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  2. Arp2/3 Complex

Arp2/3 Complex

The intact ARP2/3 complex is first purified from Acanthamoeba castellanii based on its affinity for the actin-binding protein profilin, and is shown to consist of a stable assembly of seven polypeptides. Two of the subunits are actin-related proteins of the ARP2 and ARP3 subfamilies, giving the complex its name.

The ARP2/3 complex possesses little biochemical activity on its own. However, when engaged by nucleation-promoting factor (NPF) proteins, it is activated to initiate the formation of a new (daughter) filament that emerges from an existing (mother) filament in a y-branch configuration with a regular 70° branch angle. This coupling of nucleation and branching by the ARP2/3 complex is referred to as autocatalytic branching or dendritic nucleation, and is central to its functions in vivo.

Polymerization of actin filaments directed by the Arp2/3 complex supports many types of cellular movements。

Arp2/3 Complex 相关产品 (3):

Cat. No. Product Name Effect Purity
  • HY-16928
    Cytochalasin B >98.0%
    Cytochalasin B 是一种能透过细胞的真菌毒素,能够与肌动蛋白丝的有刺端结合,扰乱肌动蛋白聚合物的形成,对 F-actin 的 Kd 值为 1.4-2.2 nM。
  • HY-15892
    CK-636 Inhibitor 98.10%
    CK-636是具有细胞渗透性的Arp2/3 复合体抑制剂,能抑制肌动蛋白的聚合,对人,裂殖酵母和牛的 IC50 值分别为4 μM,24 μM和32 μM。
  • HY-16927
    CK-869 Inhibitor 99.76%
    CK-869 是肌动蛋白相关蛋白 2/3 复合体 (ARP2/3) 的抑制剂,其 IC50 值为 7 μM。
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