4x5g

ecDHFR complexed with folate and NADP+ at 270 MPa

Method: X-RAY DIFFRACTION Dmax: 87.4 Å Quality: GOOD

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

Dihydrofolate reductase

Escherichia coli K12

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 A; UniProt 1–159 Not recorded FOL FOLIC ACID × 1 NAP NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 BME BETA-MERCAPTOETHANOL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;277 K;PEG 6000, imidazole, calcium chloride Resolution 1.90 Å R-free 0.209
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 1–159 Not recorded FOL FOLIC ACID × 1 NAP NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 BME BETA-MERCAPTOETHANOL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;277 K;PEG 6000, imidazole, calcium chloride Resolution 1.90 Å R-free 0.209

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 4–162; UniProt 1–159 Author chain B; PDBConstruct 4–162; UniProt 1–159

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 4x5g

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4x5g
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4x5g
Deposition date deposition_date2014-12-05
Structure title titleecDHFR complexed with folate and NADP+ at 270 MPa
Keywords keywordsOXIDOREDUCTASE; OXIDOREDUCTASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier24.86
Radius of gyration Rg (electron density) rg_electron24.04
Forward intensity I(0) i027541900.00
Molecular weight molecular_weight38552.0 kDa
Excluded volume excluded_volume47355 ų
Envelope volume envelope_volume57468 ų
Hydration-shell volume shell_volume20639 ų
Envelope diameter envelope_diameter90.9
Shell Rg shell_rg30.08
Envelope Rg envelope_rg24.02
Shape Rg shape_rg24.08
Total Rg total_rg24.62
Total atoms total_atoms2708
Residues n_residues319
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 dmax87.4
Rg (real space) rg_real25.00
Rg uncertainty (real space) rg_real_error0.71
I(0) (real space) i0_real2.7540e+07
I(0) uncertainty (real space) i0_real_error4.1390e+05
Rg (reciprocal space) rg_reciprocal24.97
I(0) (reciprocal space) i0_reciprocal27540000.0000
Solution quality estimate total_estimate0.8442
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary23.6
Skewness Skewness skewness0.429
Kurtosis Kurtosis kurtosis-0.404
Angular range angular_range— – 0.3200 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha4278000.0000
Real-space data points n_real_points64
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.753; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.718; Smooth: 0.995

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 5 domains

SCOP 2.08 (3 domains)

Domain ID domain_idd4x5ga_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.71 — Dihydrofolate reductase-like
Superfamily Superfamily superfamilyc.71.1 — Dihydrofolate reductase-like
Family Family familyc.71.1.0 — automated matches
Domain ID domain_idd4x5gb1
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.71 — Dihydrofolate reductase-like
Superfamily Superfamily superfamilyc.71.1 — Dihydrofolate reductase-like
Family Family familyc.71.1.0 — automated matches
Domain ID domain_idd4x5gb2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags

CATH v4.4 (2 domains)

Domain ID domain_id4x5gA00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology430 — Dihydrofolate Reductase, subunit A
Homologous superfamily homologous superfamily10 — Dihydrofolate Reductase, subunit A
Domain ID domain_id4x5gB00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology430 — Dihydrofolate Reductase, subunit A
Homologous superfamily homologous superfamily10 — Dihydrofolate Reductase, subunit A

8. Citations (1)

9. Files and Curves (10)