7qkd

Crystal structure of human Cathepsin L in complex with covalently bound MG132

Method: X-RAY DIFFRACTION Dmax: 90.8 Å Quality: EXCELLENT

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

Cathepsin L

Homo sapiens

UniProt P07711

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 114–333 Mutation:T110A ALD N-[(benzyloxy)carbonyl]-L-leucyl-N-[(2S)-1-hydroxy-4-methylpentan-2-yl]-L-leucinamide × 1 PEG DI(HYDROXYETHYL)ETHER × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 4;293 K;Mature cathepsin L at a concentration of 7 mg/ml was equilibrated against 27% w/v PEG 8000, 1 mM TCEP and 0.1 M sodium acetate at pH 4.0. Crystals, which grew at 293 K to final size after approximately 3 days, were transferred to a compound soaking solution containing 22% w/v PEG 8000, 1 mM TCEP and 0.1 M sodium acetate at pH 4.0 as well as 5% v/v DMSO and 10% v/v PEG 400. Resolution 1.50 Å R-free 0.198
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 114–333 Mutation:T110A ALD N-[(benzyloxy)carbonyl]-L-leucyl-N-[(2S)-1-hydroxy-4-methylpentan-2-yl]-L-leucinamide × 1 PEG DI(HYDROXYETHYL)ETHER × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 4;293 K;Mature cathepsin L at a concentration of 7 mg/ml was equilibrated against 27% w/v PEG 8000, 1 mM TCEP and 0.1 M sodium acetate at pH 4.0. Crystals, which grew at 293 K to final size after approximately 3 days, were transferred to a compound soaking solution containing 22% w/v PEG 8000, 1 mM TCEP and 0.1 M sodium acetate at pH 4.0 as well as 5% v/v DMSO and 10% v/v PEG 400. Resolution 1.50 Å R-free 0.198
3 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain C; UniProt 114–333 Mutation:T110A ALD N-[(benzyloxy)carbonyl]-L-leucyl-N-[(2S)-1-hydroxy-4-methylpentan-2-yl]-L-leucinamide × 1 PEG DI(HYDROXYETHYL)ETHER × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 4;293 K;Mature cathepsin L at a concentration of 7 mg/ml was equilibrated against 27% w/v PEG 8000, 1 mM TCEP and 0.1 M sodium acetate at pH 4.0. Crystals, which grew at 293 K to final size after approximately 3 days, were transferred to a compound soaking solution containing 22% w/v PEG 8000, 1 mM TCEP and 0.1 M sodium acetate at pH 4.0 as well as 5% v/v DMSO and 10% v/v PEG 400. Resolution 1.50 Å R-free 0.198
4 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain D; UniProt 114–333 Mutation:T110A ALD N-[(benzyloxy)carbonyl]-L-leucyl-N-[(2S)-1-hydroxy-4-methylpentan-2-yl]-L-leucinamide × 1 PEG DI(HYDROXYETHYL)ETHER × 3 ACT ACETATE ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 4;293 K;Mature cathepsin L at a concentration of 7 mg/ml was equilibrated against 27% w/v PEG 8000, 1 mM TCEP and 0.1 M sodium acetate at pH 4.0. Crystals, which grew at 293 K to final size after approximately 3 days, were transferred to a compound soaking solution containing 22% w/v PEG 8000, 1 mM TCEP and 0.1 M sodium acetate at pH 4.0 as well as 5% v/v DMSO and 10% v/v PEG 400. Resolution 1.50 Å R-free 0.198

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.

63 other PDB entries and 153 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CATL1_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–220; UniProt 114–333 Author chain B; PDBConstruct 1–220; UniProt 114–333 Author chain C; PDBConstruct 1–220; UniProt 114–333 Author chain D; PDBConstruct 1–220; UniProt 114–333

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 7qkd

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 7qkd
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2. Structure Basics 2. Structure Basics

Entry ID entry_id7qkd
Deposition date deposition_date2021-12-17
Structure title titleCrystal structure of human Cathepsin L in complex with covalently bound MG132
Keywords keywords;cathepsin, cystein protease, drug development, drug target, peptide-like inhibitor, lysosome, protein degradation, SARS-CoV-2, COVID-19, spike protein maturation, HYDROLASE ;; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier29.97
Radius of gyration Rg (electron density) rg_electron28.99
Forward intensity I(0) i0165512000.00
Molecular weight molecular_weight98793.0 kDa
Excluded volume excluded_volume121920 ų
Envelope volume envelope_volume145890 ų
Hydration-shell volume shell_volume41171 ų
Envelope diameter envelope_diameter93.0
Shell Rg shell_rg36.87
Envelope Rg envelope_rg28.80
Shape Rg shape_rg28.97
Total Rg total_rg29.71
Total atoms total_atoms13430
Residues n_residues876
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 dmax90.8
Rg (real space) rg_real29.78
Rg uncertainty (real space) rg_real_error0.55
I(0) (real space) i0_real1.6550e+08
I(0) uncertainty (real space) i0_real_error2.3040e+06
Rg (reciprocal space) rg_reciprocal29.87
I(0) (reciprocal space) i0_reciprocal165500000.0000
Solution quality estimate total_estimate0.9057
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary41.1
Skewness Skewness skewness0.074
Kurtosis Kurtosis kurtosis-0.583
Angular range angular_range— – 0.2650 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha48740000.0000
Real-space data points n_real_points54
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.953; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.989; Smooth: 0.923

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

Domain ID domain_id7qkdA01
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology70 — Cathepsin B; Chain A
Homologous superfamily homologous superfamily10 — Cysteine proteinases
Domain ID domain_id7qkdB01
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology70 — Cathepsin B; Chain A
Homologous superfamily homologous superfamily10 — Cysteine proteinases
Domain ID domain_id7qkdC01
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology70 — Cathepsin B; Chain A
Homologous superfamily homologous superfamily10 — Cysteine proteinases
Domain ID domain_id7qkdD01
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)