3qf6

Neutron structure of type-III Antifreeze Protein allows the reconstruction of AFP-ice interface

Method: NEUTRON DIFFRACTION
▼

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

Type-3 ice-structuring protein HPLC 12

Macrozoarces americanus

UniProt P19614

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein monomer Monomer Protein 1 water × 1 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name ANP12_MACAM
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–66; UniProt 1–66

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_id3qf6
Deposition date deposition_date2011-01-21
Structure title titleNeutron structure of type-III Antifreeze Protein allows the reconstruction of AFP-ice interface
Keywords keywordsIce Binding Protein, ANTIFREEZE PROTEIN; ANTIFREEZE PROTEIN
Experimental Method methodNEUTRON 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.

3qf6__assembly_1__model_1

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

Download this curve (.dat)

3qf6__assembly_1__model_1 | I(q)

10-2 10-1 104 105 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

3qf6__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)13.92 Å
Rg (electron density)11.10 Å
Total Rg13.04 Å
Atom count1182
Residues65
Excluded volume12880 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 3qf6__assembly_1__model_1 monomeric (1) Success 4.1.3-1-20251215 (887e7ef) View Download
▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (2)

▼

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd3qf6a_
Class classb — All beta proteins
Fold Fold foldb.85 — beta-clip
Superfamily Superfamily superfamilyb.85.1 — AFP III-like domain
Family Family familyb.85.1.1 — AFP III-like domain

CATH v4.4 (1 domains)

Domain ID domain_id3qf6A00
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology1210 — Type Iii Antifreeze Protein Isoform Hplc 12
Homologous superfamily homologous superfamily10 — Antifreeze-like/N-acetylneuraminic acid synthase C-terminal domain
▶

7. Citations (1)