1kji

Crystal structure of glycinamide ribonucleotide transformylase in complex with Mg-AMPPCP

Method: X-RAY DIFFRACTION

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

phosphoribosylglycinamide formyltransferase 2

Escherichia coli

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 × 4 SODIUM ION × 3 CHLORIDE ION × 1 PHOSPHOMETHYLPHOSPHONIC ACID ADENYLATE ESTER × 2 3[N-MORPHOLINO]PROPANE SULFONIC ACID × 1 1,2-ETHANEDIOL × 1 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PURT_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–391； UniProt 1–391 Author chain B； PDBConstruct 1–391； UniProt 1–391

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	1kji
Deposition date deposition_date	2001-12-04
Structure title title	Crystal structure of glycinamide ribonucleotide transformylase in complex with Mg-AMPPCP
Keywords keywords	ATP-grasp, purine biosynthesis, nucleotide, TRANSFERASE; TRANSFERASE
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.

1kji__assembly_1__model_1

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

Download this curve (.dat)

1kji__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1kji__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	29.13 Å
Rg (electron density)	28.47 Å
Total Rg	29.04 Å
Atom count	6017
Residues	778
Excluded volume	107030 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1kji__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 (8)

Entity 1 Entity 1 polymer

Description description	phosphoribosylglycinamide formyltransferase 2
Molecular weight formula_weight	42349.3 kDa
EC 编号 ec_number	2.1.2.-
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	6963

TLLGTALRPAATRVMLLGSGELGKEVAIECQRLGVEVIAVDRYADAPAMHVAHRSHVINMLDGDALRRVVELEKPHYIVPEIEAIATDMLIQLEEEGLNVVPCARATKLTMNREGIRRLAAEELQLPTSTYRFADSESLFREAVADIGYPCIVKPVMSSSGKGQTFIRSAEQLAQAWKYAQQGGRAGAGRVIVEGVVKFDFEITLLTVSAVDGVHFCAPVGHRQEDGDYRESWQPQQMSPLALERAQEIARKVVLALGGYGLFGVELFVCGDEVIFSEVSPRPHDTGMVTLISQDLSEFALHVRAFLGLPVGGIRQYGPAASAVILPQLTSQNVTFDNVQNAVGADLQIRLFGKPEIDGSRRLGVALATAESVVDAIERAKHAAGQVKVQG

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	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 3 Entity 3 non-polymer

Description description	SODIUM ION
Molecular weight formula_weight	23.0 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 4 Entity 4 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 non-polymer

Description description	PHOSPHOMETHYLPHOSPHONIC ACID ADENYLATE ESTER
Molecular weight formula_weight	505.2 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 6 Entity 6 non-polymer

Description description	3[N-MORPHOLINO]PROPANE SULFONIC ACID
Molecular weight formula_weight	209.3 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 7 Entity 7 non-polymer

Description description	1,2-ETHANEDIOL
Molecular weight formula_weight	62.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 8 Entity 8 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	944

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6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

Domain ID domain_id	d1kjia1
Class class	b — All beta proteins
Fold Fold fold	b.84 — Barrel-sandwich hybrid
Superfamily Superfamily superfamily	b.84.2 — Rudiment single hybrid motif
Family Family family	b.84.2.1 — BC C-terminal domain-like

Domain ID domain_id	d1kjia2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.30 — PreATP-grasp domain
Superfamily Superfamily superfamily	c.30.1 — PreATP-grasp domain
Family Family family	c.30.1.1 — BC N-terminal domain-like

Domain ID domain_id	d1kjia3
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.142 — ATP-grasp
Superfamily Superfamily superfamily	d.142.1 — Glutathione synthetase ATP-binding domain-like
Family Family family	d.142.1.2 — BC ATP-binding domain-like

Domain ID domain_id	d1kjib1
Class class	b — All beta proteins
Fold Fold fold	b.84 — Barrel-sandwich hybrid
Superfamily Superfamily superfamily	b.84.2 — Rudiment single hybrid motif
Family Family family	b.84.2.1 — BC C-terminal domain-like

Domain ID domain_id	d1kjib2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.30 — PreATP-grasp domain
Superfamily Superfamily superfamily	c.30.1 — PreATP-grasp domain
Family Family family	c.30.1.1 — BC N-terminal domain-like

Domain ID domain_id	d1kjib3
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.142 — ATP-grasp
Superfamily Superfamily superfamily	d.142.1 — Glutathione synthetase ATP-binding domain-like
Family Family family	d.142.1.2 — BC ATP-binding domain-like

CATH v4.4 (6 domains)

Domain ID domain_id	1kjiA01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	1kjiA02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1490 — Dna Ligase; domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, A domain

Domain ID domain_id	1kjiA03
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	470 — D-amino Acid Aminotransferase; Chain A, domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, B domain

Domain ID domain_id	1kjiB01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	1kjiB02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1490 — Dna Ligase; domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, A domain

Domain ID domain_id	1kjiB03
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	470 — D-amino Acid Aminotransferase; Chain A, domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, B domain

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Unit-cell length a length_a	62.200 Å
Unit-cell length b length_b	179.200 Å
Unit-cell length c length_c	76.200 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	8

Space group space_group	P 21 21 2
Space-group number int_tables_number	18
Crystal system crystal_system	—

Resolution resolution	1.600 Å
Low-resolution limit resolution_low	30.000 Å
R factor r_factor	0.1840
R_work r_work	0.1830
R_free r_free	0.2290

Crystal structure of glycinamide ribonucleotide transformylase in complex with Mg-AMPPCP

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

phosphoribosylglycinamide formyltransferase 2

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

1kji__assembly_1__model_1

1kji__assembly_1__model_1 | I(q)

1kji__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 (8)

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 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 non-polymer

Entity 8 Entity 8 water

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. Citations (1)

Crystal structure of glycinamide ribonucleotide transformylase in complex with Mg-AMPPCP

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

phosphoribosylglycinamide formyltransferase 2

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

1kji__assembly_1__model_1

1kji__assembly_1__model_1 | I(q)

1kji__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 (8)

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 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 non-polymer

Entity 8 Entity 8 water

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. Citations (1)