SAXSdb — 2pz9

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

Putative regulatory protein

Streptomyces coelicolor A3(2)

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	SULFATE ION × 8 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q9EWE9_STRCO
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–226； UniProt 1–226

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	2pz9
Deposition date deposition_date	2007-05-17
Structure title title	Crystal structure of putative transcriptional regulator SCO4942 from Streptomyces coelicolor
Keywords keywords	;STRUCTURAL GENOMICS, TRANSCRIPTIONAL REGULATOR, STREPTOMYCES COELICOLOR A3(2), PSI, PROTEIN STRUCTURE INITIATIVE, MIDWEST CENTER FOR STRUCTURAL GENOMICS, MCSG, TRANSCRIPTION ;; TRANSCRIPTION
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.

2pz9__assembly_1__model_1

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

Download this curve (.dat)

2pz9__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2pz9__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	23.36 Å
Rg (electron density)	22.10 Å
Total Rg	23.01 Å
Atom count	2822
Residues	354
Excluded volume	49850 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2pz9__assembly_1__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 (3)

Entity 1 Entity 1 polymer

Description description	Putative regulatory protein
Molecular weight formula_weight	24736.2 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	1426

MVAYPGPMPRSPSPGQTPDAPTSGGGSTDSTRQRIVAAAKEEFARHGIAGARVDRIAKQARTSKERVYAYFRSKEALYAHVAERETTALIEATQLDPADLPGYAGILFDHFAARPDHYRLITWGRLELAESADNTSGPLQATIAGKLDKLRDAQRIGLLDPAWDPVDVLALINQIAMTWAGQPEIAAAAADQAVDPSVTARRAALVTAVEHMFPRPDRDQRPNRLT

Source Source

Source organism organism	Streptomyces coelicolor A3(2)
NCBI taxonomy ID ncbi_taxonomy_id	100226
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	10

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6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

Domain ID domain_id	2pz9A00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	357 — Tetracycline Repressor; domain 2
Homologous superfamily homologous superfamily	10 — Tetracycline Repressor, domain 2

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Unit-cell length a length_a	66.960 Å
Unit-cell length b length_b	66.960 Å
Unit-cell length c length_c	104.345 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	6

Space group space_group	P 32 2 1
Space-group number int_tables_number	154
Crystal system crystal_system	—

Resolution resolution	2.800 Å
Low-resolution limit resolution_low	38.780 Å
R factor r_factor	0.2160
R_work r_work	0.2130
R_free r_free	0.2690

Crystal structure of putative transcriptional regulator SCO4942 from Streptomyces coelicolor

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

Putative regulatory 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

2pz9__assembly_1__model_1

2pz9__assembly_1__model_1 | I(q)

2pz9__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

7. Citations (1)

Crystal structure of putative transcriptional regulator SCO4942 from Streptomyces coelicolor

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

Putative regulatory 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

2pz9__assembly_1__model_1

2pz9__assembly_1__model_1 | I(q)

2pz9__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

7. Citations (1)