Recombinant Human Abl interactor 2 (ABI2)

Uniprot Id

Q9NYB9

Target Species

Human

Target Name

ABI2

Target Full Name

Abl interactor 2

Target Function

Regulator of actin cytoskeleton dynamics underlying cell motility and adhesion. Functions as a component of the WAVE complex, which activates actin nucleating machinery Arp2/3 to drive lamellipodia formation. Acts as regulator and substrate of nonreceptor tyrosine kinases ABL1 and ABL2 involved in processes linked to cell growth and differentiation. Positively regulates ABL1-mediated phosphorylation of ENAH, which is required for proper polymerization of nucleated actin filaments at the leading edge. Contributes to the regulation of actin assembly at the tips of neuron projections. In particular, controls dendritic spine morphogenesis and may promote dendritic spine specification toward large mushroom-type spines known as repositories of memory in the brain. In hippocampal neurons, may mediate actin-dependent BDNF-NTRK2 early endocytic trafficking that triggers dendrite outgrowth. Participates in ocular lens morphogenesis, likely by regulating lamellipodia-driven adherens junction formation at the epithelial cell-secondary lens fiber interface. Also required for nascent adherens junction assembly in epithelial cells.

Target Subcellular Location

Cytoplasm. Nucleus.; [Isoform 1]: Cell projection, lamellipodium. Cell projection, filopodium. Cytoplasm, cytoskeleton. Cell junction, adherens junction.

Target Protein Families

ABI family

Target Tissue Specificity

Widely expressed. Abundant in testes, ovary, thymus, and colon, with lower but detectable levels in prostate, peripheral blood leukocytes, and spleen.

Target Synonyms

Abelson interactor 2; ABI 2; Abi-2; ABI2; ABI2_HUMAN; ABI2B; Abl binding protein 3; Abl interacting protein 1 (SH3 containing protein); Abl interactor 2; Abl interactor protein 2b; Abl-binding protein 3; AblBP3; AIP 1; Arg binding protein 1; Arg protein tyrosine kinase binding protein; Arg-binding protein 1; ArgBP1; ARGBPIA; ArgBPIB; OTTHUMP00000163783; OTTHUMP00000163784; OTTHUMP00000206182; OTTHUMP00000206183; OTTHUMP00000206184; OTTHUMP00000206185; SSH3BP2

Target Background

Enables several functions, including SH3 domain binding activity; identical protein binding activity; and ubiquitin protein ligase binding activity. Contributes to small GTPase binding activity. Involved in Rac protein signal transduction; positive regulation of cellular component organization; and zonula adherens assembly. Acts upstream of or within peptidyl-tyrosine phosphorylation. Located in several cellular components, including filopodium tip; lamellipodium; and nucleoplasm. Part of SCAR complex. Is active in adherens junction. Colocalizes with actin filament.