4riu

A Carbonic Anhydrase IX Mimic in Complex with a Saccharin-Based Inhibitor

Method: X-RAY DIFFRACTION Dmax: 59.8 Å Quality: REASONABLE

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

Carbonic anhydrase 2

Homo sapiens

UniProt P00918

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 1–260 Mutation:A65S, N67Q, E69T, I91L, F131V, K170E, L204A ZN ZINC ION × 1 GOL GLYCEROL × 3 3QR [1-(1,1-dioxido-3-oxo-2,3-dihydro-1,2-benzothiazol-6-yl)-1H-1,2,3-triazol-4-yl]methyl alpha-L-idopyranoside × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7.8;298 K;1.6 M Sodium Citrate, 50mM Tris, pH 7.8, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K Resolution 1.65 Å R-free 0.176

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.

1239 other PDB entries and 1272 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CAH2_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–260; UniProt 1–260

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 4riu

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4riu
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4riu
Deposition date deposition_date2014-10-07
Structure title titleA Carbonic Anhydrase IX Mimic in Complex with a Saccharin-Based Inhibitor
Keywords keywordsCarbonic Anhydrase Fold, Reversible Hydration of CO2, Active Site Point Mutations, Cytosolic, Lyase-Lyase inhibitor complex; Lyase/Lyase inhibitor
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier18.55
Radius of gyration Rg (electron density) rg_electron17.32
Forward intensity I(0) i015491900.00
Molecular weight molecular_weight29723.0 kDa
Excluded volume excluded_volume37189 ų
Envelope volume envelope_volume41323 ų
Hydration-shell volume shell_volume19313 ų
Envelope diameter envelope_diameter61.2
Shell Rg shell_rg24.12
Envelope Rg envelope_rg17.73
Shape Rg shape_rg17.29
Total Rg total_rg18.40
Total atoms total_atoms2101
Residues n_residues258
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 dmax59.8
Rg (real space) rg_real18.67
Rg uncertainty (real space) rg_real_error0.11
I(0) (real space) i0_real1.5180e+07
I(0) uncertainty (real space) i0_real_error1.5260e+05
Rg (reciprocal space) rg_reciprocal18.43
I(0) (reciprocal space) i0_reciprocal15490000.0000
Solution quality estimate total_estimate0.6924
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary23.8
Skewness Skewness skewness0.194
Kurtosis Kurtosis kurtosis-0.206
Angular range angular_range— – 0.4300 −1
Current regularization parameter α current_alpha7.7960
Highest regularization parameter α highest_alpha3139000.0000
Real-space data points n_real_points74
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.853; Stabil: 0.934; Sysdev: 0.000; Positv: 1.000; Valcen: 0.989; Smooth: 0.686

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_idd4riua_
Class classb — All beta proteins
Fold Fold foldb.74 — Carbonic anhydrase
Superfamily Superfamily superfamilyb.74.1 — Carbonic anhydrase
Family Family familyb.74.1.1 — Carbonic anhydrase

CATH v4.4 (1 domains)

Domain ID domain_id4riuA00
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology200 — Carbonic Anhydrase II
Homologous superfamily homologous superfamily10 — Alpha carbonic anhydrase

8. Citations (1)

9. Files and Curves (10)