9qat

Human angiotensin-1 converting enzyme N-domain in complex with quinaprilat

Method: X-RAY DIFFRACTION Dmax: 110.2 Å Quality: EXCELLENT

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

Angiotensin-converting enzyme, soluble form

Homo sapiens

UniProt P12821

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Other combination Monomer Protein × 1 其他Polymer 3 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 30–638 Not recorded 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ;beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose ; × 1 alpha-L-fucopyranose-(1-6)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ZN ZINC ION × 1 NA SODIUM ION × 1 PEG DI(HYDROXYETHYL)ETHER × 6 EDO 1,2-ETHANEDIOL × 3 A1I5A quinaprilat × 1 P6G HEXAETHYLENE GLYCOL × 1 ACT ACETATE ION × 3 CL CHLORIDE ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 8.5;289 K;0.1 M Tris/Bicine pH 8.5, 0.06 M Divalent Cations, 30% PEG550MME/PEG20000 Resolution 2.20 Å R-free 0.210
2 Other combination Monomer Protein × 1 其他Polymer 2 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 30–638 Not recorded alpha-L-fucopyranose-(1-6)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ZN ZINC ION × 1 PEG DI(HYDROXYETHYL)ETHER × 1 A1I5A quinaprilat × 1 ACT ACETATE ION × 1 CL CHLORIDE ION × 1 PG4 TETRAETHYLENE GLYCOL × 2 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 CA CALCIUM ION × 1 PGE TRIETHYLENE GLYCOL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 8.5;289 K;0.1 M Tris/Bicine pH 8.5, 0.06 M Divalent Cations, 30% PEG550MME/PEG20000 Resolution 2.20 Å R-free 0.210

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.

89 other PDB entries and 149 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name ACE_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–609; UniProt 30–638 Author chain B; PDBConstruct 1–609; UniProt 30–638

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 9qat

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9qat
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9qat
Deposition date deposition_date2025-02-28
Structure title titleHuman angiotensin-1 converting enzyme N-domain in complex with quinaprilat
Keywords keywordsInhibitor, complex, quinaprilat, hypertension, HYDROLASE; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier34.94
Radius of gyration Rg (electron density) rg_electron34.22
Forward intensity I(0) i0607049000.00
Molecular weight molecular_weight134990.0 kDa
Excluded volume excluded_volume131310 ų
Envelope volume envelope_volume219910 ų
Hydration-shell volume shell_volume51714 ų
Envelope diameter envelope_diameter109.1
Shell Rg shell_rg42.36
Envelope Rg envelope_rg34.12
Shape Rg shape_rg34.16
Total Rg total_rg34.70
Total atoms total_atoms10236
Residues n_residues1206
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 dmax110.2
Rg (real space) rg_real34.86
Rg uncertainty (real space) rg_real_error0.57
I(0) (real space) i0_real6.0700e+08
I(0) uncertainty (real space) i0_real_error8.4280e+06
Rg (reciprocal space) rg_reciprocal34.92
I(0) (reciprocal space) i0_reciprocal607100000.0000
Solution quality estimate total_estimate0.9038
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary39.2
Skewness Skewness skewness0.222
Kurtosis Kurtosis kurtosis-0.637
Angular range angular_range— – 0.2250 −1
Current regularization parameter α current_alpha0.0001
Highest regularization parameter α highest_alpha119200000.0000
Real-space data points n_real_points46
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.936; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 1.000; Smooth: 0.937

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (18)

8. Citations (1)

9. Files and Curves (10)