1cg1

STRUCTURE OF THE MUTANT (K16Q) OF ADENYLOSUCCINATE SYNTHETASE FROM E. COLI COMPLEXED WITH HADACIDIN, GDP, 6-PHOSPHORYL-IMP, AND MG2+

Method: X-RAY DIFFRACTION Dmax: 73.2 Å Quality: REASONABLE

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

PROTEIN (ADENYLOSUCCINATE SYNTHETASE)

Escherichia coli K12

UniProt P0A7D4

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 1–431 Mutation:K16Q MG MAGNESIUM ION × 2 HDA HADACIDIN × 2 IMO 6-O-PHOSPHORYL INOSINE MONOPHOSPHATE × 2 GDP GUANOSINE-5'-DIPHOSPHATE × 2 X-RAY DIFFRACTION X-ray crystallization conditions:pH 6.5;13% PEG 8000, 100MM NA-CACODYLATE(PH 6.5) Resolution 2.50 Å R-free 0.249

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.

21 other PDB entries and 23 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name PURA_ECOLI
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–431; UniProt 1–431

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 1cg1

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1cg1
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1cg1
Deposition date deposition_date1999-03-26
Structure title titleSTRUCTURE OF THE MUTANT (K16Q) OF ADENYLOSUCCINATE SYNTHETASE FROM E. COLI COMPLEXED WITH HADACIDIN, GDP, 6-PHOSPHORYL-IMP, AND MG2+
Keywords keywordsLIGASE, GTP-HYDROLYSING ENZYMES, PURINE 2 NUCLEOTIDE BIOSYNTHESIS, 6-PHOSPORYL-IMP; LIGASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier22.51
Radius of gyration Rg (electron density) rg_electron21.77
Forward intensity I(0) i040447300.00
Molecular weight molecular_weight48218.0 kDa
Excluded volume excluded_volume59935 ų
Envelope volume envelope_volume67640 ų
Hydration-shell volume shell_volume25560 ų
Envelope diameter envelope_diameter78.0
Shell Rg shell_rg29.15
Envelope Rg envelope_rg22.11
Shape Rg shape_rg21.78
Total Rg total_rg22.55
Total atoms total_atoms3385
Residues n_residues431
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 dmax73.2
Rg (real space) rg_real22.45
Rg uncertainty (real space) rg_real_error0.34
I(0) (real space) i0_real4.0450e+07
I(0) uncertainty (real space) i0_real_error5.0950e+05
Rg (reciprocal space) rg_reciprocal22.47
I(0) (reciprocal space) i0_reciprocal40450000.0000
Solution quality estimate total_estimate0.7027
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary26.6
Skewness Skewness skewness0.311
Kurtosis Kurtosis kurtosis-0.301
Angular range angular_range— – 0.3550 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha9549000.0000
Real-space data points n_real_points67
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.856; Stabil: 1.000; Sysdev: 0.189; Positv: 1.000; Valcen: 0.999; Smooth: 0.996

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd1cg1a_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamilyc.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family familyc.37.1.10 — Nitrogenase iron protein-like

CATH v4.4 (3 domains)

Domain ID domain_id1cg1A01
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology440 — Adenylosuccinate Synthetase; Chain A, domain 1
Homologous superfamily homologous superfamily10 — Adenylosuccinate Synthetase, subunit A, domain 1
Domain ID domain_id1cg1A02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology300 — Adenylosuccinate Synthetase, subunit A; domain 2
Homologous superfamily homologous superfamily10 — Adenylosuccinate Synthetase, subunit A, domain 2
Domain ID domain_id1cg1A03
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology170 — Adenylosuccinate Synthetase; Chain A, domain 3
Homologous superfamily homologous superfamily10 — Adenylosuccinate Synthetase, subunit A, domain 3

8. Citations (1)

9. Files and Curves (10)