9m5e

Structure of SPIN90 dimer-Arp2/3 complex-nucleated actin filament (singlet complex)

Method: ELECTRON MICROSCOPY
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1. Protein Identity and Related Structures Protein Identity & Related Structures

Actin-related protein 3

OrganismNot specified

UniProt P61157

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 12 Actin-related protein 2 × 1 (A7MB62) Actin-related protein 2/3 complex subunit 1B × 1 (Q58CQ2) Actin-related protein 2/3 complex subunit 2 × 1 (Q3MHR7) Actin-related protein 2/3 complex subunit 3 × 1 (Q3T035) Actin-related protein 2/3 complex subunit 4 × 1 (Q148J6) Actin-related protein 2/3 complex subunit 5 × 1 (Q3SYX9) NCK-interacting protein with SH3 domain × 2 (Q9NZQ3) Actin, alpha skeletal muscle × 3 (P68139) MAGNESIUM ION × 4 ADENOSINE-5'-DIPHOSPHATE × 5 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name ARP3_BOVIN
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–418; UniProt 1–418

Actin-related protein 2

OrganismNot specified

UniProt A7MB62

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 12 Actin-related protein 3 × 1 (P61157) Actin-related protein 2/3 complex subunit 1B × 1 (Q58CQ2) Actin-related protein 2/3 complex subunit 2 × 1 (Q3MHR7) Actin-related protein 2/3 complex subunit 3 × 1 (Q3T035) Actin-related protein 2/3 complex subunit 4 × 1 (Q148J6) Actin-related protein 2/3 complex subunit 5 × 1 (Q3SYX9) NCK-interacting protein with SH3 domain × 2 (Q9NZQ3) Actin, alpha skeletal muscle × 3 (P68139) MAGNESIUM ION × 4 ADENOSINE-5'-DIPHOSPHATE × 5 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name ARP2_BOVIN
Isoform —
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–394; UniProt 1–394

Actin-related protein 2/3 complex subunit 1B

OrganismNot specified

UniProt Q58CQ2

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 12 Actin-related protein 3 × 1 (P61157) Actin-related protein 2 × 1 (A7MB62) Actin-related protein 2/3 complex subunit 2 × 1 (Q3MHR7) Actin-related protein 2/3 complex subunit 3 × 1 (Q3T035) Actin-related protein 2/3 complex subunit 4 × 1 (Q148J6) Actin-related protein 2/3 complex subunit 5 × 1 (Q3SYX9) NCK-interacting protein with SH3 domain × 2 (Q9NZQ3) Actin, alpha skeletal muscle × 3 (P68139) MAGNESIUM ION × 4 ADENOSINE-5'-DIPHOSPHATE × 5 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name ARC1B_BOVIN
Isoform —
PDB entities 3
Chains and sequence ranges Author chain C; PDBConstruct 1–372; UniProt 1–372

Actin-related protein 2/3 complex subunit 2

OrganismNot specified

UniProt Q3MHR7

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 12 Actin-related protein 3 × 1 (P61157) Actin-related protein 2 × 1 (A7MB62) Actin-related protein 2/3 complex subunit 1B × 1 (Q58CQ2) Actin-related protein 2/3 complex subunit 3 × 1 (Q3T035) Actin-related protein 2/3 complex subunit 4 × 1 (Q148J6) Actin-related protein 2/3 complex subunit 5 × 1 (Q3SYX9) NCK-interacting protein with SH3 domain × 2 (Q9NZQ3) Actin, alpha skeletal muscle × 3 (P68139) MAGNESIUM ION × 4 ADENOSINE-5'-DIPHOSPHATE × 5 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name ARPC2_BOVIN
Isoform —
PDB entities 4
Chains and sequence ranges Author chain D; PDBConstruct 1–300; UniProt 1–300

Actin-related protein 2/3 complex subunit 3

OrganismNot specified

UniProt Q3T035

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 12 Actin-related protein 3 × 1 (P61157) Actin-related protein 2 × 1 (A7MB62) Actin-related protein 2/3 complex subunit 1B × 1 (Q58CQ2) Actin-related protein 2/3 complex subunit 2 × 1 (Q3MHR7) Actin-related protein 2/3 complex subunit 4 × 1 (Q148J6) Actin-related protein 2/3 complex subunit 5 × 1 (Q3SYX9) NCK-interacting protein with SH3 domain × 2 (Q9NZQ3) Actin, alpha skeletal muscle × 3 (P68139) MAGNESIUM ION × 4 ADENOSINE-5'-DIPHOSPHATE × 5 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name ARPC3_BOVIN
Isoform —
PDB entities 5
Chains and sequence ranges Author chain E; PDBConstruct 1–178; UniProt 1–178

Actin-related protein 2/3 complex subunit 4

OrganismNot specified

UniProt Q148J6

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 12 Actin-related protein 3 × 1 (P61157) Actin-related protein 2 × 1 (A7MB62) Actin-related protein 2/3 complex subunit 1B × 1 (Q58CQ2) Actin-related protein 2/3 complex subunit 2 × 1 (Q3MHR7) Actin-related protein 2/3 complex subunit 3 × 1 (Q3T035) Actin-related protein 2/3 complex subunit 5 × 1 (Q3SYX9) NCK-interacting protein with SH3 domain × 2 (Q9NZQ3) Actin, alpha skeletal muscle × 3 (P68139) MAGNESIUM ION × 4 ADENOSINE-5'-DIPHOSPHATE × 5 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name ARPC4_BOVIN
Isoform —
PDB entities 6
Chains and sequence ranges Author chain F; PDBConstruct 1–168; UniProt 1–168

Actin-related protein 2/3 complex subunit 5

OrganismNot specified

UniProt Q3SYX9

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 12 Actin-related protein 3 × 1 (P61157) Actin-related protein 2 × 1 (A7MB62) Actin-related protein 2/3 complex subunit 1B × 1 (Q58CQ2) Actin-related protein 2/3 complex subunit 2 × 1 (Q3MHR7) Actin-related protein 2/3 complex subunit 3 × 1 (Q3T035) Actin-related protein 2/3 complex subunit 4 × 1 (Q148J6) NCK-interacting protein with SH3 domain × 2 (Q9NZQ3) Actin, alpha skeletal muscle × 3 (P68139) MAGNESIUM ION × 4 ADENOSINE-5'-DIPHOSPHATE × 5 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name ARPC5_BOVIN
Isoform —
PDB entities 7
Chains and sequence ranges Author chain G; PDBConstruct 1–151; UniProt 1–151

NCK-interacting protein with SH3 domain

Homo sapiens

UniProt Q9NZQ3

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 12 Actin-related protein 3 × 1 (P61157) Actin-related protein 2 × 1 (A7MB62) Actin-related protein 2/3 complex subunit 1B × 1 (Q58CQ2) Actin-related protein 2/3 complex subunit 2 × 1 (Q3MHR7) Actin-related protein 2/3 complex subunit 3 × 1 (Q3T035) Actin-related protein 2/3 complex subunit 4 × 1 (Q148J6) Actin-related protein 2/3 complex subunit 5 × 1 (Q3SYX9) Actin, alpha skeletal muscle × 3 (P68139) MAGNESIUM ION × 4 ADENOSINE-5'-DIPHOSPHATE × 5 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name SPN90_HUMAN
Isoform —
PDB entities 8
Chains and sequence ranges Author chain H; PDBConstruct 1–454; UniProt 269–722 Author chain h; PDBConstruct 1–454; UniProt 269–722

Actin, alpha skeletal muscle

OrganismNot specified

UniProt P68139

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 12 Actin-related protein 3 × 1 (P61157) Actin-related protein 2 × 1 (A7MB62) Actin-related protein 2/3 complex subunit 1B × 1 (Q58CQ2) Actin-related protein 2/3 complex subunit 2 × 1 (Q3MHR7) Actin-related protein 2/3 complex subunit 3 × 1 (Q3T035) Actin-related protein 2/3 complex subunit 4 × 1 (Q148J6) Actin-related protein 2/3 complex subunit 5 × 1 (Q3SYX9) NCK-interacting protein with SH3 domain × 2 (Q9NZQ3) MAGNESIUM ION × 4 ADENOSINE-5'-DIPHOSPHATE × 5 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name ACTS_CHICK
Isoform —
PDB entities 9
Chains and sequence ranges Author chain I; PDBConstruct 1–377; UniProt 1–377 Author chain J; PDBConstruct 1–377; UniProt 1–377 Author chain K; PDBConstruct 1–377; UniProt 1–377

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_id9m5e
Deposition date deposition_date2025-03-05
Structure title titleStructure of SPIN90 dimer-Arp2/3 complex-nucleated actin filament (singlet complex)
Keywords keywordsSPIN90, actin, cytoskeleton, Arp2-3 complex, Nucleation Promoting Factor, CYTOSOLIC PROTEIN; CYTOSOLIC PROTEIN
Experimental Method methodELECTRON MICROSCOPY
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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.

9m5e__assembly_1__model_1

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

Download this curve (.dat)

9m5e__assembly_1__model_1 | I(q)

10-2 10-1 106 107 108 109 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

9m5e__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)58.87 Å
Rg (electron density)59.24 Å
Total Rg59.30 Å
Atom count29669
Residues3783
Excluded volume529650 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 9m5e__assembly_1__model_1 12-meric (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 (11)

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7. Citations (1)