3npm

Crystal Structure of the C47A/A241C disulfide-linked C6 Aspartate Transcarbamoylase enzyme

Method: X-RAY DIFFRACTION Dmax: 62.2 Å Quality: EXCELLENT

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

Aspartate carbamoyltransferase catalytic chain

Escherichia coli

UniProt P0A786

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 × 6 PDB declaration: hexameric(6) Consistent with protein copy count Chain A; UniProt 2–311 Mutation:A48C; C242A PO4 PHOSPHATE ION × 12 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7.5;293 K;10 mg/mL of C47A/A241C c6 in 100 mM tris-acetate pH 8.3, in a 1:1 ratio (v/v), with reservoir. Crystallization buffer consisted of 40% PEG 1000, 100 mM NH4H2PO4, and 100 mM HEPES, VAPOR DIFFUSION, HANGING DROP, temperature 293K Resolution 2.10 Å R-free 0.205

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.

59 other PDB entries and 61 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name PYRB_ECOLI
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–310; UniProt 2–311

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 3npm

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3npm
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2. Structure Basics 2. Structure Basics

Entry ID entry_id3npm
Deposition date deposition_date2010-06-28
Structure title titleCrystal Structure of the C47A/A241C disulfide-linked C6 Aspartate Transcarbamoylase enzyme
Keywords keywordsaspartate transcarbamoylase, disulfide bond, phosphate, catalysis, product release, cooperativity, allostery, TRANSFERASE; TRANSFERASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier20.07
Radius of gyration Rg (electron density) rg_electron19.07
Forward intensity I(0) i020521000.00
Molecular weight molecular_weight34181.0 kDa
Excluded volume excluded_volume42690 ų
Envelope volume envelope_volume47776 ų
Hydration-shell volume shell_volume20712 ų
Envelope diameter envelope_diameter63.8
Shell Rg shell_rg25.65
Envelope Rg envelope_rg19.37
Shape Rg shape_rg19.08
Total Rg total_rg19.91
Total atoms total_atoms2404
Residues n_residues307
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 dmax62.2
Rg (real space) rg_real19.99
Rg uncertainty (real space) rg_real_error0.25
I(0) (real space) i0_real2.0520e+07
I(0) uncertainty (real space) i0_real_error2.2710e+05
Rg (reciprocal space) rg_reciprocal20.01
I(0) (reciprocal space) i0_reciprocal20520000.0000
Solution quality estimate total_estimate0.9019
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary24.9
Skewness Skewness skewness0.239
Kurtosis Kurtosis kurtosis-0.392
Angular range angular_range— – 0.3950 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha4430000.0000
Real-space data points n_real_points71
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.910; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.992; Smooth: 0.999

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd3npma1
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.78 — ATC-like
Superfamily Superfamily superfamilyc.78.1 — Aspartate/ornithine carbamoyltransferase
Family Family familyc.78.1.1 — Aspartate/ornithine carbamoyltransferase
Domain ID domain_idd3npma2
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.78 — ATC-like
Superfamily Superfamily superfamilyc.78.1 — Aspartate/ornithine carbamoyltransferase
Family Family familyc.78.1.1 — Aspartate/ornithine carbamoyltransferase

CATH v4.4 (2 domains)

Domain ID domain_id3npmA01
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily1370 — Aspartate/ornithine carbamoyltransferase
Domain ID domain_id3npmA02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily1370 — Aspartate/ornithine carbamoyltransferase

8. Citations (1)

9. Files and Curves (10)