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2aor

Crystal structure of MutH-hemimethylated DNA complex

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

DNA mismatch repair protein mutH

Haemophilus influenzae

UniProt P44688

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 5'-D(*CP*AP*GP*GP*(6MA)P*TP*CP*CP*AP*AP*GP*CP*TP*TP*GP*GP*AP*TP*CP*CP*TP*G)-3' × 2 CALCIUM ION × 4 water × 4 Consistent with all polymers

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
2aoq 2aor

2 assemblies

View Construct and Data Evidence
UniProt name MUTH_HAEIN
Isoform —
PDB entities 2
Chains and sequence ranges Author chain A； PDBConstruct 1–223； UniProt 1–223 Author chain B； PDBConstruct 1–223； UniProt 1–223

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_id2aor
Deposition date deposition_date2005-08-13
Structure title titleCrystal structure of MutH-hemimethylated DNA complex
Keywords keywordsGATC recognition, HYDROLASE-DNA COMPLEX; HYDROLASE/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.

2aor__assembly_1__model_1

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

Download this curve (.dat)

2aor__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.

2aor__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）27.61 Å
Rg (electron density)27.46 Å
Total Rg27.99 Å
Atom count4369
Residues483
Excluded volume75625 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 2aor__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 (4)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd2aora_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.52 — Restriction endonuclease-like
Superfamily Superfamily superfamilyc.52.1 — Restriction endonuclease-like
Family Family familyc.52.1.14 — DNA mismatch repair protein MutH from
Domain ID domain_idd2aorb_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.52 — Restriction endonuclease-like
Superfamily Superfamily superfamilyc.52.1 — Restriction endonuclease-like
Family Family familyc.52.1.14 — DNA mismatch repair protein MutH from

CATH v4.4 (2 domains)

Domain ID domain_id2aorA00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology600 — ECO RV Endonuclease; Chain A
Homologous superfamily homologous superfamily10 — DNA mismatch repair MutH/Restriction endonuclease, type II
Domain ID domain_id2aorB00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology600 — ECO RV Endonuclease; Chain A
Homologous superfamily homologous superfamily10 — DNA mismatch repair MutH/Restriction endonuclease, type II
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7. Citations (1)