← Back to search
7xm0

Crystal structure of Sau3AI-C and DNA substrate complex

Method: X-RAY DIFFRACTION
▼

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

Type II restriction enzyme Sau3AI

Staphylococcus aureus

UniProt P16667

State in the Current Structure

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

Other States of the Same Protein in the Database

Monomer
2reu 4pxg 4pxg

3 assemblies

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
7xm0 7xm0 7xm0

3 assemblies

View Construct and Data Evidence
UniProt name T2S3_STAAU
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 22–278； UniProt 233–489 Author chain B； PDBConstruct 22–278； UniProt 233–489 Author chain C； PDBConstruct 22–278； UniProt 233–489

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_id7xm0
Deposition date deposition_date2022-04-23
Structure title titleCrystal structure of Sau3AI-C and DNA substrate complex
Keywords keywordsSau3AI, restriction endonuclease, Protein-DNA complex, enzyme mechanism, DNA BINDING PROTEIN, DNA BINDING PROTEIN-DNA complex; DNA BINDING PROTEIN/DNA
Experimental Method methodX-RAY DIFFRACTION
▼

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.

7xm0__assembly_1__model_1

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

Download this curve (.dat)

7xm0__assembly_1__model_1 | I(q)

10-2 10-1 105 106 107 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

7xm0__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）20.78 Å
Rg (electron density)20.24 Å
Total Rg21.09 Å
Atom count2548
Residues278
Excluded volume44020 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 7xm0__assembly_1__model_1 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 7xm0__assembly_2__model_1 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
3 1 7xm0__assembly_3__model_1 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (4)

▶

7. Citations (1)