6bkx

Novel Modes of Inhibition of Wild-Type IDH1: Direct Covalent Modification of His315 with Cmpd1

Method: X-RAY DIFFRACTION Dmax: 133.0 Å Quality: GOOD

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

Isocitrate dehydrogenase [NADP] cytoplasmic

Homo sapiens

UniProt O75874

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 homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain C; UniProt 1–414 Not recorded CA CALCIUM ION × 2 ICT ISOCITRIC ACID × 2 DWP (6aS,7S,9R,10aS)-7,10a-dimethyl-8-oxo-2-(phenylamino)-5,6,6a,7,8,9,10,10a-octahydrobenzo[h]quinazoline-9-carbonitrile × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;pH 7.4;290 K;20% PEG 3350, 0.2M Potassium/Sodium tartrate Resolution 1.65 Å R-free 0.187
2 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 1–414 Chain B; UniProt 1–414 Not recorded CA CALCIUM ION × 2 ICT ISOCITRIC ACID × 2 DWP (6aS,7S,9R,10aS)-7,10a-dimethyl-8-oxo-2-(phenylamino)-5,6,6a,7,8,9,10,10a-octahydrobenzo[h]quinazoline-9-carbonitrile × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;pH 7.4;290 K;20% PEG 3350, 0.2M Potassium/Sodium tartrate Resolution 1.65 Å R-free 0.187

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.

59 other PDB entries and 91 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name IDHC_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–414; UniProt 1–414 Author chain B; PDBConstruct 1–414; UniProt 1–414 Author chain C; PDBConstruct 1–414; UniProt 1–414

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 6bkx

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 6bkx
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2. Structure Basics 2. Structure Basics

Entry ID entry_id6bkx
Deposition date deposition_date2017-11-09
Structure title titleNovel Modes of Inhibition of Wild-Type IDH1: Direct Covalent Modification of His315 with Cmpd1
Keywords keywordsdehydrogenase, inhibitor, OXIDOREDUCTASE, OXIDOREDUCTASE-OXIDOREDUCTASE inhibitor complex; OXIDOREDUCTASE/OXIDOREDUCTASE inhibitor
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier37.75
Radius of gyration Rg (electron density) rg_electron37.87
Forward intensity I(0) i0301492000.00
Molecular weight molecular_weight142010.0 kDa
Excluded volume excluded_volume178140 ų
Envelope volume envelope_volume230780 ų
Hydration-shell volume shell_volume52149 ų
Envelope diameter envelope_diameter145.2
Shell Rg shell_rg42.38
Envelope Rg envelope_rg38.26
Shape Rg shape_rg37.87
Total Rg total_rg38.13
Total atoms total_atoms9990
Residues n_residues1247
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 dmax133.0
Rg (real space) rg_real37.98
Rg uncertainty (real space) rg_real_error1.32
I(0) (real space) i0_real3.0150e+08
I(0) uncertainty (real space) i0_real_error4.9800e+06
Rg (reciprocal space) rg_reciprocal37.84
I(0) (reciprocal space) i0_reciprocal301400000.0000
Solution quality estimate total_estimate0.8488
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary38.0
Skewness Skewness skewness0.517
Kurtosis Kurtosis kurtosis-0.200
Angular range angular_range— – 0.2100 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha76440000.0000
Real-space data points n_real_points43
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.719; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.957; Smooth: 0.916

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 9 domains

SCOP 2.08 (6 domains)

Domain ID domain_idd6bkxa1
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.77 — Isocitrate/Isopropylmalate dehydrogenase-like
Superfamily Superfamily superfamilyc.77.1 — Isocitrate/Isopropylmalate dehydrogenase-like
Family Family familyc.77.1.1 — Dimeric isocitrate & isopropylmalate dehydrogenases
Domain ID domain_idd6bkxa2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd6bkxb1
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.77 — Isocitrate/Isopropylmalate dehydrogenase-like
Superfamily Superfamily superfamilyc.77.1 — Isocitrate/Isopropylmalate dehydrogenase-like
Family Family familyc.77.1.1 — Dimeric isocitrate & isopropylmalate dehydrogenases
Domain ID domain_idd6bkxb2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd6bkxc1
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.77 — Isocitrate/Isopropylmalate dehydrogenase-like
Superfamily Superfamily superfamilyc.77.1 — Isocitrate/Isopropylmalate dehydrogenase-like
Family Family familyc.77.1.1 — Dimeric isocitrate & isopropylmalate dehydrogenases
Domain ID domain_idd6bkxc2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags

CATH v4.4 (3 domains)

Domain ID domain_id6bkxA00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology718 — Isopropylmalate Dehydrogenase
Homologous superfamily homologous superfamily10 — Isopropylmalate Dehydrogenase
Domain ID domain_id6bkxB00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology718 — Isopropylmalate Dehydrogenase
Homologous superfamily homologous superfamily10 — Isopropylmalate Dehydrogenase
Domain ID domain_id6bkxC00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology718 — Isopropylmalate Dehydrogenase
Homologous superfamily homologous superfamily10 — Isopropylmalate Dehydrogenase

8. Citations (1)

9. Files and Curves (10)