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12gb

High Resolution Structure of Monomorphic AB1-40 Fibrils

Method: SOLID-STATE NMR
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1. Protein Identity and Related Structures Protein Identity & Related Structures

Type IIIb beta-amyloid 40 Filament

Homo sapiens

UniProt P05067

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein homooligomer Homooligomer Protein 20 No other associated polymer Consistent with protein count

Other States of the Same Protein in the Database

Monomer
1amb 1amc 1aml 1ba4 1ba6 1bjb 1bjc 1hz3 1iyt 1mwp 1owt 1qcm

64 assemblies; showing the first 12

Homodimer
1aap 2loh 2lz3 2lz4 2mgt 2y3k 2y3k 2y3k 2y3k 3ktm 3ktm 3ktm

18 assemblies; showing the first 12

Homotetramer
2y3j 2y3j 2y3l 3ovj 6rhy 6wxm 6wxm

7 assemblies

Other homooligomers
11en 11eo 11ep 12gb 21fb 2beg 2lmn 2lmo 2lmp 2lmq 2lnq 2m4j

99 assemblies; showing the first 12

Heteromeric or nucleic-acid complex
1brc 1ca0 1ca0 1taw 1x11 1x11 1x11 1zjd 2otk 2r0w 2wk3 2wk3

95 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name A4_HUMAN
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–40； UniProt 672–711 Author chain B； PDBConstruct 1–40； UniProt 672–711 Author chain C； PDBConstruct 1–40； UniProt 672–711 Author chain D； PDBConstruct 1–40； UniProt 672–711 Author chain E； PDBConstruct 1–40； UniProt 672–711 Author chain F； PDBConstruct 1–40； UniProt 672–711 Author chain G； PDBConstruct 1–40； UniProt 672–711 Author chain H； PDBConstruct 1–40； UniProt 672–711 Author chain I； PDBConstruct 1–40； UniProt 672–711 Author chain J； PDBConstruct 1–40； UniProt 672–711 Author chain K； PDBConstruct 1–40； UniProt 672–711 Author chain L； PDBConstruct 1–40； UniProt 672–711 Author chain M； PDBConstruct 1–40； UniProt 672–711 Author chain N； PDBConstruct 1–40； UniProt 672–711 Author chain O； PDBConstruct 1–40； UniProt 672–711 Author chain P； PDBConstruct 1–40； UniProt 672–711 Author chain Q； PDBConstruct 1–40； UniProt 672–711 Author chain R； PDBConstruct 1–40； UniProt 672–711 Author chain S； PDBConstruct 1–40； UniProt 672–711 Author chain T； PDBConstruct 1–40； UniProt 672–711

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_id12gb
Deposition date deposition_date2026-04-03
Last revision last_revision2026-04-15
Structure title titleHigh Resolution Structure of Monomorphic AB1-40 Fibrils
Keywords keywordsamyloid-beta, protein fibril, parallel in-register, cross-beta; PROTEIN FIBRIL
Experimental Method methodSOLID-STATE NMR
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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.

12gb__assembly_1__model_1

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

Download this curve (.dat)

12gb__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.

12gb__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）24.65 Å
Rg (electron density)23.32 Å
Total Rg24.11 Å
Atom count9340
Residues620
Excluded volume84124 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 12gb__assembly_1__model_1 20-meric （20） Success 4.1.3-1-20251215 (887e7ef) View Download
1 2 12gb__assembly_1__model_2 20-meric （20） Success 4.1.3-1-20251215 (887e7ef) View Download
1 3 12gb__assembly_1__model_3 20-meric （20） Success 4.1.3-1-20251215 (887e7ef) View Download
1 4 12gb__assembly_1__model_4 20-meric （20） Success 4.1.3-1-20251215 (887e7ef) View Download
1 5 12gb__assembly_1__model_5 20-meric （20） Success 4.1.3-1-20251215 (887e7ef) View Download
1 6 12gb__assembly_1__model_6 20-meric （20） Success 4.1.3-1-20251215 (887e7ef) View Download
1 7 12gb__assembly_1__model_7 20-meric （20） Success 4.1.3-1-20251215 (887e7ef) View Download
1 8 12gb__assembly_1__model_8 20-meric （20） Success 4.1.3-1-20251215 (887e7ef) View Download
1 9 12gb__assembly_1__model_9 20-meric （20） Success 4.1.3-1-20251215 (887e7ef) View Download
1 10 12gb__assembly_1__model_10 20-meric （20） 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 (1)

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7. Citations (1)