3kwb

Structure of CatK covalently bound to a dioxo-triazine inhibitor

Method: X-RAY DIFFRACTION Dmax: 86.3 Å Quality: GOOD

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

Cathepsin K

Homo sapiens

UniProt P43235

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 X; UniProt 115–329 Fragment:full length Mutation:wild type ORH 3,5-dioxo-4-(3-piperidin-1-ylpropyl)-2-[3-(trifluoromethyl)phenyl]-2,3,4,5-tetrahydro-1,2,4-triazine-6-carbonitrile × 1 X-RAY DIFFRACTION X-ray crystallization conditions:pH 3.4;298 K;30%(W/V) PEG 4000 and 150 mM Ammonium Sulfate pH 3.4 3 microliter of protein at 10 mg/ml and 2 microliter of reservoir solution. , VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.02 Å R-free 0.263
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain Y; UniProt 115–329 Fragment:full length Mutation:wild type ORH 3,5-dioxo-4-(3-piperidin-1-ylpropyl)-2-[3-(trifluoromethyl)phenyl]-2,3,4,5-tetrahydro-1,2,4-triazine-6-carbonitrile × 1 X-RAY DIFFRACTION X-ray crystallization conditions:pH 3.4;298 K;30%(W/V) PEG 4000 and 150 mM Ammonium Sulfate pH 3.4 3 microliter of protein at 10 mg/ml and 2 microliter of reservoir solution. , VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.02 Å R-free 0.263

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.

69 other PDB entries and 82 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CATK_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain X; PDBConstruct 1–215; UniProt 115–329 Author chain Y; PDBConstruct 1–215; UniProt 115–329

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 3kwb

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id3kwb
Deposition date deposition_date2009-12-01
Structure title titleStructure of CatK covalently bound to a dioxo-triazine inhibitor
Keywords keywords;covalent bond, Cys 25, thioimidate, Disease mutation, Disulfide bond, Glycoprotein, Hydrolase, Lysosome, Protease, Thiol protease, Zymogen ;; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier26.22
Radius of gyration Rg (electron density) rg_electron25.86
Forward intensity I(0) i040137500.00
Molecular weight molecular_weight47233.0 kDa
Excluded volume excluded_volume58294 ų
Envelope volume envelope_volume69713 ų
Hydration-shell volume shell_volume23475 ų
Envelope diameter envelope_diameter88.2
Shell Rg shell_rg31.86
Envelope Rg envelope_rg25.94
Shape Rg shape_rg25.80
Total Rg total_rg26.69
Total atoms total_atoms3315
Residues n_residues425
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 dmax86.3
Rg (real space) rg_real26.38
Rg uncertainty (real space) rg_real_error0.57
I(0) (real space) i0_real4.0140e+07
I(0) uncertainty (real space) i0_real_error5.3910e+05
Rg (reciprocal space) rg_reciprocal26.33
I(0) (reciprocal space) i0_reciprocal40140000.0000
Solution quality estimate total_estimate0.8626
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary24.1
Skewness Skewness skewness0.445
Kurtosis Kurtosis kurtosis-0.517
Angular range angular_range— – 0.3050 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha11070000.0000
Real-space data points n_real_points62
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.808; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.839; Smooth: 0.946

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd3kwbx_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.3 — Cysteine proteinases
Superfamily Superfamily superfamilyd.3.1 — Cysteine proteinases
Family Family familyd.3.1.1 — Papain-like
Domain ID domain_idd3kwby_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.3 — Cysteine proteinases
Superfamily Superfamily superfamilyd.3.1 — Cysteine proteinases
Family Family familyd.3.1.1 — Papain-like

CATH v4.4 (2 domains)

Domain ID domain_id3kwbX00
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology70 — Cathepsin B; Chain A
Homologous superfamily homologous superfamily10 — Cysteine proteinases
Domain ID domain_id3kwbY00
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology70 — Cathepsin B; Chain A
Homologous superfamily homologous superfamily10 — Cysteine proteinases

8. Citations (1)

9. Files and Curves (10)