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1fiu

TETRAMERIC RESTRICTION ENDONUCLEASE NGOMIV IN COMPLEX WITH CLEAVED DNA

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

TYPE II RESTRICTION ENZYME NGOMI

Neisseria gonorrhoeae

UniProt P31032

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Homooligomer Protein 4 DNA 8 ;DNA (5'-D(*TP*GP*CP*G)-3') ; × 4 ;DNA (5'-D(P*CP*CP*GP*GP*CP*GP*C)-3') ; × 4 MAGNESIUM ION × 8 ACETIC ACID × 4 water × 12 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
1fiu 4abt

2 assemblies

View Construct and Data Evidence
UniProt name T2NM_NEIGO
Isoform —
PDB entities 3
Chains and sequence ranges Author chain A； PDBConstruct 1–286； UniProt 1–286 Author chain B； PDBConstruct 1–286； UniProt 1–286 Author chain C； PDBConstruct 1–286； UniProt 1–286 Author chain D； PDBConstruct 1–286； UniProt 1–286

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_id1fiu
Deposition date deposition_date2000-08-07
Structure title titleTETRAMERIC RESTRICTION ENDONUCLEASE NGOMIV IN COMPLEX WITH CLEAVED DNA
Keywords keywords;PROTEIN-DNA COMPLEX, DOUBLE HELIX, RESTRICTION ENDONUCLEASE, RESTRICTION-MODIFICTION SYSTEMS, HYDROLASE, PHOSPHODIESTERASE, METAL ION, COMPLEX (ENDONUCLEASE-DNA), 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.

1fiu__assembly_1__model_1

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

Download this curve (.dat)

1fiu__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.

1fiu__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）31.76 Å
Rg (electron density)30.72 Å
Total Rg31.35 Å
Atom count9868
Residues1188
Excluded volume171720 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1fiu__assembly_1__model_1 dodecameric （12） 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 (6)

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd1fiua_
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.52.1.10 — Restriction endonuclease NgoIV
Domain ID domain_idd1fiub_
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.52.1.10 — Restriction endonuclease NgoIV
Domain ID domain_idd1fiuc_
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.52.1.10 — Restriction endonuclease NgoIV
Domain ID domain_idd1fiud_
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.52.1.10 — Restriction endonuclease NgoIV

CATH v4.4 (4 domains)

Domain ID domain_id1fiuA00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily10010 — Type-2 restriction enzyme NgoMIV
Domain ID domain_id1fiuB00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily10010 — Type-2 restriction enzyme NgoMIV
Domain ID domain_id1fiuC00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily10010 — Type-2 restriction enzyme NgoMIV
Domain ID domain_id1fiuD00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily10010 — Type-2 restriction enzyme NgoMIV
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7. Citations (1)