3c9e

Crystal structure of the cathepsin K : chondroitin sulfate complex.

Method: X-RAY DIFFRACTION Dmax: 57.4 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 Other combination Homooligomer Protein × 2 其他Polymer 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 115–329 Not recorded ;2-acetamido-2-deoxy-4-O-sulfo-beta-D-galactopyranose-(1-4)-beta-D-glucopyranuronic acid-(1-3)-2-acetamido-2-deoxy-4-O-sulfo-beta-D-galactopyranose-(1-4)-beta-D-glucopyranuronic acid-(1-3)-2-acetamido-2-deoxy-4-O-sulfo-beta-D-galactopyranose-(1-4)-beta-D-glucopyranuronic acid ; × 2 CA CALCIUM ION × 2 E64 N-[N-[1-HYDROXYCARBOXYETHYL-CARBONYL]LEUCYLAMINO-BUTYL]-GUANIDINE × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 4.5;295 K;Cathepsin K:chondroitin sulfate complex was made at 1:1 ratio. Precipitant contained 30% MPD, 0.1M sodium acetate buffer, 20mM calcium chloride, pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K, VAPOR DIFFUSION, HANGING DROP Resolution 1.80 Å R-free 0.209

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 83 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 A; 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 3c9e

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3c9e
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2. Structure Basics 2. Structure Basics

Entry ID entry_id3c9e
Deposition date deposition_date2008-02-15
Structure title titleCrystal structure of the cathepsin K : chondroitin sulfate complex.
Keywords keywords;n:1 cathepsin K : chondroitin sulfate complex, "beads-on-a-string" organization, Hydrolase, Lysosome, Protease, Thiol protease ;; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier17.82
Radius of gyration Rg (electron density) rg_electron16.56
Forward intensity I(0) i012680600.00
Molecular weight molecular_weight25287.0 kDa
Excluded volume excluded_volume31052 ų
Envelope volume envelope_volume34623 ų
Hydration-shell volume shell_volume17225 ų
Envelope diameter envelope_diameter57.0
Shell Rg shell_rg23.02
Envelope Rg envelope_rg16.88
Shape Rg shape_rg16.51
Total Rg total_rg17.65
Total atoms total_atoms1765
Residues n_residues215
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 dmax57.4
Rg (real space) rg_real17.70
Rg uncertainty (real space) rg_real_error0.26
I(0) (real space) i0_real1.2680e+07
I(0) uncertainty (real space) i0_real_error1.5400e+05
Rg (reciprocal space) rg_reciprocal17.71
I(0) (reciprocal space) i0_reciprocal12680000.0000
Solution quality estimate total_estimate0.8908
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary22.5
Skewness Skewness skewness0.153
Kurtosis Kurtosis kurtosis-0.431
Angular range angular_range— – 0.4450 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha3340000.0000
Real-space data points n_real_points75
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.862; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.993; Smooth: 0.999

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd3c9ea_
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 (1 domains)

Domain ID domain_id3c9eA00
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)