9kz4

Dihydrofolate reductase binding to NADPH and trimethoprim-tetramethylrhodamine

Method: X-RAY DIFFRACTION Dmax: 71.0 Å Quality: GOOD

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

Dihydrofolate reductase

Escherichia coli K-12

UniProt P0ABQ4

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 B; UniProt 2–159 Not recorded NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 A1EHX [9-[5-[2-[4-[[2,4-bis(azanyl)pyrimidin-5-yl]methyl]-2,6-dimethoxy-phenoxy]ethylcarbamoyl]-2-carboxy-phenyl]-6-(dimethylamino)xanthen-3-ylidene]-dimethyl-azanium × 1 MG MAGNESIUM ION × 3 X-RAY DIFFRACTION X-ray crystallization conditions:EVAPORATION;300 K;PEG 3350, Bis-Tris, magnesium dichloride Resolution 1.71 Å R-free 0.196
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 2–159 Not recorded NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 A1EHX [9-[5-[2-[4-[[2,4-bis(azanyl)pyrimidin-5-yl]methyl]-2,6-dimethoxy-phenoxy]ethylcarbamoyl]-2-carboxy-phenyl]-6-(dimethylamino)xanthen-3-ylidene]-dimethyl-azanium × 1 MG MAGNESIUM ION × 4 X-RAY DIFFRACTION X-ray crystallization conditions:EVAPORATION;300 K;PEG 3350, Bis-Tris, magnesium dichloride Resolution 1.71 Å R-free 0.196

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.

141 other PDB entries and 155 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name DYR_ECOLI
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 2–159; UniProt 2–159 Author chain B; PDBConstruct 2–159; UniProt 2–159

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 9kz4

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9kz4
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9kz4
Deposition date deposition_date2024-12-09
最后修订 last_revision2025-01-22
Structure title titleDihydrofolate reductase binding to NADPH and trimethoprim-tetramethylrhodamine
Keywords keywordsenzyme, self-labeling tag, TMP-tag, fluorescence imaging, BIOSYNTHETIC PROTEIN; BIOSYNTHETIC PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier23.13
Radius of gyration Rg (electron density) rg_electron22.71
Forward intensity I(0) i047778700.00
Molecular weight molecular_weight35856.0 kDa
Excluded volume excluded_volume34556 ų
Envelope volume envelope_volume56659 ų
Hydration-shell volume shell_volume21008 ų
Envelope diameter envelope_diameter73.5
Shell Rg shell_rg28.86
Envelope Rg envelope_rg22.66
Shape Rg shape_rg22.74
Total Rg total_rg23.20
Total atoms total_atoms2703
Residues n_residues318
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 dmax71.0
Rg (real space) rg_real23.11
Rg uncertainty (real space) rg_real_error0.48
I(0) (real space) i0_real4.7780e+07
I(0) uncertainty (real space) i0_real_error6.6340e+05
Rg (reciprocal space) rg_reciprocal23.12
I(0) (reciprocal space) i0_reciprocal47780000.0000
Solution quality estimate total_estimate0.8326
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary24.1
Skewness Skewness skewness0.262
Kurtosis Kurtosis kurtosis-0.650
Angular range angular_range— – 0.3450 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha7844000.0000
Real-space data points n_real_points66
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.948; Stabil: 0.997; Sysdev: 1.000; Positv: 1.000; Valcen: 0.983; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

8. Citations (1)

9. Files and Curves (10)