SAXSdb — 1oy1

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

PUTATIVE sigma cross-reacting protein 27A

Escherichia coli

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ELBB_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–220； UniProt 1–220 Author chain B； PDBConstruct 1–220； UniProt 1–220 Author chain C； PDBConstruct 1–220； UniProt 1–220 Author chain D； PDBConstruct 1–220； UniProt 1–220

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	1oy1
Deposition date deposition_date	2003-04-03
Structure title title	X-Ray Structure Of ElbB From E. Coli. Northeast Structural Genomics Research Consortium (Nesg) Target Er105
Keywords keywords	STRUCTURAL GENOMICS, ER105, PSI, Protein Structure Initiative, Northeast Structural Genomics Consortium, NESG, UNKNOWN FUNCTION; UNKNOWN FUNCTION, STRUCTURAL GENOMICS
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.

1oy1__assembly_1__model_1

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

Download this curve (.dat)

1oy1__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1oy1__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	22.89 Å
Rg (electron density)	21.92 Å
Total Rg	22.63 Å
Atom count	3262
Residues	426
Excluded volume	58725 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1oy1__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1oy1__assembly_2__model_1`	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 (2)

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6. Fold Classification (SCOP + CATH) 10 domains

SCOP 2.08 (6 domains)

Domain ID domain_id	d1oy1a1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.23 — Flavodoxin-like
Superfamily Superfamily superfamily	c.23.16 — Class I glutamine amidotransferase-like
Family Family family	c.23.16.2 — DJ-1/PfpI

Domain ID domain_id	d1oy1a2
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

Domain ID domain_id	d1oy1b1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.23 — Flavodoxin-like
Superfamily Superfamily superfamily	c.23.16 — Class I glutamine amidotransferase-like
Family Family family	c.23.16.2 — DJ-1/PfpI

Domain ID domain_id	d1oy1b2
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

Domain ID domain_id	d1oy1c_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.23 — Flavodoxin-like
Superfamily Superfamily superfamily	c.23.16 — Class I glutamine amidotransferase-like
Family Family family	c.23.16.2 — DJ-1/PfpI

Domain ID domain_id	d1oy1d_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.23 — Flavodoxin-like
Superfamily Superfamily superfamily	c.23.16 — Class I glutamine amidotransferase-like
Family Family family	c.23.16.2 — DJ-1/PfpI

CATH v4.4 (4 domains)

Domain ID domain_id	1oy1A00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	880 — Class I glutamine amidotransferase (GATase) domain

Domain ID domain_id	1oy1B00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	880 — Class I glutamine amidotransferase (GATase) domain

Domain ID domain_id	1oy1C00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	880 — Class I glutamine amidotransferase (GATase) domain

Domain ID domain_id	1oy1D00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	880 — Class I glutamine amidotransferase (GATase) domain

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Unit-cell length a length_a	99.108 Å
Unit-cell length b length_b	105.522 Å
Unit-cell length c length_c	165.102 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	2.950 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	—
R_work r_work	0.2160
R_free r_free	0.2650

Description description	PUTATIVE sigma cross-reacting protein 27A
Molecular weight formula_weight	24794.3 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	6484

X-Ray Structure Of ElbB From E. Coli. Northeast Structural Genomics Research Consortium (Nesg) Target Er105

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

PUTATIVE sigma cross-reacting protein 27A

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

1oy1__assembly_1__model_1

1oy1__assembly_1__model_1 | I(q)

1oy1__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) 10 domains

SCOP 2.08 (6 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	83333
Host organism host_organism	Escherichia coli BL21(DE3)

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	14

X-Ray Structure Of ElbB From E. Coli. Northeast Structural Genomics Research Consortium (Nesg) Target Er105

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

PUTATIVE sigma cross-reacting protein 27A

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

1oy1__assembly_1__model_1

1oy1__assembly_1__model_1 | I(q)

1oy1__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) 10 domains

SCOP 2.08 (6 domains)

CATH v4.4 (4 domains)

7. Citations (1)