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2qtj

Solution structure of human dimeric immunoglobulin A

Method: SOLUTION SCATTERING
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1. Protein Identity and Related Structures Protein Identity & Related Structures

Ig alpha-1 chain C region

OrganismNot specified

UniProt P01876

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 4 Kappa light chain IgA1 × 2 Consistent with protein count
2 Protein heterocomplex Heteromer Protein 4 Kappa light chain IgA1 × 2 Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1iga 1ow0 1ow0 2qej 2qtj 2qtj 3chn 6lx3 6lxw 6ue7 6xja 7uvl

18 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name IGHA1_HUMAN
Isoform —
PDB entities 2
Chains and sequence ranges Author chain A； PDBConstruct 1–475； UniProt 1–475 Author chain B； PDBConstruct 1–475； UniProt 1–475 Author chain C； PDBConstruct 1–475； UniProt 1–475 Author chain D； PDBConstruct 1–475； UniProt 1–475

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_id2qtj
Deposition date deposition_date2007-08-02
Structure title titleSolution structure of human dimeric immunoglobulin A
Keywords keywords;X-ray and neutron solution scattering, immunology, antibody, immunoglobulin A1, Chromophore, Glycoprotein, Immunoglobulin C region, Immunoglobulin domain, IMMUNE SYSTEM ;; IMMUNE SYSTEM
Experimental Method methodSOLUTION SCATTERING
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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.

2qtj__assembly_2__model_10

Assembly 2 · Model 10 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

2qtj__assembly_2__model_10 | I(q)

10-2 10-1 106 107 108 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

2qtj__assembly_2__model_10 | 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）60.01 Å
Rg (electron density)59.96 Å
Total Rg59.97 Å
Atom count0
Residues0
Excluded volume180030 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 2qtj__assembly_1__model_1 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 2 2qtj__assembly_1__model_2 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 3 2qtj__assembly_1__model_3 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 4 2qtj__assembly_1__model_4 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 5 2qtj__assembly_1__model_5 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 6 2qtj__assembly_1__model_6 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 7 2qtj__assembly_1__model_7 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 8 2qtj__assembly_1__model_8 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 9 2qtj__assembly_1__model_9 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 10 2qtj__assembly_1__model_10 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 2qtj__assembly_2__model_1 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
2 2 2qtj__assembly_2__model_2 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
2 3 2qtj__assembly_2__model_3 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
2 4 2qtj__assembly_2__model_4 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
2 5 2qtj__assembly_2__model_5 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
2 6 2qtj__assembly_2__model_6 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
2 7 2qtj__assembly_2__model_7 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
2 8 2qtj__assembly_2__model_8 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
2 9 2qtj__assembly_2__model_9 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
2 10 2qtj__assembly_2__model_10 tetrameric （4） 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 (2)

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7. Citations (1)