SAXSdb — 4an2

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

DUAL SPECIFICITY MITOGEN-ACTIVATED PROTEIN KINASE KINASE 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	[3,4-BIS(FLUORANYL)-2-[(2-FLUORANYL-4-IODANYL-PHENYL)AMINO]PHENYL]-[3-OXIDANYL-3-[(2S)-PIPERIDIN-2-YL]AZETIDIN-1-YL]METHANONE × 1 PHOSPHOMETHYLPHOSPHONIC ACID ADENYLATE ESTER × 1 MAGNESIUM ION × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	MP2K1_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 4–205； UniProt 61–262 Author chain A； PDBConstruct 206–293； UniProt 305–392

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	4an2
Deposition date deposition_date	2012-03-14
Structure title title	Crystal structures of human MEK1 with carboxamide-based allosteric inhibitor XL518 (GDC-0973), or related analogs.
Keywords keywords	TRANSFERASE, MAP2K1, ATP-BINDING, ALLOSTERIC INHIBITION; 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.

4an2__assembly_1__model_1

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

Download this curve (.dat)

4an2__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4an2__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	19.87 Å
Rg (electron density)	18.92 Å
Total Rg	19.71 Å
Atom count	2271
Residues	282
Excluded volume	40704 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4an2__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 (5)

Entity 1 Entity 1 polymer

Description description	DUAL SPECIFICITY MITOGEN-ACTIVATED PROTEIN KINASE KINASE 1
Molecular weight formula_weight	33614.7 kDa
EC 编号 ec_number	2.7.12.2
Mutation mutation	YES
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	2314

MALGELKDDDFEKISELGAGNGGVVFKVSHKPSGLVMARKLIHLEIKPAIRNQIIRELQVLHECNSPYIVGFYGAFYSDGEISICMEHMDGGSLDQVLKKAGRIPEQILGKVSIAVIKGLTYLREKHKIMHRDVKPSNILVNSRGEIKLCDFGVSGQLIDEMANEFVGTRSYMSPERLQGTHYSVQSDIWSMGLSLVEMAVGRYPRPPMAIFELLDYIVNEPPPKLPSAVFSLEFQDFVNKCLIKNPAERADLKQLMVHAFIKRSDAEEVDFAGWLCSTIGLNQPSTPTHAAGEGHHHHHH

Source Source

Source organism organism	HOMO SAPIENS
Common name common_name	HUMAN
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	SPODOPTERA FRUGIPERDA

Entity 2 Entity 2 non-polymer

Description description	[3,4-BIS(FLUORANYL)-2-[(2-FLUORANYL-4-IODANYL-PHENYL)AMINO]PHENYL]-[3-OXIDANYL-3-[(2S)-PIPERIDIN-2-YL]AZETIDIN-1-YL]METHANONE
Molecular weight formula_weight	531.3 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	PHOSPHOMETHYLPHOSPHONIC ACID ADENYLATE ESTER
Molecular weight formula_weight	505.2 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	38

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6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	4an2A01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	200 — Phosphorylase Kinase; domain 1
Homologous superfamily homologous superfamily	20 — Phosphorylase Kinase; domain 1

Domain ID domain_id	4an2A02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	510 — Transferase(Phosphotransferase); domain 1
Homologous superfamily homologous superfamily	10 — Transferase(Phosphotransferase) domain 1

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Unit-cell length a length_a	108.844 Å
Unit-cell length b length_b	108.844 Å
Unit-cell length c length_c	47.710 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	6

Space group space_group	P 61
Space-group number int_tables_number	169
Crystal system crystal_system	—

Resolution resolution	2.500 Å
Low-resolution limit resolution_low	94.070 Å
R factor r_factor	0.2149
R_work r_work	0.2108
R_free r_free	0.2990

Crystal structures of human MEK1 with carboxamide-based allosteric inhibitor XL518 (GDC-0973), or related analogs.

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

DUAL SPECIFICITY MITOGEN-ACTIVATED PROTEIN KINASE KINASE 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

4an2__assembly_1__model_1

4an2__assembly_1__model_1 | I(q)

4an2__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 (5)

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 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)

Crystal structures of human MEK1 with carboxamide-based allosteric inhibitor XL518 (GDC-0973), or related analogs.

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

DUAL SPECIFICITY MITOGEN-ACTIVATED PROTEIN KINASE KINASE 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

4an2__assembly_1__model_1

4an2__assembly_1__model_1 | I(q)

4an2__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 (5)

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 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)