4cq0

Cyclic secondary sulfonamides: unusually good inhibitors of cancer- related carbonic anhydrase enzymes

Method: X-RAY DIFFRACTION Dmax: 59.1 Å Quality: GOOD

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 Not recorded ZN ZINC ION × 1 FMT FORMIC ACID × 1 SXS 6-amino-1,2-benzothiazol-3(2H)-one 1,1-dioxide × 1 X-RAY DIFFRACTION X-ray crystallization conditions:pH 8.5;293 K;THE PROTEIN WAS AT 14 MG/ML. THE RESERVOIR WAS 2.9 M AMMONIUM SULFATE, 100 MM TRIS PH 8.5. THE DROPS WERE 210 NL PROTEIN PLUS 110 NL RESERVOIR PLUS 40 NL COMPOUND. THE CRYSTALS GREW AT 20C. Resolution 1.45 Å R-free 0.191

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 4cq0

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4cq0
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4cq0
Deposition date deposition_date2014-02-10
Structure title titleCyclic secondary sulfonamides: unusually good inhibitors of cancer- related carbonic anhydrase enzymes
Keywords keywordsLYASE, SACCHARIN, CLICK CHEMISTRY, DRUG DESIGN; LYASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier18.49
Radius of gyration Rg (electron density) rg_electron17.24
Forward intensity I(0) i014550400.00
Molecular weight molecular_weight29062.0 kDa
Excluded volume excluded_volume36477 ų
Envelope volume envelope_volume40249 ų
Hydration-shell volume shell_volume18950 ų
Envelope diameter envelope_diameter60.2
Shell Rg shell_rg23.97
Envelope Rg envelope_rg17.62
Shape Rg shape_rg17.22
Total Rg total_rg18.33
Total atoms total_atoms2056
Residues n_residues256
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 dmax59.1
Rg (real space) rg_real18.35
Rg uncertainty (real space) rg_real_error0.29
I(0) (real space) i0_real1.4550e+07
I(0) uncertainty (real space) i0_real_error1.6980e+05
Rg (reciprocal space) rg_reciprocal18.37
I(0) (reciprocal space) i0_reciprocal14550000.0000
Solution quality estimate total_estimate0.8876
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary23.5
Skewness Skewness skewness0.074
Kurtosis Kurtosis kurtosis-0.450
Angular range angular_range— – 0.4300 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha2527000.0000
Real-space data points n_real_points74
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.850; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.987; Smooth: 0.996

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_idd4cq0a_
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_id4cq0A00
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)