5i9s

MicroED structure of proteinase K at 1.75 A resolution

Method: ELECTRON CRYSTALLOGRAPHY Dmax: 53.0 Å Quality: EXCELLENT

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

Proteinase K

OrganismNot specified

UniProt P06873

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 106–384 Not recorded SO4 SULFATE ION × 2 ELECTRON CRYSTALLOGRAPHY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 1.75 Å R-free 0.266

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.

256 other PDB entries and 256 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name PRTK_ENGAL
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–279; UniProt 106–384

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 5i9s

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 5i9s
Download Download

2. Structure Basics 2. Structure Basics

Entry ID entry_id5i9s
Deposition date deposition_date2016-02-20
Structure title titleMicroED structure of proteinase K at 1.75 A resolution
Keywords keywordsHYDROLASE; HYDROLASE
Experimental Method methodELECTRON CRYSTALLOGRAPHY

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

Radius of gyration Rg (Guinier) rg_guinier17.68
Radius of gyration Rg (electron density) rg_electron16.55
Forward intensity I(0) i016731000.00
Molecular weight molecular_weight29052.0 kDa
Excluded volume excluded_volume35474 ų
Envelope volume envelope_volume37856 ų
Hydration-shell volume shell_volume18444 ų
Envelope diameter envelope_diameter53.7
Shell Rg shell_rg23.37
Envelope Rg envelope_rg16.88
Shape Rg shape_rg16.57
Total Rg total_rg17.41
Total atoms total_atoms2037
Residues n_residues279
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 dmax53.0
Rg (real space) rg_real17.51
Rg uncertainty (real space) rg_real_error0.21
I(0) (real space) i0_real1.6730e+07
I(0) uncertainty (real space) i0_real_error1.8170e+05
Rg (reciprocal space) rg_reciprocal17.53
I(0) (reciprocal space) i0_reciprocal16730000.0000
Solution quality estimate total_estimate0.9012
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary23.3
Skewness Skewness skewness0.032
Kurtosis Kurtosis kurtosis-0.516
Angular range angular_range— – 0.4500 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha4771000.0000
Real-space data points n_real_points76
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.918; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.977; Smooth: 0.981

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd5i9sa_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.41 — Subtilisin-like
Superfamily Superfamily superfamilyc.41.1 — Subtilisin-like
Family Family familyc.41.1.1 — Subtilases

CATH v4.4 (1 domains)

Domain ID domain_id5i9sA00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily200 — Peptidase S8/S53 domain

8. Citations (1)

9. Files and Curves (10)