SAXSdb — 8r2p

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

Putrescine aminotransferase,Immunoglobulin G-binding protein A

Escherichia coli

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Homooligomer	Protein 4	PYRIDOXAL-5'-PHOSPHATE × 4 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SPA_STAAU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 472–523； UniProt 218–269 Author chain B； PDBConstruct 472–523； UniProt 218–269 Author chain C； PDBConstruct 472–523； UniProt 218–269 Author chain D； PDBConstruct 472–523； UniProt 218–269

Putrescine aminotransferase,Immunoglobulin G-binding protein A

Escherichia coli

UniProt P42588

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Homooligomer	Protein 4	PYRIDOXAL-5'-PHOSPHATE × 4 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PAT_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 14–464； UniProt 7–457 Author chain B； PDBConstruct 14–464； UniProt 7–457 Author chain C； PDBConstruct 14–464； UniProt 7–457 Author chain D； PDBConstruct 14–464； UniProt 7–457

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	8r2p
Deposition date deposition_date	2023-11-07
Last revision last_revision	2024-11-13
Structure title title	YZwIdeal x16 a scaffold for cryo-EM of small proteins of interest crystallizing in space group 19 (P 21 21 21)
Keywords keywords	Scaffold Fusion protein, STRUCTURAL PROTEIN; STRUCTURAL 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.

8r2p__assembly_1__model_1

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

Download this curve (.dat)

8r2p__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

8r2p__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	39.23 Å
Rg (electron density)	38.50 Å
Total Rg	38.97 Å
Atom count	14379
Residues	1884
Excluded volume	257370 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`8r2p__assembly_1__model_1`	tetrameric （4）	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	Putrescine aminotransferase,Immunoglobulin G-binding protein A
Molecular weight formula_weight	57054.1 kDa
EC 编号 ec_number	2.6.1.82,2.6.1.29
Mutation mutation	G487A
Source method src_method	man
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	16262

GSSHHHHHHYYLESASALACSAHALNLIEKRTLDHEEMKALNREVIEYFKEHVNPGFLEYRKSVTAGGDYGAVEWQAGSLNTLVDTQGQEFIDCLGGFGIFNVGHRNPVVVSAVQNQLAKQPLHSQELLDPLRAMLAKTLAALTPGKLKYSFFCNSGTESVEAALKLAKAYQSPRGKFTFIATSGAFHGKSLGALSATAKSTFRKPFMPLLPGFRHVPFGNIEAMRTALNECKKTGDDVAAVILEPIQGEGGVILPPPGYLTAVRKLCDEFGALMILDEVQTGMGRTGKMFACEHENVQPDILCLAKALGGGVMPIGATIATEEVFSVLFDNPFLHTTTFGGNPLACAAALATINVLLEQNLPAQAEQKGDMLLDGFRQLAREYPDLVQEARGKGMLMAIEFVDNEIGYNFASEMFRQRVLVAGTLNNAKTIRIEPPLTLTIEQCELVIKAARKALAAMRVSVEEALEVSAKEQQNAFYEILHLPNLNEEQRNAFIQSLKDDPSQSANLLAEAKKLNDAQAPK

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	PYRIDOXAL-5'-PHOSPHATE
Molecular weight formula_weight	247.1 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	1507

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Unit-cell length a length_a	73.260 Å
Unit-cell length b length_b	196.760 Å
Unit-cell length c length_c	208.053 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	16

Resolution resolution	2.220 Å
Low-resolution limit resolution_low	48.910 Å
R factor r_factor	0.1885
R_work r_work	0.1863
R_free r_free	0.2304

YZwIdeal x16 a scaffold for cryo-EM of small proteins of interest crystallizing in space group 19 (P 21 21 21)

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

Putrescine aminotransferase,Immunoglobulin G-binding protein A

State in the Current Structure

Other States of the Same Protein in the Database

Putrescine aminotransferase,Immunoglobulin G-binding protein A

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

8r2p__assembly_1__model_1

8r2p__assembly_1__model_1 | I(q)

8r2p__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

7. Citations (1)

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

YZwIdeal x16 a scaffold for cryo-EM of small proteins of interest crystallizing in space group 19 (P 21 21 21)

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

Putrescine aminotransferase,Immunoglobulin G-binding protein A

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Putrescine aminotransferase,Immunoglobulin G-binding protein A

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

8r2p__assembly_1__model_1

8r2p__assembly_1__model_1 | I(q)

8r2p__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

7. Citations (1)