Biological Assembly 1  

 3D View: Structure | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 9-mer - A2B1C1D1E1F1G1H1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 336.62 kDa 
• Atom Count: 14680 
• Residue Count: 1940 
• Unique protein chains: 8

6UHC

CryoEM structure of human Arp2/3 complex with bound NPFs

• DOI: 10.2210/pdb6UHC/pdb
• EMDataResource: EMD-20770

• Classification: CONTRACTILE PROTEIN
• Organism(s): Homo sapiens, Mus musculus
• Expression System: Spodoptera aff. frugiperda 1 BOLD-2017, Escherichia coli
• Mutation(s): No 


• Deposited: 2019-09-27 Released: 2020-07-01 
• Deposition Author(s): Zimmet, A., van Eeuwen, T., Dominguez, R.
• Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS), National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.90 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Cryo-EM structure of NPF-bound human Arp2/3 complex and activation mechanism.

Zimmet, A., Van Eeuwen, T., Boczkowska, M., Rebowski, G., Murakami, K., Dominguez, R.

(2020) Sci Adv 6: eaaz7651-eaaz7651

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Actin-related protein 3	A	418	Homo sapiens	Mutation(s): 0  Gene Names: ACTR3, ARP3
Find proteins for P61158 (Homo sapiens) Explore P61158  Go to UniProtKB:  P61158
NIH Common Fund Data Resources
PHAROS:  P61158 GTEx:  ENSG00000115091

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Actin-related protein 2	B	394	Homo sapiens	Mutation(s): 0  Gene Names: ACTR2, ARP2
Find proteins for P61160 (Homo sapiens) Explore P61160  Go to UniProtKB:  P61160
NIH Common Fund Data Resources
PHAROS:  P61160 GTEx:  ENSG00000138071

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Actin-related protein 2/3 complex subunit 1B	C	372	Homo sapiens	Mutation(s): 0  Gene Names: ARPC1B, ARC41
Find proteins for O15143 (Homo sapiens) Explore O15143  Go to UniProtKB:  O15143
NIH Common Fund Data Resources
PHAROS:  O15143 GTEx:  ENSG00000130429

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Actin-related protein 2/3 complex subunit 2	D	300	Homo sapiens	Mutation(s): 0  Gene Names: ARPC2, ARC34, PRO2446
Find proteins for O15144 (Homo sapiens) Explore O15144  Go to UniProtKB:  O15144
NIH Common Fund Data Resources
PHAROS:  O15144 GTEx:  ENSG00000163466

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
Actin-related protein 2/3 complex subunit 3	E	203	Homo sapiens	Mutation(s): 0  Gene Names: ARPC3, ARC21
Find proteins for O15145 (Homo sapiens) Explore O15145  Go to UniProtKB:  O15145
NIH Common Fund Data Resources
PHAROS:  O15145 GTEx:  ENSG00000111229

Entity ID: 6
Molecule	Chains	Sequence Length	Organism	Details	Image
Actin-related protein 2/3 complex subunit 4	F	168	Homo sapiens	Mutation(s): 0  Gene Names: ARPC4, ARC20
Find proteins for P59998 (Homo sapiens) Explore P59998  Go to UniProtKB:  P59998
NIH Common Fund Data Resources
PHAROS:  P59998 GTEx:  ENSG00000241553

Entity ID: 7
Molecule	Chains	Sequence Length	Organism	Details	Image
Actin-related protein 2/3 complex subunit 5	G	151	Homo sapiens	Mutation(s): 0  Gene Names: ARPC5, ARC16
Find proteins for O15511 (Homo sapiens) Explore O15511  Go to UniProtKB:  O15511
NIH Common Fund Data Resources
PHAROS:  O15511 GTEx:  ENSG00000162704

Entity ID: 8
Molecule	Chains	Sequence Length	Organism	Details	Image
Neural Wiskott-Aldrich syndrome protein	H, I	501	Mus musculus	Mutation(s): 0  Gene Names: Wasl
Find proteins for Q91YD9 (Mus musculus) Explore Q91YD9  Go to UniProtKB:  Q91YD9

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ATP	A, B	ADENOSINE-5'-TRIPHOSPHATE C10 H16 N5 O13 P3 ZKHQWZAMYRWXGA-KQYNXXCUSA-N
MG	A, B	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.90 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Deposited Date: 2019-09-27 
• Released Date: 2020-07-01 
Deposition Author(s): Zimmet, A., van Eeuwen, T., Dominguez, R.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	R01-GM07391
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	T32-GM008275
National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI)	United States	F31-HL146077

Revision History 

• Version 1.0: 2020-07-01
  Type: Initial release