1qje

Isopenicillin N synthase from Aspergillus nidulans (IP1 - Fe complex)

Method: X-RAY DIFFRACTION Dmax: 65.2 Å Quality: GOOD

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

ISOPENICILLIN N SYNTHASE

Emericella nidulans (strain FGSC A4 / ATCC 38163 / CBS 112.46 / NRRL 194 / M139)

UniProt P05326

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 1–331 Not recorded SO4 SULFATE ION × 1 IP1 ISOPENICILLIN N × 1 ACV L-D-(A-AMINOADIPOYL)-L-CYSTEINYL-D-VALINE × 1 FE2 FE (II) ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:pH 8.5;1.8M LITHIUM SULPHATE, 100MM TRIS/HCL (PH8.5), (5MM FERROUS SULPHATE, 70 MM ACMC, 50MG/ML IPNS), pH 8.50 Resolution 1.35 Å R-free 0.187

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.

88 other PDB entries and 88 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name IPNS_EMENI
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–331; UniProt 1–331

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 1qje

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id1qje
Deposition date deposition_date1999-06-23
Structure title titleIsopenicillin N synthase from Aspergillus nidulans (IP1 - Fe complex)
Keywords keywordsB-LACTAM ANTIBIOTIC, OXYGENASE, PENICILLIN BIOSYNTHESIS, ENZYME-PRODUCT COMPLEX; B-LACTAM ANTIBIOTIC
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier20.50
Radius of gyration Rg (electron density) rg_electron19.23
Forward intensity I(0) i024325800.00
Molecular weight molecular_weight37649.0 kDa
Excluded volume excluded_volume46932 ų
Envelope volume envelope_volume52591 ų
Hydration-shell volume shell_volume22314 ų
Envelope diameter envelope_diameter66.5
Shell Rg shell_rg26.23
Envelope Rg envelope_rg19.53
Shape Rg shape_rg19.22
Total Rg total_rg20.16
Total atoms total_atoms2662
Residues n_residues327
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 dmax65.2
Rg (real space) rg_real20.37
Rg uncertainty (real space) rg_real_error0.28
I(0) (real space) i0_real2.4330e+07
I(0) uncertainty (real space) i0_real_error2.9060e+05
Rg (reciprocal space) rg_reciprocal20.39
I(0) (reciprocal space) i0_reciprocal24330000.0000
Solution quality estimate total_estimate0.8897
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary27.0
Skewness Skewness skewness0.140
Kurtosis Kurtosis kurtosis-0.401
Angular range angular_range— – 0.3900 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha5994000.0000
Real-space data points n_real_points71
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.863; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.986; Smooth: 0.987

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd1qjea_
Class classb — All beta proteins
Fold Fold foldb.82 — Double-stranded beta-helix
Superfamily Superfamily superfamilyb.82.2 — Clavaminate synthase-like
Family Family familyb.82.2.1 — Penicillin synthase-like

CATH v4.4 (1 domains)

Domain ID domain_id1qjeA00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology120 — Jelly Rolls
Homologous superfamily homologous superfamily330 — B-lactam Antibiotic, Isopenicillin N Synthase; Chain

8. Citations (4)

9. Files and Curves (10)