SAXSdb — 1tt4

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

putative cytoplasmic protein

Salmonella typhimurium

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CAAL_SALTY
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 25–396； UniProt 1–372 Author chain B； PDBConstruct 25–396； UniProt 1–372

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	1tt4
Deposition date deposition_date	2004-06-21
Structure title title	Structure of NP459575, a predicted glutathione synthase from Salmonella typhimurium
Keywords keywords	;NP459575, glutathione synthase, structural genomics, protein structure initiative, MCSG, PSI, Midwest Center for Structural Genomics, UNKNOWN FUNCTION ;; STRUCTURAL GENOMICS, UNKNOWN FUNCTION
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.

1tt4__assembly_1__model_1

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

Download this curve (.dat)

1tt4__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1tt4__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	27.78 Å
Rg (electron density)	26.74 Å
Total Rg	27.56 Å
Atom count	5555
Residues	708
Excluded volume	98228 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1tt4__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 (4)

Entity 1 Entity 1 polymer

Description description	putative cytoplasmic protein
Molecular weight formula_weight	44385.9 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	5624

MHHHHHHSSGVDLGTENLYFQSNAMALNDFHVSEPYTLGIELEMQVINPPGYDLSQDSSTLIDAVKPQLTAGEIKHDITESMLEMATGVCRDIDQAAAQLSAMQHVILQAASEHHLGICGGGTHPFQKWQRQEVCDNERYQRTLENFGYLIQQATVFGQHVHVGCANGDDAIYLLHGLSHFVPHFIALSAASPYMQGADTRFACARLNIFSAFPDNGPMPWVSNWQEFAGLFRRLSYTTMIDSIKDLHWDIRPSPAFGTVEVRVMDTPLTLDHAINMAGLIQATAHWLLTERPFKPQEQDYLLYKFNRFQACRYGLEGVLTDAYTGDRRRLADDTLRLLDNVTPSARKLGADSAIDALRLQVKKGGNEAQYMREFIADGGSLIGLVQKHCEIWAGQ

Source Source

Source organism organism	Salmonella typhimurium
NCBI taxonomy ID ncbi_taxonomy_id	99287
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	39

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1tt4a_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.128 — Glutamine synthetase/guanido kinase
Superfamily Superfamily superfamily	d.128.1 — Glutamine synthetase/guanido kinase
Family Family family	d.128.1.3 — Glutamate-cysteine ligase family 2 (GCS2)

Domain ID domain_id	d1tt4b_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.128 — Glutamine synthetase/guanido kinase
Superfamily Superfamily superfamily	d.128.1 — Glutamine synthetase/guanido kinase
Family Family family	d.128.1.3 — Glutamate-cysteine ligase family 2 (GCS2)

CATH v4.4 (2 domains)

Domain ID domain_id	1tt4A00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	1tt4B00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	20 —

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Unit-cell length a length_a	188.929 Å
Unit-cell length b length_b	188.929 Å
Unit-cell length c length_c	188.929 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	48

Space group space_group	I 2 3
Space-group number int_tables_number	197
Crystal system crystal_system	—

Resolution resolution	2.801 Å
Low-resolution limit resolution_low	19.920 Å
R factor r_factor	0.2113
R_work r_work	0.2088
R_free r_free	0.2577

Structure of NP459575, a predicted glutathione synthase from Salmonella typhimurium

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

putative cytoplasmic 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

1tt4__assembly_1__model_1

1tt4__assembly_1__model_1 | I(q)

1tt4__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Structure of NP459575, a predicted glutathione synthase from Salmonella typhimurium

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

putative cytoplasmic 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

1tt4__assembly_1__model_1

1tt4__assembly_1__model_1 | I(q)

1tt4__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)