3lxe

Human Carbonic Anhydrase I in complex with topiramate

Method: X-RAY DIFFRACTION Dmax: 93.9 Å Quality: GOOD

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

Carbonic anhydrase 1

OrganismNot specified

UniProt P00915

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 2–261 Not recorded ZN ZINC ION × 1 TOR [(3aS,5aR,8aR,8bS)-2,2,7,7-tetramethyltetrahydro-3aH-bis[1,3]dioxolo[4,5-b:4',5'-d]pyran-3a-yl]methyl sulfamate × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 8.5;293 K;30% w/v PEG 4000, 0.2M sodium acetate, 0.1M TRIS-HCl, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K Resolution 1.90 Å R-free 0.228
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 2–261 Not recorded ZN ZINC ION × 1 TOR [(3aS,5aR,8aR,8bS)-2,2,7,7-tetramethyltetrahydro-3aH-bis[1,3]dioxolo[4,5-b:4',5'-d]pyran-3a-yl]methyl sulfamate × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 8.5;293 K;30% w/v PEG 4000, 0.2M sodium acetate, 0.1M TRIS-HCl, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K Resolution 1.90 Å R-free 0.228

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.

55 other PDB entries and 100 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CAH1_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–260; UniProt 2–261 Author chain B; PDBConstruct 1–260; UniProt 2–261

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 3lxe

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id3lxe
Deposition date deposition_date2010-02-25
Structure title titleHuman Carbonic Anhydrase I in complex with topiramate
Keywords keywordscarbonic anhydrase 1, topiramate, enzyme-inhibitor complex, Lyase; LYASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier28.28
Radius of gyration Rg (electron density) rg_electron28.00
Forward intensity I(0) i055794500.00
Molecular weight molecular_weight57545.0 kDa
Excluded volume excluded_volume71543 ų
Envelope volume envelope_volume84453 ų
Hydration-shell volume shell_volume26645 ų
Envelope diameter envelope_diameter98.7
Shell Rg shell_rg33.49
Envelope Rg envelope_rg28.01
Shape Rg shape_rg27.99
Total Rg total_rg28.56
Total atoms total_atoms4062
Residues n_residues512
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 dmax93.9
Rg (real space) rg_real28.56
Rg uncertainty (real space) rg_real_error0.95
I(0) (real space) i0_real5.5790e+07
I(0) uncertainty (real space) i0_real_error9.0510e+05
Rg (reciprocal space) rg_reciprocal28.48
I(0) (reciprocal space) i0_reciprocal55790000.0000
Solution quality estimate total_estimate0.8289
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary26.8
Skewness Skewness skewness0.500
Kurtosis Kurtosis kurtosis-0.513
Angular range angular_range— – 0.2800 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha11040000.0000
Real-space data points n_real_points57
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.709; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.767; Smooth: 0.880

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd3lxea_
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
Domain ID domain_idd3lxeb_
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 (2 domains)

Domain ID domain_id3lxeA00
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology200 — Carbonic Anhydrase II
Homologous superfamily homologous superfamily10 — Alpha carbonic anhydrase
Domain ID domain_id3lxeB00
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)