5yfn

Human isocitrate dehydrogenase 1 bound with isocitrate

Method: X-RAY DIFFRACTION Dmax: 84.8 Å Quality: REASONABLE

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 A; UniProt 1–414 Chain B; UniProt 1–414 Not recorded MG MAGNESIUM ION × 2 ICT ISOCITRIC ACID × 2 K POTASSIUM ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;298 K;0.1M HEPES sodium pH7.5, 0.8 M sodium phosphate, 0.8 M potassium phosphate Resolution 2.50 Å R-free 0.226

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 92 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 8–421; UniProt 1–414 Author chain B; PDBConstruct 8–421; 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 5yfn

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 5yfn
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2. Structure Basics 2. Structure Basics

Entry ID entry_id5yfn
Deposition date deposition_date2017-09-21
Structure title titleHuman isocitrate dehydrogenase 1 bound with isocitrate
Keywords keywordsIDH1, isocitrate, NADPH regeneration, CYTOSOLIC PROTEIN, OXIDOREDUCTASE; OXIDOREDUCTASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier29.21
Radius of gyration Rg (electron density) rg_electron28.56
Forward intensity I(0) i0135386000.00
Molecular weight molecular_weight92731.0 kDa
Excluded volume excluded_volume116200 ų
Envelope volume envelope_volume142330 ų
Hydration-shell volume shell_volume40602 ų
Envelope diameter envelope_diameter132.9
Shell Rg shell_rg36.45
Envelope Rg envelope_rg29.49
Shape Rg shape_rg28.59
Total Rg total_rg29.19
Total atoms total_atoms6529
Residues n_residues824
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 dmax84.8
Rg (real space) rg_real28.57
Rg uncertainty (real space) rg_real_error0.15
I(0) (real space) i0_real1.2960e+08
I(0) uncertainty (real space) i0_real_error1.5140e+06
Rg (reciprocal space) rg_reciprocal29.20
I(0) (reciprocal space) i0_reciprocal135400000.0000
Solution quality estimate total_estimate0.6854
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary34.5
Skewness Skewness skewness0.283
Kurtosis Kurtosis kurtosis-0.349
Angular range angular_range— – 0.2700 −1
Current regularization parameter α current_alpha5.4600
Highest regularization parameter α highest_alpha22390000.0000
Real-space data points n_real_points55
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.957; Stabil: 0.929; Sysdev: 0.000; Positv: 1.000; Valcen: 0.991; Smooth: 0.274

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd5yfna1
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_idd5yfna2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd5yfnb1
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_idd5yfnb2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags

CATH v4.4 (2 domains)

Domain ID domain_id5yfnA00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology718 — Isopropylmalate Dehydrogenase
Homologous superfamily homologous superfamily10 — Isopropylmalate Dehydrogenase
Domain ID domain_id5yfnB00
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)