Protein Domain : IPR015623

Type:  Family Name:  Actin-related protein 3
Description:  Actin-related proteins are defined broadly as proteins that have significant (30-60%) amino acid identity to conventional actin. Ten members, named Arp1-Arp10, have been identified in budding yeast [] and play diverse roles in the cell, ranging from the regulation of actin to chromatin remodeling. Actin and Arps are part of a large, ancient family of ATPases that include heat shock proteins and sugar kinases.Actin-related protein 3 (Arp3) shares about 35-40% amino acid identity with conventional actin []. Arp3 is only found in the cell as a member of a 7-subunit complex, known as the Arp2/3 complex. The Arp2/3 complex is composed of Arp3, Arp2 and five novel proteins: p40 (ARPC1), p35 (ARPC2), p19 (ARPC3), p18 (ARPC4), and p14 (ARPC5). The Arp2/3 complex has been found in all eukaryotes and is highly conserved across species.Arp2/3 binds to pre-existing actin filaments and nucleates new daughter filaments, and thus becomes incorporated into the dynamic actin network at the leading edge of motile cells and other actin-based protrusive structures []. In order to nucleate filaments, Arp2/3 must bind to a member of the N-WASp/SCAR family protein []. Arp2 and Arp3 are thought to be brought together after activation, forming an actin-like nucleus for actin monomers to bind and create a new actin filament. In the absence of an activating protein, Arp2/3 shows very little nucleation activity.Recent research has focused on the binding and hydrolysis of ATP by Arp2 and Arp3 [], and crystal structures of the Arp2/3 complex have been solved []. Short Name:  Arp3

0 Child Features

1 Contains

DB identifier Type Name
IPR020902 Conserved_site Actin/actin-like conserved site

3 Cross Referencess

Identifier
PTHR11937:SF170
PTHR11937:SF175
PTHR11937:SF31

0 Found In

4 GO Annotations

GO Term Gene Name
GO:0005524 IPR015623
GO:0007015 IPR015623
GO:0034314 IPR015623
GO:0005885 IPR015623

4 Ontology Annotations

GO Term Gene Name
GO:0005524 IPR015623
GO:0007015 IPR015623
GO:0034314 IPR015623
GO:0005885 IPR015623

1 Parent Features

DB identifier Type Name
IPR004000 Family Actin family

593 Proteins

DB identifier UniProt Accession Secondary Identifier Organism Name Length
420505 D8SC75 PAC:15413607 Selaginella moellendorffii 429  
evm.model.supercontig_33.85 PAC:16417732 Carica papaya 427  
29929.m004778 B9RMS2 PAC:16814016 Ricinus communis 427  
Cucsa.075290.1 A0A0A0KQ02 PAC:16955706 Cucumis sativus 428  
orange1.1g014312m A0A067GTW6 PAC:18102276 Citrus sinensis 427  
orange1.1g019189m A0A067H3J9 PAC:18102277 Citrus sinensis 345  
AT1G13180.1 Q9SAF1 PAC:19649825 Arabidopsis thaliana 427  
Thhalv10007702m V4KCS6 PAC:20185613 Eutrema salsugineum 427  
Ciclev10031954m PAC:20803461 Citrus clementina 352  
Lus10006238 PAC:23139714 Linum usitatissimum 458  
Lus10036948 PAC:23171094 Linum usitatissimum 387  
Potri.010G051500.2 U5G143 PAC:26982714 Populus trichocarpa 409  
Potri.010G051500.1 B9HTF8 PAC:26982713 Populus trichocarpa 428  
Potri.008G182700.3 PAC:27039772 Populus trichocarpa 418  
Potri.008G182700.1 B9HLD3 PAC:27039770 Populus trichocarpa 428  
Potri.008G182700.2 B9HLD3 PAC:27039771 Populus trichocarpa 428  
Gorai.002G189400.3 A0A0D2QFE1 PAC:26796234 Gossypium raimondii 370  
Gorai.002G189400.1 A0A0D2R8Y3 PAC:26796232 Gossypium raimondii 427  
Gorai.002G189400.2 A0A0D2Q8R4 PAC:26796233 Gossypium raimondii 424  
Gorai.008G162200.5 A0A0D2U475 PAC:26816547 Gossypium raimondii 427  
Gorai.008G162200.6 A0A0D2U475 PAC:26816548 Gossypium raimondii 427  
Gorai.008G162200.2 A0A0D2U475 PAC:26816544 Gossypium raimondii 427  
Gorai.008G162200.4 A0A0D2U475 PAC:26816546 Gossypium raimondii 427  
Gorai.008G162200.1 A0A0D2U475 PAC:26816545 Gossypium raimondii 427  
Gorai.008G162200.7 A0A0D2RGD9 PAC:26816549 Gossypium raimondii 391  
Gorai.008G162200.3 A0A0D2U475 PAC:26816543 Gossypium raimondii 427  
Gorai.005G174800.1 A0A0D2NEJ4 PAC:26803644 Gossypium raimondii 427  
Gorai.005G174800.3 A0A0D2PUL6 PAC:26803646 Gossypium raimondii 408  
Gorai.005G174800.2 A0A0D2RH01 PAC:26803645 Gossypium raimondii 426  
Gorai.005G174800.4 A0A0D2SIW8 PAC:26803647 Gossypium raimondii 333  

6 Publications

First Author Title Year Journal Volume Pages PubMed ID
            9889097
            15505213
            9600938
            11752435
            9290209
            7593166