimD N-terminal domain-like
Superfamily Superfamily superfamily	b.167.1 — FimD N-terminal domain-like
Family Family family	b.167.1.0 — automated matches

CATH v4.4 (4 domains)

Domain ID domain_id	4b0eA00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	410 — PapC, N-terminal domain

Domain ID domain_id	4b0eB00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	410 — PapC, N-terminal domain

Domain ID domain_id	4b0eC00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	410 — PapC, N-terminal domain

Domain ID domain_id	4b0eD00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	410 — PapC, N-terminal domain

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Unit-cell length a length_a	61.858 Å
Unit-cell length b length_b	68.587 Å
Unit-cell length c length_c	192.245 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	32

Space group space_group	C 2 2 21
Space-group number int_tables_number	20
Crystal system crystal_system	—

Resolution resolution	2.000 Å
Low-resolution limit resolution_low	30.000 Å
R factor r_factor	0.2049
R_work r_work	0.2052
R_free r_free	0.2614

Description description	F1 CAPSULE-ANCHORING PROTEIN
Molecular weight formula_weight	15386.4 kDa
Source method src_method	man
Copy count entity_count	4

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	3307

Crystal structure of the Caf1A usher protein N-terminal domain from Yersinia pestis

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

F1 CAPSULE-ANCHORING 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

4b0e__assembly_4__model_1

4b0e__assembly_4__model_1 | I(q)

4b0e__assembly_4__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) 5 domains

SCOP 2.08 (1 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Source organism organism	YERSINIA PESTIS
NCBI taxonomy ID ncbi_taxonomy_id	632
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	235

Crystal structure of the Caf1A usher protein N-terminal domain from Yersinia pestis

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

F1 CAPSULE-ANCHORING 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

4b0e__assembly_4__model_1

4b0e__assembly_4__model_1 | I(q)

4b0e__assembly_4__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) 5 domains

SCOP 2.08 (1 domains)

CATH v4.4 (4 domains)

7. Citations (1)