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1an2

RECOGNITION BY MAX OF ITS COGNATE DNA THROUGH A DIMERIC B/HLH/Z DOMAIN

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

PROTEIN (TRANSCRIPTION FACTOR MAX (TF MAX))

OrganismNot specified

UniProt P61244

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Homooligomer Protein 2 DNA 2 ;DNA (5'-D(*GP*TP*GP*TP*AP*GP*GP*TP*CP*AP*CP*GP*TP*GP*AP*CP*C P*TP*AP*CP*AP*C)- 3') ; × 2 Consistent with all polymers

Other States of the Same Protein in the Database

Monomer

None

Homodimer
1r05

1 assemblies

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1an2 1hlo 1nkp 1nkp 1nlw 1nlw 5eyo 5eyo 6g6j 6g6j 6g6k 6g6k

18 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name MAX_HUMAN
Isoform —
PDB entities 2
Chains and sequence ranges Author chain A； PDBConstruct 1–86； UniProt 22–107

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_id1an2
Deposition date deposition_date1996-09-06
Structure title titleRECOGNITION BY MAX OF ITS COGNATE DNA THROUGH A DIMERIC B/HLH/Z DOMAIN
Keywords keywordsPROTEIN-DNA COMPLEX, DOUBLE HELIX, TRANSCRIPTION-DNA COMPLEX; TRANSCRIPTION/DNA
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.

1an2__assembly_1__model_1

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

Download this curve (.dat)

1an2__assembly_1__model_1 | I(q)

10-2 10-1 106 107 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

1an2__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）28.26 Å
Rg (electron density)29.11 Å
Total Rg29.35 Å
Atom count2330
Residues216
Excluded volume37923 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1an2__assembly_1__model_1 tetrameric （4） 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 (2)

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6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd1an2a_
Class classa — All alpha proteins
Fold Fold folda.38 — HLH-like
Superfamily Superfamily superfamilya.38.1 — HLH, helix-loop-helix DNA-binding domain
Family Family familya.38.1.1 — HLH, helix-loop-helix DNA-binding domain

CATH v4.4 (1 domains)

Domain ID domain_id1an2A00
Class class4 — Few Secondary Structures
Architecture architecture10 — Irregular
Topology topology280 — MYOD Basic-Helix-Loop-Helix Domain, subunit B
Homologous superfamily homologous superfamily10 — Helix-loop-helix DNA-binding domain
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7. Citations (1)