9ssb

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

Method: X-RAY DIFFRACTION Dmax: 162.4 Å Quality: GOOD

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 2 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 30–657 Not recorded ;alpha-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 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 ZED L-PROLINE, 1-[(2S)-3-MERCAPTO-2-METHYL-1-OXOPROPYL]-4-(PHENYLTHIO)-, 4S × 1 PEG DI(HYDROXYETHYL)ETHER × 3 EDO 1,2-ETHANEDIOL × 5 ACT ACETATE ION × 1 PGE TRIETHYLENE GLYCOL × 1 CA CALCIUM ION × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 CL CHLORIDE ION × 1 12P DODECAETHYLENE 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 2.00 Å R-free 0.226
2 Other combination Monomer Protein × 1 其他Polymer 3 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 30–657 Not recorded ;alpha-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 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ZN ZINC ION × 1 ZED L-PROLINE, 1-[(2S)-3-MERCAPTO-2-METHYL-1-OXOPROPYL]-4-(PHENYLTHIO)-, 4S × 1 PEG DI(HYDROXYETHYL)ETHER × 2 EDO 1,2-ETHANEDIOL × 4 CA CALCIUM ION × 1 CL CHLORIDE ION × 1 PE8 3,6,9,12,15,18,21-HEPTAOXATRICOSANE-1,23-DIOL × 1 TRS 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL × 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 2.00 Å R-free 0.226
3 Other combination Monomer Protein × 1 其他Polymer 3 PDB declaration: monomeric(1) Consistent with protein copy count Chain C; UniProt 30–657 Not recorded alpha-L-fucopyranose-(1-6)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ZN ZINC ION × 1 ZED L-PROLINE, 1-[(2S)-3-MERCAPTO-2-METHYL-1-OXOPROPYL]-4-(PHENYLTHIO)-, 4S × 1 PEG DI(HYDROXYETHYL)ETHER × 3 EDO 1,2-ETHANEDIOL × 6 PGE TRIETHYLENE GLYCOL × 1 CA CALCIUM ION × 1 CL CHLORIDE ION × 1 TRS 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL × 1 XPE 3,6,9,12,15,18,21,24,27-NONAOXANONACOSANE-1,29-DIOL × 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 2.00 Å R-free 0.226
4 Other combination Monomer Protein × 1 其他Polymer 3 PDB declaration: monomeric(1) Consistent with protein copy count Chain D; UniProt 30–657 Not recorded ;alpha-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 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ZN ZINC ION × 1 ZED L-PROLINE, 1-[(2S)-3-MERCAPTO-2-METHYL-1-OXOPROPYL]-4-(PHENYLTHIO)-, 4S × 1 PEG DI(HYDROXYETHYL)ETHER × 1 EDO 1,2-ETHANEDIOL × 2 PGE TRIETHYLENE GLYCOL × 1 CA CALCIUM ION × 1 CL CHLORIDE ION × 1 PG4 TETRAETHYLENE 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 2.00 Å R-free 0.226

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 147 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 1–628; UniProt 30–657 Author chain B; PDBConstruct 1–628; UniProt 30–657 Author chain C; PDBConstruct 1–628; UniProt 30–657 Author chain D; PDBConstruct 1–628; UniProt 30–657

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 9ssb

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id9ssb
Deposition date deposition_date2025-09-25
Structure title titleHuman angiotensin 1-converting enzyme N-domain in complex with zofenoprilat
Keywords keywordsinhibitor, complex, metalloprotease, HYDROLASE; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier50.33
Radius of gyration Rg (electron density) rg_electron49.92
Forward intensity I(0) i01191520000.00
Molecular weight molecular_weight291480.0 kDa
Excluded volume excluded_volume364950 ų
Envelope volume envelope_volume489630 ų
Hydration-shell volume shell_volume79173 ų
Envelope diameter envelope_diameter164.8
Shell Rg shell_rg57.29
Envelope Rg envelope_rg48.27
Shape Rg shape_rg49.92
Total Rg total_rg50.16
Total atoms total_atoms20570
Residues n_residues2422
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 dmax162.4
Rg (real space) rg_real50.24
Rg uncertainty (real space) rg_real_error1.69
I(0) (real space) i0_real1.1920e+09
I(0) uncertainty (real space) i0_real_error2.3780e+07
Rg (reciprocal space) rg_reciprocal50.39
I(0) (reciprocal space) i0_reciprocal1192000000.0000
Solution quality estimate total_estimate0.8816
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary73.3
Skewness Skewness skewness0.146
Kurtosis Kurtosis kurtosis-0.612
Angular range angular_range— – 0.1550 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha355800000.0000
Real-space data points n_real_points32
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.903; Stabil: 0.998; Sysdev: 1.000; Positv: 1.000; Valcen: 0.993; Smooth: 0.759

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (21)

8. Citations (1)

9. Files and Curves (10)