SAXSdb — 4ikt

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

Methionine aminopeptidase 1

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	N-[5-chloro-6-methyl-2-(pyridin-2-yl)pyrimidin-4-yl]-N'-[5-(trifluoromethyl)pyridin-2-yl]ethane-1,2-diamine × 1 COBALT (II) ION × 3 POTASSIUM ION × 1 GLYCEROL × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	AMPM1_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 26–329； UniProt 81–384

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	4ikt
Deposition date deposition_date	2012-12-28
Structure title title	Crystal structure of truncated (delta 1-89) human methionine aminopeptidase Type 1 in complex with N1-(5-chloro-6-methyl-2-(pyridin-2-yl)pyrimidin-4-yl)-N2-(5-(trifluoromethyl)pyridin-2-yl)ethane-1,2-diamine
Keywords keywords	pita-bread fold, aminopeptidase, ribosome, HYDROLASE; HYDROLASE
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.

4ikt__assembly_1__model_1

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

Download this curve (.dat)

4ikt__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4ikt__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	18.98 Å
Rg (electron density)	18.01 Å
Total Rg	18.88 Å
Atom count	2434
Residues	304
Excluded volume	43087 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4ikt__assembly_1__model_1`	monomeric （1）	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 (6)

Entity 1 Entity 1 polymer

Description description	Methionine aminopeptidase 1
Molecular weight formula_weight	36935.9 kDa
EC 编号 ec_number	3.4.11.18
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	2577

MGSSHHHHHHSSGLVPRGSHMLEDPYRYTGKLRPHYPLMPTRPVPSYIQRPDYADHPLGMSESEQALKGTSQIKLLSSEDIEGMRLVCRLAREVLDVAAGMIKPGVTTEEIDHAVHLACIARNCYPSPLNYYNFPKSCCTSVNEVICHGIPDRRPLQEGDIVNVDITLYRNGYHGDLNETFFVGEVDDGARKLVQTTYECLMQAIDAVKPGVRYRELGNIIQKHAQANGFSVVRSYCGHGIHKLFHTAPNVPHYAKNKAVGVMKSGHVFTIEPMICEGGWQDETWPDGWTAVTRDGKRSAQFEHTLLVTDTGCEILTRRLDSARPHFMS

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	N-[5-chloro-6-methyl-2-(pyridin-2-yl)pyrimidin-4-yl]-N'-[5-(trifluoromethyl)pyridin-2-yl]ethane-1,2-diamine
Molecular weight formula_weight	408.8 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	COBALT (II) ION
Molecular weight formula_weight	58.9 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 4 Entity 4 non-polymer

Description description	POTASSIUM ION
Molecular weight formula_weight	39.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 non-polymer

Description description	GLYCEROL
Molecular weight formula_weight	92.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 6 Entity 6 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	135

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6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

Domain ID domain_id	4iktA00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	230 — Creatine Amidinohydrolase
Homologous superfamily homologous superfamily	10 — Creatinase/methionine aminopeptidase superfamily

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Unit-cell length a length_a	47.185 Å
Unit-cell length b length_b	77.372 Å
Unit-cell length c length_c	47.690 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	91.73 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	2

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	1.600 Å
Low-resolution limit resolution_low	31.160 Å
R factor r_factor	0.1959
R_work r_work	0.1931
R_free r_free	0.2204

Crystal structure of truncated (delta 1-89) human methionine aminopeptidase Type 1 in complex with N1-(5-chloro-6-methyl-2-(pyridin-2-yl)pyrimidin-4-yl)-N2-(5-(trifluoromethyl)pyridin-2-yl)ethane-1,2-diamine

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

Methionine aminopeptidase 1

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

4ikt__assembly_1__model_1

4ikt__assembly_1__model_1 | I(q)

4ikt__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 (6)

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 water

6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

7. Citations (1)

Crystal structure of truncated (delta 1-89) human methionine aminopeptidase Type 1 in complex with N1-(5-chloro-6-methyl-2-(pyridin-2-yl)pyrimidin-4-yl)-N2-(5-(trifluoromethyl)pyridin-2-yl)ethane-1,2-diamine

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

Methionine aminopeptidase 1

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

4ikt__assembly_1__model_1

4ikt__assembly_1__model_1 | I(q)

4ikt__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 (6)

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 water

6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

7. Citations (1)