SAXSdb — 1auu

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

SACY

Bacillus subtilis

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SACY_BACSU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–55； UniProt 1–55 Author chain B； PDBConstruct 1–55； UniProt 1–55

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	1auu
Deposition date deposition_date	1997-09-02
Structure title title	SOLUTION STRUCTURE OF THE RNA-BINDING DOMAIN OF THE ANTITERMINATOR PROTEIN SACY, NMR, 10 STRUCTURES
Keywords keywords	ANTITERMINATION, RNA BINDING DOMAIN, TRANSCRIPTION REGULATION; TRANSCRIPTION REGULATION
Experimental Method method	SOLUTION NMR

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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.

1auu__assembly_1__model_1

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

Download this curve (.dat)

1auu__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1auu__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	15.49 Å
Rg (electron density)	14.13 Å
Total Rg	15.31 Å
Atom count	1852
Residues	110
Excluded volume	16237 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1auu__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	2	`1auu__assembly_1__model_2`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	3	`1auu__assembly_1__model_3`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	4	`1auu__assembly_1__model_4`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	5	`1auu__assembly_1__model_5`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	6	`1auu__assembly_1__model_6`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	7	`1auu__assembly_1__model_7`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	8	`1auu__assembly_1__model_8`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	9	`1auu__assembly_1__model_9`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	10	`1auu__assembly_1__model_10`	dimeric （2）	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 (1)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1auua_
Class class	b — All beta proteins
Fold Fold fold	b.35 — GroES-like
Superfamily Superfamily superfamily	b.35.2 — SacY-like RNA-binding domain
Family Family family	b.35.2.1 — BglG-like antiterminator proteins

Domain ID domain_id	d1auub_
Class class	b — All beta proteins
Fold Fold fold	b.35 — GroES-like
Superfamily Superfamily superfamily	b.35.2 — SacY-like RNA-binding domain
Family Family family	b.35.2.1 — BglG-like antiterminator proteins

CATH v4.4 (2 domains)

Domain ID domain_id	1auuA00
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	24 — Transcription Regulation, Sacy; Chain A
Homologous superfamily homologous superfamily	10 — CAT RNA-binding domain

Domain ID domain_id	1auuB00
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	24 — Transcription Regulation, Sacy; Chain A
Homologous superfamily homologous superfamily	10 — CAT RNA-binding domain

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Unit-cell length a length_a	1.000 Å
Unit-cell length b length_b	1.000 Å
Unit-cell length c length_c	1.000 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	1

Space group space_group	P 1
Space-group number int_tables_number	1
Crystal system crystal_system	—

Description description	SACY
Molecular weight formula_weight	6365.5 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	18520

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

SOLUTION STRUCTURE OF THE RNA-BINDING DOMAIN OF THE ANTITERMINATOR PROTEIN SACY, NMR, 10 STRUCTURES

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

SACY

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

1auu__assembly_1__model_1

1auu__assembly_1__model_1 | I(q)

1auu__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

SOLUTION STRUCTURE OF THE RNA-BINDING DOMAIN OF THE ANTITERMINATOR PROTEIN SACY, NMR, 10 STRUCTURES

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

SACY

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

1auu__assembly_1__model_1

1auu__assembly_1__model_1 | I(q)

1auu__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)