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2cig

Dihydrofolate reductase from Mycobacterium tuberculosis inhibited by the acyclic 4R isomer of INH-NADP a derivative of the prodrug isoniazid.

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

DIHYDROFOLATE REDUCTASE

MYCOBACTERIUM TUBERCULOSIS

UniProt P0A546

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein monomer Monomer Protein 1 (4R)-ISONICOTINIC-ACETYL-NICOTINAMIDE-ADENINE DINUCLEOTIDE × 1 GLYCEROL × 4 SULFATE ION × 2 water × 1 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
1df7 1dg5 1dg7 1dg8 2cig 4kl9 4klx 4klx 4km0 4km0 4km2 4km2

18 assemblies; showing the first 12

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex

None

View Construct and Data Evidence
UniProt name DYR_MYCTU
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–159； 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.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id2cig
Deposition date deposition_date2006-03-20
Structure title titleDihydrofolate reductase from Mycobacterium tuberculosis inhibited by the acyclic 4R isomer of INH-NADP a derivative of the prodrug isoniazid.
Keywords keywordsNADP, ISONIAZID, REDUCTASE, INHIBITOR, BISUBSTRATE, TUBERCULOSIS, OXIDOREDUCTASE, ONE-CARBON METABOLISM; 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.

2cig__assembly_1__model_1

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

Download this curve (.dat)

2cig__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.

2cig__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）16.57 Å
Rg (electron density)15.22 Å
Total Rg16.30 Å
Atom count1334
Residues159
Excluded volume23355 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 2cig__assembly_1__model_1 monomeric （1） 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_idd2ciga_
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_id2cigA00
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 (1)