← Back to search
4c3g

cryo-EM structure of activated and oligomeric restriction endonuclease SgrAI

Method: ELECTRON MICROSCOPY
▼

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

SGRAIR RESTRICTION ENZYME

STREPTOMYCES GRISEUS

UniProt Q9F6L0

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Homooligomer Protein 2 DNA 4 ;5'-D(*GP*AP*TP*GP*CP*GP*TP*GP*GP*GP*TP*CP*TP*TP *CP*AP*CP*AP)-3' ; × 2 ;5'-D(*CP*CP*GP*GP*TP*GP*TP*GP*AP*AP*GP*AP*CP*CP *CP*AP*CP*GP*CP*AP*TP*CP)-3' ; × 2 Consistent with all polymers

Other States of the Same Protein in the Database

Monomer

None

Homodimer
7s8d

1 assemblies

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
3dpg 3dvo 3dvo 3dw9 3mq6 3mq6 3mq6 3mq6 3mqy 3n78 3n7b 4c3g

17 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name Q9F6L0_STRGR
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–337； UniProt 2–338 Author chain B； PDBConstruct 1–337； UniProt 2–338

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_id4c3g
Deposition date deposition_date2013-08-23
Structure title titlecryo-EM structure of activated and oligomeric restriction endonuclease SgrAI
Keywords keywordsHYDROLASE, RESTRICTION ENDONUCLEASE, ALLOSTERY, DNA CLEAVAGE, PARASITE-HOST INTERACTION; HYDROLASE
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.

4c3g__assembly_1__model_1

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

Download this curve (.dat)

4c3g__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.

4c3g__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）32.46 Å
Rg (electron density)31.12 Å
Total Rg29.25 Å
Atom count868
Residues80
Excluded volume106140 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 4c3g__assembly_1__model_1 hexameric （6） Success 4.1.3-1-20251215 (887e7ef) View Download
▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (3)

▶

7. Citations (1)