9i2b

SPIN90-Arp2/3 nucleated bidirectional actin filaments

Method: ELECTRON MICROSCOPY
▼

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

Actin-related protein 2

Homo sapiens

UniProt P61160

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 24 Actin-related protein 2/3 complex subunit 2 × 2 (O15144) Actin-related protein 2/3 complex subunit 3 × 2 (O15145) Actin-related protein 2/3 complex subunit 4 × 2 (P59998) Actin-related protein 2/3 complex subunit 5-like protein × 2 (Q9BPX5) Actin, cytoplasmic 1 × 4 (Q6QAQ1) Phalloidin × 4 NCK-interacting protein with SH3 domain × 2 (Q9NZQ3) Actin-related protein 2/3 complex subunit 1B × 2 (O15143) Actin-related protein 3 × 2 (P61158) ADENOSINE-5'-DIPHOSPHATE × 8 MAGNESIUM ION × 8 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name ARP2_HUMAN
Isoform —
PDB entities 1
Chains and sequence ranges Author chain B; PDBConstruct 1–394; UniProt 1–394 Author chain L; PDBConstruct 1–394; UniProt 1–394

Actin-related protein 2/3 complex subunit 2

Homo sapiens

UniProt O15144

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 24 Actin-related protein 2 × 2 (P61160) Actin-related protein 2/3 complex subunit 3 × 2 (O15145) Actin-related protein 2/3 complex subunit 4 × 2 (P59998) Actin-related protein 2/3 complex subunit 5-like protein × 2 (Q9BPX5) Actin, cytoplasmic 1 × 4 (Q6QAQ1) Phalloidin × 4 NCK-interacting protein with SH3 domain × 2 (Q9NZQ3) Actin-related protein 2/3 complex subunit 1B × 2 (O15143) Actin-related protein 3 × 2 (P61158) ADENOSINE-5'-DIPHOSPHATE × 8 MAGNESIUM ION × 8 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name ARPC2_HUMAN
Isoform —
PDB entities 2
Chains and sequence ranges Author chain D; PDBConstruct 1–300; UniProt 1–300 Author chain N; PDBConstruct 1–300; UniProt 1–300

Actin-related protein 2/3 complex subunit 3

Homo sapiens

UniProt O15145

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 24 Actin-related protein 2 × 2 (P61160) Actin-related protein 2/3 complex subunit 2 × 2 (O15144) Actin-related protein 2/3 complex subunit 4 × 2 (P59998) Actin-related protein 2/3 complex subunit 5-like protein × 2 (Q9BPX5) Actin, cytoplasmic 1 × 4 (Q6QAQ1) Phalloidin × 4 NCK-interacting protein with SH3 domain × 2 (Q9NZQ3) Actin-related protein 2/3 complex subunit 1B × 2 (O15143) Actin-related protein 3 × 2 (P61158) ADENOSINE-5'-DIPHOSPHATE × 8 MAGNESIUM ION × 8 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name ARPC3_HUMAN
Isoform —
PDB entities 3
Chains and sequence ranges Author chain E; PDBConstruct 1–178; UniProt 1–178 Author chain O; PDBConstruct 1–178; UniProt 1–178

Actin-related protein 2/3 complex subunit 4

Homo sapiens

UniProt P59998

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 24 Actin-related protein 2 × 2 (P61160) Actin-related protein 2/3 complex subunit 2 × 2 (O15144) Actin-related protein 2/3 complex subunit 3 × 2 (O15145) Actin-related protein 2/3 complex subunit 5-like protein × 2 (Q9BPX5) Actin, cytoplasmic 1 × 4 (Q6QAQ1) Phalloidin × 4 NCK-interacting protein with SH3 domain × 2 (Q9NZQ3) Actin-related protein 2/3 complex subunit 1B × 2 (O15143) Actin-related protein 3 × 2 (P61158) ADENOSINE-5'-DIPHOSPHATE × 8 MAGNESIUM ION × 8 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name ARPC4_HUMAN
Isoform —
PDB entities 4
Chains and sequence ranges Author chain F; PDBConstruct 1–168; UniProt 1–168 Author chain P; PDBConstruct 1–168; UniProt 1–168

Actin-related protein 2/3 complex subunit 5-like protein

Homo sapiens

UniProt Q9BPX5

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 24 Actin-related protein 2 × 2 (P61160) Actin-related protein 2/3 complex subunit 2 × 2 (O15144) Actin-related protein 2/3 complex subunit 3 × 2 (O15145) Actin-related protein 2/3 complex subunit 4 × 2 (P59998) Actin, cytoplasmic 1 × 4 (Q6QAQ1) Phalloidin × 4 NCK-interacting protein with SH3 domain × 2 (Q9NZQ3) Actin-related protein 2/3 complex subunit 1B × 2 (O15143) Actin-related protein 3 × 2 (P61158) ADENOSINE-5'-DIPHOSPHATE × 8 MAGNESIUM ION × 8 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name ARP5L_HUMAN
Isoform —
PDB entities 5
Chains and sequence ranges Author chain G; PDBConstruct 1–153; UniProt 1–153 Author chain Q; PDBConstruct 1–153; UniProt 1–153

Actin, cytoplasmic 1

OrganismNot specified

UniProt Q6QAQ1

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 24 Actin-related protein 2 × 2 (P61160) Actin-related protein 2/3 complex subunit 2 × 2 (O15144) Actin-related protein 2/3 complex subunit 3 × 2 (O15145) Actin-related protein 2/3 complex subunit 4 × 2 (P59998) Actin-related protein 2/3 complex subunit 5-like protein × 2 (Q9BPX5) Phalloidin × 4 NCK-interacting protein with SH3 domain × 2 (Q9NZQ3) Actin-related protein 2/3 complex subunit 1B × 2 (O15143) Actin-related protein 3 × 2 (P61158) ADENOSINE-5'-DIPHOSPHATE × 8 MAGNESIUM ION × 8 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name ACTB_PIG
Isoform —
PDB entities 6
Chains and sequence ranges Author chain I; PDBConstruct 1–375; UniProt 1–375 Author chain J; PDBConstruct 1–375; UniProt 1–375 Author chain S; PDBConstruct 1–375; UniProt 1–375 Author chain T; PDBConstruct 1–375; UniProt 1–375

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 24 Actin-related protein 2 × 2 (P61160) Actin-related protein 2/3 complex subunit 2 × 2 (O15144) Actin-related protein 2/3 complex subunit 3 × 2 (O15145) Actin-related protein 2/3 complex subunit 4 × 2 (P59998) Actin-related protein 2/3 complex subunit 5-like protein × 2 (Q9BPX5) Actin, cytoplasmic 1 × 4 (Q6QAQ1) Phalloidin × 4 Actin-related protein 2/3 complex subunit 1B × 2 (O15143) Actin-related protein 3 × 2 (P61158) ADENOSINE-5'-DIPHOSPHATE × 8 MAGNESIUM ION × 8 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 1–722; UniProt 1–722 Author chain R; PDBConstruct 1–722; UniProt 1–722

Actin-related protein 2/3 complex subunit 1B

Homo sapiens

UniProt O15143

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 24 Actin-related protein 2 × 2 (P61160) Actin-related protein 2/3 complex subunit 2 × 2 (O15144) Actin-related protein 2/3 complex subunit 3 × 2 (O15145) Actin-related protein 2/3 complex subunit 4 × 2 (P59998) Actin-related protein 2/3 complex subunit 5-like protein × 2 (Q9BPX5) Actin, cytoplasmic 1 × 4 (Q6QAQ1) Phalloidin × 4 NCK-interacting protein with SH3 domain × 2 (Q9NZQ3) Actin-related protein 3 × 2 (P61158) ADENOSINE-5'-DIPHOSPHATE × 8 MAGNESIUM ION × 8 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name ARC1B_HUMAN
Isoform —
PDB entities 9
Chains and sequence ranges Author chain C; PDBConstruct 1–372; UniProt 1–372 Author chain M; PDBConstruct 1–372; UniProt 1–372

Actin-related protein 3

Homo sapiens

UniProt P61158

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 24 Actin-related protein 2 × 2 (P61160) Actin-related protein 2/3 complex subunit 2 × 2 (O15144) Actin-related protein 2/3 complex subunit 3 × 2 (O15145) Actin-related protein 2/3 complex subunit 4 × 2 (P59998) Actin-related protein 2/3 complex subunit 5-like protein × 2 (Q9BPX5) Actin, cytoplasmic 1 × 4 (Q6QAQ1) Phalloidin × 4 NCK-interacting protein with SH3 domain × 2 (Q9NZQ3) Actin-related protein 2/3 complex subunit 1B × 2 (O15143) ADENOSINE-5'-DIPHOSPHATE × 8 MAGNESIUM ION × 8 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name ARP3_HUMAN
Isoform —
PDB entities 10
Chains and sequence ranges Author chain A; PDBConstruct 1–418; UniProt 1–418 Author chain K; PDBConstruct 1–418; UniProt 1–418

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_id9i2b
Deposition date deposition_date2025-01-20
Structure title titleSPIN90-Arp2/3 nucleated bidirectional actin filaments
Keywords keywordsCytoskeleton, Branched actin network, CYTOSOLIC PROTEIN; CYTOSOLIC PROTEIN
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.

9i2b__assembly_1__model_1

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

Download this curve (.dat)

9i2b__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.

9i2b__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)74.67 Å
Rg (electron density)75.22 Å
Total Rg75.19 Å
Atom count97342
Residues6144
Excluded volume871880 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 9i2b__assembly_1__model_1 24-meric (24) Success 4.1.3-1-20251215 (887e7ef) View Download
▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (12)

▶

7. Citations (1)