← Back to search
2y7h

Atomic model of the DNA-bound methylase complex from the Type I restriction-modification enzyme EcoKI (M2S1). Based on fitting into EM map 1534.

Method: ELECTRON MICROSCOPY
▼

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

TYPE-1 RESTRICTION ENZYME ECOKI SPECIFICITY PROTEIN

OrganismNot specified

UniProt P05719

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 3 DNA 2 TYPE I RESTRICTION ENZYME ECOKI M PROTEIN × 2 （P08957） ;5'-D(*GP*TP*TP*CP*AP*AP*CP*GP*TP*CP*GP*AP*CP*GP *TP*GP*CP*AP*AP*C)-3' ; × 1 ;5'-D(*GP*TP*TP*GP*CP*AP*CP*GP*TP*CP*GP*AP*CP*GP *TP*TP*GP*AP*AP*C)-3' ; × 1 S-ADENOSYLMETHIONINE × 2 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
2y7c 2y7h

2 assemblies

View Construct and Data Evidence
UniProt name T1SK_ECOLI
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–464； UniProt 1–464

TYPE I RESTRICTION ENZYME ECOKI M PROTEIN

OrganismNot specified

UniProt P08957

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 3 DNA 2 TYPE-1 RESTRICTION ENZYME ECOKI SPECIFICITY PROTEIN × 1 （P05719） ;5'-D(*GP*TP*TP*CP*AP*AP*CP*GP*TP*CP*GP*AP*CP*GP *TP*GP*CP*AP*AP*C)-3' ; × 1 ;5'-D(*GP*TP*TP*GP*CP*AP*CP*GP*TP*CP*GP*AP*CP*GP *TP*TP*GP*AP*AP*C)-3' ; × 1 S-ADENOSYLMETHIONINE × 2 Consistent with all polymers

Other States of the Same Protein in the Database

Monomer
2ar0 2ar0

2 assemblies

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
2y7c 2y7h

2 assemblies

View Construct and Data Evidence
UniProt name T1MK_ECOLI
Isoform —
PDB entities 2
Chains and sequence ranges Author chain B； PDBConstruct 1–529； UniProt 1–529 Author chain C； PDBConstruct 1–529； UniProt 1–529

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.

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id2y7h
Deposition date deposition_date2011-01-31
Structure title titleAtomic model of the DNA-bound methylase complex from the Type I restriction-modification enzyme EcoKI (M2S1). Based on fitting into EM map 1534.
Keywords keywordsTRANSFERASE-DNA COMPLEX; TRANSFERASE/DNA
Experimental Method methodELECTRON MICROSCOPY
▼

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.

2y7h__assembly_1__model_1

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

Download this curve (.dat)

2y7h__assembly_1__model_1 | I(q)

10-2 10-1 106 107 108 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

2y7h__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）37.87 Å
Rg (electron density)37.62 Å
Total Rg37.99 Å
Atom count12846
Residues1562
Excluded volume224700 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 2y7h__assembly_1__model_1 pentameric （5） Success 4.1.3-1-20251215 (887e7ef) View Download
▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (5)

▶

7. Citations (1)