SAXSdb — 1sf9

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

yfhH hypothetical protein

Bacillus subtilis

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	PLATINUM (II) ION × 1 CHLORIDE ION × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	O31576_BACSU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 25–128； UniProt 1–104

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	1sf9
Deposition date deposition_date	2004-02-19
Structure title title	Crystal Structure of Bacillus subtilis YfhH Protein : Putative Transcriptional Regulator
Keywords keywords	Structural Genomics, unknown function, PSI, Protein Structure Initiative, Midwest Center for Structural Genomics, MCSG; 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.

1sf9__assembly_1__model_1

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

Download this curve (.dat)

1sf9__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1sf9__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	16.86 Å
Rg (electron density)	15.79 Å
Total Rg	16.74 Å
Atom count	955
Residues	118
Excluded volume	16865 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1sf9__assembly_1__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 (4)

Entity 1 Entity 1 polymer

Description description	yfhH hypothetical protein
Molecular weight formula_weight	14766.3 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	1268

MHHHHHHSSGVDLGTENLYFQSNAMEKRYSQMTPHELNTEIALLSEKARKAEQHGIINELAVLERKITMAKAYLLNPEDYSPGETYRVENTEDEFTISYLNGVFAWGYRTSSPQQEEALPISVLQEKE

Source Source

Source organism organism	Bacillus subtilis
NCBI taxonomy ID ncbi_taxonomy_id	1423
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	PLATINUM (II) ION
Molecular weight formula_weight	195.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	175

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1sf9a1
Class class	b — All beta proteins
Fold Fold fold	b.34 — SH3-like barrel
Superfamily Superfamily superfamily	b.34.15 — Hypothetical protein YfhH
Family Family family	b.34.15.1 — Hypothetical protein YfhH

Domain ID domain_id	d1sf9a2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

CATH v4.4 (2 domains)

Domain ID domain_id	1sf9A01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	287 — Helix Hairpins
Homologous superfamily homologous superfamily	880 — Hypothetical protein YfhH domain

Domain ID domain_id	1sf9A02
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	30 — SH3 type barrels.
Homologous superfamily homologous superfamily	340 — Hypothetical protein YfhH like domains

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Unit-cell length a length_a	56.142 Å
Unit-cell length b length_b	46.486 Å
Unit-cell length c length_c	50.511 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	114.98 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

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

Resolution resolution	1.710 Å
Low-resolution limit resolution_low	25.000 Å
R factor r_factor	—
R_work r_work	0.1715
R_free r_free	0.2038

Crystal Structure of Bacillus subtilis YfhH Protein : Putative Transcriptional Regulator

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

yfhH 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

1sf9__assembly_1__model_1

1sf9__assembly_1__model_1 | I(q)

1sf9__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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Crystal Structure of Bacillus subtilis YfhH Protein : Putative Transcriptional Regulator

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

yfhH 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

1sf9__assembly_1__model_1

1sf9__assembly_1__model_1 | I(q)

1sf9__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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)