9c9u

Cryo-EM structure of the C1q A, B-crt, C peptide full assembly

Method: ELECTRON MICROSCOPY
▼

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

Complement C1q subcomponent subunit B

OrganismNot specified

UniProt P02746

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 18 Complement C1q subcomponent subunit A × 6 (P02745) Complement C1q subcomponent subunit C × 6 (P02747) Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name C1QB_HUMAN
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–44; UniProt 28–71 Author chain D; PDBConstruct 1–44; UniProt 28–71 Author chain E; PDBConstruct 1–44; UniProt 28–71 Author chain F; PDBConstruct 1–44; UniProt 28–71 Author chain G; PDBConstruct 1–44; UniProt 28–71 Author chain H; PDBConstruct 1–44; UniProt 28–71

Complement C1q subcomponent subunit A

OrganismNot specified

UniProt P02745

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 18 Complement C1q subcomponent subunit B × 6 (P02746) Complement C1q subcomponent subunit C × 6 (P02747) Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name C1QA_HUMAN
Isoform —
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–37; UniProt 23–60 Author chain I; PDBConstruct 1–37; UniProt 23–60 Author chain J; PDBConstruct 1–37; UniProt 23–60 Author chain K; PDBConstruct 1–37; UniProt 23–60 Author chain L; PDBConstruct 1–37; UniProt 23–60 Author chain M; PDBConstruct 1–37; UniProt 23–60

Complement C1q subcomponent subunit C

OrganismNot specified

UniProt P02747

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 18 Complement C1q subcomponent subunit B × 6 (P02746) Complement C1q subcomponent subunit A × 6 (P02745) Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name C1QC_HUMAN
Isoform —
PDB entities 3
Chains and sequence ranges Author chain C; PDBConstruct 1–35; UniProt 29–63 Author chain N; PDBConstruct 1–35; UniProt 29–63 Author chain O; PDBConstruct 1–35; UniProt 29–63 Author chain P; PDBConstruct 1–35; UniProt 29–63 Author chain Q; PDBConstruct 1–35; UniProt 29–63 Author chain R; PDBConstruct 1–35; UniProt 29–63

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_id9c9u
Deposition date deposition_date2024-06-15
Structure title titleCryo-EM structure of the C1q A, B-crt, C peptide full assembly
Keywords keywordsC1q, complement, collagen, triple helix, cryo-EM, IMMUNE SYSTEM; IMMUNE SYSTEM
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.

9c9u__assembly_1__model_1

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

Download this curve (.dat)

9c9u__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.

9c9u__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)26.12 Å
Rg (electron density)26.09 Å
Total Rg26.86 Å
Atom count3018
Residues360
Excluded volume52806 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 9c9u__assembly_1__model_1 18-meric (18) 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)