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1dr3

2.3 ANGSTROMS CRYSTAL STRUCTURE OF CHICKEN LIVER DIHYDROFOLATE REDUCTASE COMPLEXED WITH THIONADP+ AND BIOPTERIN

Method: X-RAY DIFFRACTION
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1. Protein Identity and Related Structures Protein Identity & Related Structures

DIHYDROFOLATE REDUCTASE

Gallus gallus

UniProt P00378

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein monomer Monomer Protein 1 CALCIUM ION × 1 7-THIONICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 7,8-DIHYDROBIOPTERIN × 1 water × 1 Consistent with protein count
2 Protein homooligomer Homooligomer Protein 2 CALCIUM ION × 2 7-THIONICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 2 7,8-DIHYDROBIOPTERIN × 2 water × 2 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
1dr1 1dr2 1dr3 1dr4 1dr5 1dr6 1dr7 8dfr

8 assemblies

Homodimer
1dr1 1dr2 1dr3 1dr4

4 assemblies

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex

None

View Construct and Data Evidence
UniProt name DYR_CHICK
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–189； UniProt 1–189

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.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id1dr3
Deposition date deposition_date1992-03-14
Structure title title2.3 ANGSTROMS CRYSTAL STRUCTURE OF CHICKEN LIVER DIHYDROFOLATE REDUCTASE COMPLEXED WITH THIONADP+ AND BIOPTERIN
Keywords keywordsOXIDOREDUCTASE; OXIDOREDUCTASE
Experimental Method methodX-RAY DIFFRACTION
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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

1dr3__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1dr3__assembly_1__model_1 | I(q)

10-2 10-1 105 106 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

1dr3__assembly_1__model_1 | P(r) · Pending

The new assembly/model P(r) has not been calculated yet This placeholder does not display legacy data r (Angstrom) P(r)
P(r) will be calculated and displayed separately for the same assembly/model.
Rg（Guinier）17.17 Å
Rg (electron density)16.01 Å
Total Rg17.09 Å
Atom count1555
Residues186
Excluded volume27726 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1dr3__assembly_1__model_1 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 1dr3__assembly_2__model_1 dimeric （2） Success 4.1.3-1-20251215 (887e7ef) View Download
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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (5)

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6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd1dr3a_
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.71.1.1 — Dihydrofolate reductases

CATH v4.4 (1 domains)

Domain ID domain_id1dr3A00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology430 — Dihydrofolate Reductase, subunit A
Homologous superfamily homologous superfamily10 — Dihydrofolate Reductase, subunit A
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7. Citations (6)