3ixh

X-ray crystal structure of the extended-spectrum AmpC Y221G mutant beta-lactamase in complex with cefotaxime at 2.3 Angstrom resolution

Method: X-RAY DIFFRACTION Dmax: 101.3 Å Quality: GOOD

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

Beta-lactamase

Escherichia coli

UniProt P00811

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 20–377 Mutation:Y221G No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 8.7;293 K;1.7M KPi, pH 8.7, vapor diffusion, hanging drop, temperature 293K Resolution 2.30 Å R-free 0.248
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 20–377 Mutation:Y221G CEF CEFOTAXIME, C3' cleaved, open, bound form × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 8.7;293 K;1.7M KPi, pH 8.7, vapor diffusion, hanging drop, temperature 293K Resolution 2.30 Å R-free 0.248

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.

114 other PDB entries and 228 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name AMPC_ECOLI
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–358; UniProt 20–377 Author chain B; PDBConstruct 1–358; UniProt 20–377

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 3ixh

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id3ixh
Deposition date deposition_date2009-09-04
Structure title titleX-ray crystal structure of the extended-spectrum AmpC Y221G mutant beta-lactamase in complex with cefotaxime at 2.3 Angstrom resolution
Keywords keywordsserine hydrolase, beta-lactamase, cephalosporinase, extended-spectrum antibiotic resistance, Antibiotic resistance, Hydrolase; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier29.19
Radius of gyration Rg (electron density) rg_electron28.47
Forward intensity I(0) i095493500.00
Molecular weight molecular_weight79294.0 kDa
Excluded volume excluded_volume100130 ų
Envelope volume envelope_volume119210 ų
Hydration-shell volume shell_volume35086 ų
Envelope diameter envelope_diameter104.8
Shell Rg shell_rg35.47
Envelope Rg envelope_rg28.75
Shape Rg shape_rg28.48
Total Rg total_rg29.13
Total atoms total_atoms5610
Residues n_residues716
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 dmax101.3
Rg (real space) rg_real29.24
Rg uncertainty (real space) rg_real_error1.01
I(0) (real space) i0_real9.5490e+07
I(0) uncertainty (real space) i0_real_error1.4300e+06
Rg (reciprocal space) rg_reciprocal29.22
I(0) (reciprocal space) i0_reciprocal95490000.0000
Solution quality estimate total_estimate0.7821
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks3
Primary peak position r_peak_primary30.0
Skewness Skewness skewness0.400
Kurtosis Kurtosis kurtosis-0.393
Angular range angular_range— – 0.2700 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha37140000.0000
Real-space data points n_real_points55
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.739; Stabil: 0.993; Sysdev: 1.000; Positv: 1.000; Valcen: 0.967; Smooth: 0.000

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_idd3ixha_
Class classe — Multi-domain proteins (alpha and beta)
Fold Fold folde.3 — beta-lactamase/transpeptidase-like
Superfamily Superfamily superfamilye.3.1 — beta-lactamase/transpeptidase-like
Family Family familye.3.1.1 — beta-Lactamase/D-ala carboxypeptidase
Domain ID domain_idd3ixhb_
Class classe — Multi-domain proteins (alpha and beta)
Fold Fold folde.3 — beta-lactamase/transpeptidase-like
Superfamily Superfamily superfamilye.3.1 — beta-lactamase/transpeptidase-like
Family Family familye.3.1.1 — beta-Lactamase/D-ala carboxypeptidase

CATH v4.4 (2 domains)

Domain ID domain_id3ixhA00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology710 — Beta-lactamase
Homologous superfamily homologous superfamily10 — DD-peptidase/beta-lactamase superfamily
Domain ID domain_id3ixhB00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology710 — Beta-lactamase
Homologous superfamily homologous superfamily10 — DD-peptidase/beta-lactamase superfamily

8. Citations (1)

9. Files and Curves (10)