3fky

Crystal structure of the glutamine synthetase Gln1deltaN18 from the yeast Saccharomyces cerevisiae

Method: X-RAY DIFFRACTION

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

Glutamine synthetase

Saccharomyces cerevisiae

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 10	CITRATE ANION × 10	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 10	CITRATE ANION × 10	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	GLNA_YEAST
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–370； UniProt 1–370 Author chain B； PDBConstruct 1–370； UniProt 1–370 Author chain C； PDBConstruct 1–370； UniProt 1–370 Author chain D； PDBConstruct 1–370； UniProt 1–370 Author chain E； PDBConstruct 1–370； UniProt 1–370 Author chain F； PDBConstruct 1–370； UniProt 1–370 Author chain G； PDBConstruct 1–370； UniProt 1–370 Author chain H； PDBConstruct 1–370； UniProt 1–370 Author chain I； PDBConstruct 1–370； UniProt 1–370 Author chain J； PDBConstruct 1–370； UniProt 1–370 Author chain K； PDBConstruct 1–370； UniProt 1–370 Author chain L； PDBConstruct 1–370； UniProt 1–370 Author chain M； PDBConstruct 1–370； UniProt 1–370 Author chain N； PDBConstruct 1–370； UniProt 1–370 Author chain O； PDBConstruct 1–370； UniProt 1–370 Author chain P； PDBConstruct 1–370； UniProt 1–370 Author chain Q； PDBConstruct 1–370； UniProt 1–370 Author chain R； PDBConstruct 1–370； UniProt 1–370 Author chain S； PDBConstruct 1–370； UniProt 1–370 Author chain T； PDBConstruct 1–370； UniProt 1–370

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	3fky
Deposition date deposition_date	2008-12-18
Structure title title	Crystal structure of the glutamine synthetase Gln1deltaN18 from the yeast Saccharomyces cerevisiae
Keywords keywords	BETA-GRASP, CATALYTIC DOMAIN, Acetylation, Cytoplasm, Ligase, Ubl conjugation; LIGASE
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.

3fky__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

3fky__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3fky__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	47.56 Å
Rg (electron density)	46.60 Å
Total Rg	47.06 Å
Atom count	26740
Residues	3360
Excluded volume	469700 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3fky__assembly_1__model_1`	decameric （10）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3fky__assembly_2__model_1`	decameric （10）	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)

Entity 1 Entity 1 polymer

Description description	Glutamine synthetase
Molecular weight formula_weight	41759.9 kDa
EC 编号 ec_number	6.3.1.2
Source method src_method	man
Copy count entity_count	20

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T
Atom count atom_count	53518

MAEASIEKTQILQKYLELDQRGRIIAEYVWIDGTGNLRSKGRTLKKRITSIDQLPEWNFDGSSTNQAPGHDSDIYLKPVAYYPDPFRRGDNIVVLAACYNNDGTPNKFNHRHEAAKLFAAHKDEEIWFGLEQEYTLFDMYDDVYGWPKGGYPAPQGPYYCGVGAGKVYARDMIEAHYRACLYAGLEISGINAEVMPSQWEFQVGPCTGIDMGDQLWMARYFLHRVAEEFGIKISFHPKPLKGDWNGAGCHANVSTKEMRQPGGTKYIEQAIEKLSKRHAEHIKLYGSDNDMRLTGRHETASMTAFSSGVANRGSSIRIPRSVAKEGYGYFEDRRPASNIDPYLVTGIMCETVCGAIDNADMTKEFERESS

Source Source

Source organism organism	Saccharomyces cerevisiae
Common name common_name	yeast
NCBI taxonomy ID ncbi_taxonomy_id	4932
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	CITRATE ANION
Molecular weight formula_weight	189.1 kDa
Source method src_method	syn
Copy count entity_count	20

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6. Fold Classification (SCOP + CATH) 40 domains

CATH v4.4 (40 domains)

Domain ID domain_id	3fkyA01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	70 — Glutamine synthetase, N-terminal domain

Domain ID domain_id	3fkyA02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Glutamine synthetase/guanido kinase, catalytic domain

Domain ID domain_id	3fkyB01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	70 — Glutamine synthetase, N-terminal domain

Domain ID domain_id	3fkyB02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Glutamine synthetase/guanido kinase, catalytic domain

Domain ID domain_id	3fkyC01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	70 — Glutamine synthetase, N-terminal domain

Domain ID domain_id	3fkyC02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Glutamine synthetase/guanido kinase, catalytic domain

Domain ID domain_id	3fkyD01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	70 — Glutamine synthetase, N-terminal domain

Domain ID domain_id	3fkyD02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Glutamine synthetase/guanido kinase, catalytic domain

Domain ID domain_id	3fkyE01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	70 — Glutamine synthetase, N-terminal domain

Domain ID domain_id	3fkyE02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Glutamine synthetase/guanido kinase, catalytic domain

Domain ID domain_id	3fkyF01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	70 — Glutamine synthetase, N-terminal domain

Domain ID domain_id	3fkyF02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Glutamine synthetase/guanido kinase, catalytic domain

Domain ID domain_id	3fkyG01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	70 — Glutamine synthetase, N-terminal domain

Domain ID domain_id	3fkyG02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Glutamine synthetase/guanido kinase, catalytic domain

Domain ID domain_id	3fkyH01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	70 — Glutamine synthetase, N-terminal domain

Domain ID domain_id	3fkyH02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Glutamine synthetase/guanido kinase, catalytic domain

Domain ID domain_id	3fkyI01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	70 — Glutamine synthetase, N-terminal domain

Domain ID domain_id	3fkyI02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Glutamine synthetase/guanido kinase, catalytic domain

Domain ID domain_id	3fkyJ01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	70 — Glutamine synthetase, N-terminal domain

Domain ID domain_id	3fkyJ02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Glutamine synthetase/guanido kinase, catalytic domain

Domain ID domain_id	3fkyK01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	70 — Glutamine synthetase, N-terminal domain

Domain ID domain_id	3fkyK02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Glutamine synthetase/guanido kinase, catalytic domain

Domain ID domain_id	3fkyL01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	70 — Glutamine synthetase, N-terminal domain

Domain ID domain_id	3fkyL02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Glutamine synthetase/guanido kinase, catalytic domain

Domain ID domain_id	3fkyM01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	70 — Glutamine synthetase, N-terminal domain

Domain ID domain_id	3fkyM02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Glutamine synthetase/guanido kinase, catalytic domain

Domain ID domain_id	3fkyN01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	70 — Glutamine synthetase, N-terminal domain

Domain ID domain_id	3fkyN02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Glutamine synthetase/guanido kinase, catalytic domain

Domain ID domain_id	3fkyO01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	70 — Glutamine synthetase, N-terminal domain

Domain ID domain_id	3fkyO02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Glutamine synthetase/guanido kinase, catalytic domain

Domain ID domain_id	3fkyP01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	70 — Glutamine synthetase, N-terminal domain

Domain ID domain_id	3fkyP02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Glutamine synthetase/guanido kinase, catalytic domain

Domain ID domain_id	3fkyQ01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	70 — Glutamine synthetase, N-terminal domain

Domain ID domain_id	3fkyQ02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Glutamine synthetase/guanido kinase, catalytic domain

Domain ID domain_id	3fkyR01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	70 — Glutamine synthetase, N-terminal domain

Domain ID domain_id	3fkyR02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Glutamine synthetase/guanido kinase, catalytic domain

Domain ID domain_id	3fkyS01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	70 — Glutamine synthetase, N-terminal domain

Domain ID domain_id	3fkyS02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Glutamine synthetase/guanido kinase, catalytic domain

Domain ID domain_id	3fkyT01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	70 — Glutamine synthetase, N-terminal domain

Domain ID domain_id	3fkyT02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	590 — Creatine Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Glutamine synthetase/guanido kinase, catalytic domain

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Unit-cell length a length_a	128.650 Å
Unit-cell length b length_b	129.940 Å
Unit-cell length c length_c	135.610 Å
Unit-cell angle α angle_alpha	93.46 °
Unit-cell angle β angle_beta	104.61 °
Unit-cell angle γ angle_gamma	104.01 °
Molecules per unit cell Z z_pdb	20

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

Resolution resolution	2.950 Å
Low-resolution limit resolution_low	65.218 Å
R factor r_factor	0.2260
R_work r_work	0.2250
R_free r_free	0.2580

Crystal structure of the glutamine synthetase Gln1deltaN18 from the yeast Saccharomyces cerevisiae

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

Glutamine synthetase

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

3fky__assembly_2__model_1

3fky__assembly_2__model_1 | I(q)

3fky__assembly_2__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 non-polymer

6. Fold Classification (SCOP + CATH) 40 domains

CATH v4.4 (40 domains)

7. Citations (1)

Crystal structure of the glutamine synthetase Gln1deltaN18 from the yeast Saccharomyces cerevisiae

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

Glutamine synthetase

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

3fky__assembly_2__model_1

3fky__assembly_2__model_1 | I(q)

3fky__assembly_2__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 non-polymer

6. Fold Classification (SCOP + CATH) 40 domains

CATH v4.4 (40 domains)

7. Citations (1)