1acl

QUATERNARY LIGAND BINDING TO AROMATIC RESIDUES IN THE ACTIVE-SITE GORGE OF ACETYLCHOLINESTERASE

Method: X-RAY DIFFRACTION Dmax: 75.3 Å Quality: GOOD

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

ACETYLCHOLINESTERASE

Torpedo californica

UniProt P04058

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 homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 22–556 Not recorded DME DECAMETHONIUM ION × 2 X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 2.80 Å

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.

124 other PDB entries and 125 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name ACES_TORCA
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–535; UniProt 22–556

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 1acl

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1acl
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1acl
Deposition date deposition_date1993-08-18
Structure title titleQUATERNARY LIGAND BINDING TO AROMATIC RESIDUES IN THE ACTIVE-SITE GORGE OF ACETYLCHOLINESTERASE
Keywords keywordsHYDROLASE(CARBOXYLIC ESTERASE); HYDROLASE(CARBOXYLIC ESTERASE)
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier23.57
Radius of gyration Rg (electron density) rg_electron22.35
Forward intensity I(0) i052649800.00
Molecular weight molecular_weight58411.0 kDa
Excluded volume excluded_volume73761 ų
Envelope volume envelope_volume81373 ų
Hydration-shell volume shell_volume29347 ų
Envelope diameter envelope_diameter80.1
Shell Rg shell_rg30.43
Envelope Rg envelope_rg22.61
Shape Rg shape_rg22.30
Total Rg total_rg23.40
Total atoms total_atoms4128
Residues n_residues527
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 dmax75.3
Rg (real space) rg_real23.42
Rg uncertainty (real space) rg_real_error0.43
I(0) (real space) i0_real5.2650e+07
I(0) uncertainty (real space) i0_real_error6.3280e+05
Rg (reciprocal space) rg_reciprocal23.46
I(0) (reciprocal space) i0_reciprocal52650000.0000
Solution quality estimate total_estimate0.8093
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks3
Primary peak position r_peak_primary29.4
Skewness Skewness skewness0.156
Kurtosis Kurtosis kurtosis-0.382
Angular range angular_range— – 0.3350 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha14540000.0000
Real-space data points n_real_points65
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.844; Stabil: 0.997; Sysdev: 1.000; Positv: 1.000; Valcen: 0.993; Smooth: 0.000

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_idd1acla_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.69 — alpha/beta-Hydrolases
Superfamily Superfamily superfamilyc.69.1 — alpha/beta-Hydrolases
Family Family familyc.69.1.1 — Acetylcholinesterase-like

CATH v4.4 (1 domains)

Domain ID domain_id1aclA00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily1820 — Alpha/Beta hydrolase fold, catalytic domain

8. Citations (2)

9. Files and Curves (10)