SAXSdb — 3fkj

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

Putative phosphosugar isomerases

Salmonella typhimurium LT2

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q8ZR50_SALTY
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 20–347； UniProt 1–328 Author chain B； PDBConstruct 20–347； UniProt 1–328

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	3fkj
Deposition date deposition_date	2008-12-16
Structure title title	Crystal structure of a putative phosphosugar isomerase (stm_0572) from salmonella typhimurium lt2 at 2.12 A resolution
Keywords keywords	Structural genomics, Joint Center for Structural Genomics, JCSG, Protein Structure Initiative, PSI-2, isomerase; ISOMERASE
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.

3fkj__assembly_1__model_1

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

Download this curve (.dat)

3fkj__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3fkj__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	25.10 Å
Rg (electron density)	23.94 Å
Total Rg	24.77 Å
Atom count	5194
Residues	649
Excluded volume	92229 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3fkj__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 phosphosugar isomerases
Molecular weight formula_weight	39359.3 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	5520

MGSDKIHHHHHHENLYFQGMSVAHENARRIISDILGKQNIERVWFVGCGGSLTGFWPGKYFLDCEASKLAVGYITSNEFVHATPKALGKNSVVILASQQGNTAETVAAARVAREKGAATIGLVYQPDTPLCEYSDYIIEYQWARYPETVDPAQQKAAYSLWLALEILAQTEGYAQYDELVSAFGRFSDVVHGAQRQVQEDAQRFAAEWKDEKVVYMMGSGPSFGAAHQESICILLEMQWINSASIHSGEYFHGPFEITEPGTPFILLQSSGRTRPLDDRAIRFIERYQGKLQLIDADKLGIQDLSTDVGEYFCGLLHNCVLDVYNLALATARNHPLTTRRYMWKVEY

Source Source

Source organism organism	Salmonella typhimurium LT2
NCBI taxonomy ID ncbi_taxonomy_id	99287
Host organism host_organism	Escherichia Coli

Entity 2 Entity 2 non-polymer

Description description	THIOCYANATE ION
Molecular weight formula_weight	58.1 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	316

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6. Fold Classification (SCOP + CATH) 6 domains

CATH v4.4 (6 domains)

Domain ID domain_id	3fkjA01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	10490 — Glucose-6-phosphate isomerase like protein; domain 1

Domain ID domain_id	3fkjA02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily	2240 —

Domain ID domain_id	3fkjA03
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	12570 —

Domain ID domain_id	3fkjB01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	10490 — Glucose-6-phosphate isomerase like protein; domain 1

Domain ID domain_id	3fkjB02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily	2240 —

Domain ID domain_id	3fkjB03
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	12570 —

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Unit-cell length a length_a	63.880 Å
Unit-cell length b length_b	63.880 Å
Unit-cell length c length_c	295.930 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	12

Space group space_group	P 65
Space-group number int_tables_number	170
Crystal system crystal_system	—

Resolution resolution	2.120 Å
Low-resolution limit resolution_low	29.323 Å
R factor r_factor	0.1670
R_work r_work	0.1650
R_free r_free	0.2120

Crystal structure of a putative phosphosugar isomerase (stm_0572) from salmonella typhimurium lt2 at 2.12 A resolution

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

Putative phosphosugar isomerases

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

3fkj__assembly_1__model_1

3fkj__assembly_1__model_1 | I(q)

3fkj__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) 6 domains

CATH v4.4 (6 domains)

7. Citations (1)

Crystal structure of a putative phosphosugar isomerase (stm_0572) from salmonella typhimurium lt2 at 2.12 A resolution

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

Putative phosphosugar isomerases

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

3fkj__assembly_1__model_1

3fkj__assembly_1__model_1 | I(q)

3fkj__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) 6 domains

CATH v4.4 (6 domains)

7. Citations (1)