3eqc

X-ray structure of the human mitogen-activated protein kinase kinase 1 (MEK1) in a ternary complex with compound 1, ATP-GS AND MG2P

Method: X-RAY DIFFRACTION Dmax: 65.2 Å Quality: GOOD

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

Dual specificity mitogen-activated protein kinase kinase 1

Homo sapiens

UniProt Q02750

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 35–393 Fragment:Protein kinase domain, UNP residues 35-393 Mutation:S265N, S266K, Y267F 3BM 2-[(2-chloro-4-iodophenyl)amino]-N-{[(2R)-2,3-dihydroxypropyl]oxy}-3,4-difluorobenzamide × 1 AGS PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 1 MG MAGNESIUM ION × 1 CA CALCIUM ION × 1 NA SODIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 8;281 K;0.1M TRIS-CL, pH 8.0; 18% PEG 4000; 0.2M CALCIUM CHLORIDE; 3% DMSO, VAPOR DIFFUSION HANGING DROP, temperature 281K Resolution 1.80 Å R-free 0.235
2 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 35–393 Fragment:Protein kinase domain, UNP residues 35-393 Mutation:S265N, S266K, Y267F 3BM 2-[(2-chloro-4-iodophenyl)amino]-N-{[(2R)-2,3-dihydroxypropyl]oxy}-3,4-difluorobenzamide × 2 AGS PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 2 MG MAGNESIUM ION × 2 CA CALCIUM ION × 2 NA SODIUM ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 8;281 K;0.1M TRIS-CL, pH 8.0; 18% PEG 4000; 0.2M CALCIUM CHLORIDE; 3% DMSO, VAPOR DIFFUSION HANGING DROP, temperature 281K Resolution 1.80 Å R-free 0.235

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

92 other PDB entries and 121 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name MP2K1_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 2–360; UniProt 35–393

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.

SAXS scattering curve SAXS Profile

SAXS profile for 3eqc

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3eqc
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2. Structure Basics 2. Structure Basics

Entry ID entry_id3eqc
Deposition date deposition_date2008-09-30
Structure title titleX-ray structure of the human mitogen-activated protein kinase kinase 1 (MEK1) in a ternary complex with compound 1, ATP-GS AND MG2P
Keywords keywords;MEK1 KINASE, ATP-binding, Disease mutation, Kinase, Nucleotide-binding, Phosphoprotein, Serine/threonine-protein kinase, Transferase, Tyrosine-protein kinase ;; TRANSFERASE
Experimental Method methodX-RAY DIFFRACTION

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier20.57
Radius of gyration Rg (electron density) rg_electron19.59
Forward intensity I(0) i022318700.00
Molecular weight molecular_weight35833.0 kDa
Excluded volume excluded_volume44826 ų
Envelope volume envelope_volume52293 ų
Hydration-shell volume shell_volume21919 ų
Envelope diameter envelope_diameter67.5
Shell Rg shell_rg26.47
Envelope Rg envelope_rg19.95
Shape Rg shape_rg19.63
Total Rg total_rg20.41
Total atoms total_atoms2498
Residues n_residues312
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax65.2
Rg (real space) rg_real20.48
Rg uncertainty (real space) rg_real_error0.28
I(0) (real space) i0_real2.2320e+07
I(0) uncertainty (real space) i0_real_error2.6720e+05
Rg (reciprocal space) rg_reciprocal20.50
I(0) (reciprocal space) i0_reciprocal22320000.0000
Solution quality estimate total_estimate0.8954
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary25.5
Skewness Skewness skewness0.240
Kurtosis Kurtosis kurtosis-0.356
Angular range angular_range— – 0.3850 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha5592000.0000
Real-space data points n_real_points70
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.881; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.995; Smooth: 0.997

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (7)

7. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd3eqca_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.144 — Protein kinase-like (PK-like)
Superfamily Superfamily superfamilyd.144.1 — Protein kinase-like (PK-like)
Family Family familyd.144.1.7 — Protein kinases, catalytic subunit

CATH v4.4 (2 domains)

Domain ID domain_id3eqcA01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology200 — Phosphorylase Kinase; domain 1
Homologous superfamily homologous superfamily20 — Phosphorylase Kinase; domain 1
Domain ID domain_id3eqcA02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology510 — Transferase(Phosphotransferase); domain 1
Homologous superfamily homologous superfamily10 — Transferase(Phosphotransferase) domain 1

8. Citations (1)

9. Files and Curves (10)