1. 重组蛋白
  2. Cytokines and Growth Factors
  3. TGF-beta Superfamily
  4. Activin/Inhibins
  5. Activin A

Activin A  (激活素 A)

Activin A 是一种多功能细胞因子,是 TGF-β 超家族的成员。Activin A 首先与成员表面的 II 型激活素受体 (ActIIRA 或 ActRIIB) 结合,然后募集和磷酸化 I 型激活素受体 (ActRI)。Activin A 主要通过 SMAD2/3 蛋白发出信号以调节多种功能,包括炎症、纤维化和肿瘤发生。激活素是转化生长因子-β (TGF-β) 超家族的成员,由两个通过二硫键连接的抑制素 β 亚基组成。Activin A 广泛表达于各种组织和细胞中,具有很强的生物活性,是研究最多的激活素[1]
不同物种的 Activin A 蛋白的氨基酸序列非常稳定,由此得出结论,在进化过程中,Activin A 只发生了轻微的变化,在人和动物中,其功能是相似的。
Activin 以三种基本分子形式存在,由两个抑制素 β 亚基组成:激活素 A (βAβA)、激活素 B (βBβB) 和激活素 AB (βAβB)。Activin A 以高亲和力结合激活素 II 型受体,后者募集 I 型受体并且是激活 Smad2/3 信号传导所必需的。磷酸化的 ActRI 激活 Smad2 和 Smad3,它们与 Smad4 形成复合物以转运至细胞核。Activin A 和 TGF-β 在 Smad2/3/4 水平上共享相同的信号通路。Activin A 发挥多种生物学功能,包括调节造血细胞增殖、神经元分化、垂体激素分泌和组织修复。它还参与许多疾病的过程,例如炎症、纤维化和肿瘤发生[1][2]

Activin A, a multifunctional cytokine, is a member of TGF-β superfamily. Activin A first binds to the type II activin receptors (ActIIRA or ActRIIB) on the member surface, and then recruits and phosphorylates type I activin receptors (ActRI). Activin A primarily signal through SMAD2/3 proteins to regulate a variety of functions, including inflammation, fibrosis, and tumorigenesis. Activin is a member of transforming growth factor-β (TGF-β) superfamily consisting of two inhibin β subunits linked by disulfide bonds. Activin A is expressed widely in various tissues and cells with strong bioactivities and is the mostly studied activin[1].
The sequence of amino acids in Activin A proteins from different species is very stable, which leads to the conclusion that in the process of evolution, Activin A has been only slightly altered, and that both in humans and in animals, its function is similar.
Activin exists in three basic molecular forms composed of two inhibin β subunits: activin A (βAβA), activin B (βBβB), and activin AB (βAβB). Activin A binds with high affinity to activin type II receptors, which recruit type I receptors and are necessary for the activation of Smad2/3 signaling. The phosphorylated ActRI activates Smad2 and Smad3, which form a complex with Smad4 to translocate to the nucleus. Activin and TGF-β share the same signaling pathway at the level of Smad2/3/4. Activin A exerts a variety of biological functions including regulation of hematopoietic cell proliferation, neuron differentiation, pituitary hormone secretion, and tissue repair. It is also involved in the process of many diseases, for example, inflammation, fibrosis and tumorigenesis[1][2].

目录号 产品名 / 同用名 种属 表达系统
  • HY-P70311
    Activin A Protein, Human/Mouse/Rat (HEK293)

    重组人/小鼠/大鼠激活素 A (HEK293)

    rHuActivin A; Inhibin beta A chain; INHBA; Activin A

    Human HEK293
    Activin A 是一种多功能细胞因子,是 TGF-β 超家族的成员。Activin A 首先与成员表面的 II 型激活素受体 (ActIIRA 或 ActRIIB) 结合,然后募集和磷酸化 I 型激活素受体 (ActRI)。Activin A 主要通过 SMAD2/3 蛋白发出信号以调节多种功能,包括炎症、纤维化和肿瘤发生。Activin A Protein, Human/Mouse/Rat (HEK293) 在 HEK293 细胞中表达产生,由 117 个氨基酸 (G310-S426) 组成。
  • HY-P700159AF
    Animal-Free Activin A Protein, Human/Mouse/Rat (His)

    Activin beta-A chain; EDF; Erythroid differentiation factor; Erythroid differentiation protein; Follicle stimulating hormone releasing protein; FRP; FSH releasing protein; INHBA; INHBA_HUMAN; Inhibin beta A chain; Inhibin beta A subunit; Inhibin, beta 1; Inhibin, beta A activin A, activin AB alpha polypeptide;

    Human; Rat; Mouse E. coli
    INHBA 蛋白通过与激活素一起调节促卵泡激素的分泌,在调节垂体功能中发挥关键作用。其广泛的影响涵盖多种生理过程,包括激素分泌、生殖细胞发育、红细胞分化、胰岛素分泌、神经细胞存活、胚胎发育和骨骼生长,具体取决于独特的亚基组成。Animal-Free Activin A Protein, Human/Mouse/Rat (His) 是重组的 无动物源激活素 A 蛋白,由 E. coli 表达,带有 C-His 标签。Animal-Free Activin A Protein, Human/Mouse/Rat (His) 全长 116 个氨基酸,分子量约为 ~13.9 kDa。
  • HY-P73241
    Activin A Protein, Mouse (HEK293, His)

    重组小鼠激活素 A (HEK293, His)

    Activin beta-A chain; Activin A; Inhibin beta A chain; INHBA

    Mouse HEK293
    Activin A 是一种多功能细胞因子,是 TGF-β 超家族的成员。Activin A 首先与成员表面的 II 型激活素受体(ActIIRA 或 ActRIIB) 结合,然后募集和磷酸化 I 型激活素受体 (ActRI)。Activin A 主要通过 SMAD2/3 蛋白发出信号以调节多种功能,包括炎症、纤维化和肿瘤发生。Activin A Protein, Mouse (HEK293, His) 在 HEK293 细胞中表达产生,其 C 末端带有 His 标签。
  • HY-P70311AF
    Animal-Free Activin A Protein, Human/Mouse/Rat

    Activin beta-A chain; EDF; Erythroid differentiation factor; Erythroid differentiation protein; Follicle stimulating hormone releasing protein; FRP; FSH releasing protein; INHBA; INHBA_HUMAN; Inhibin beta A chain; Inhibin beta A subunit; Inhibin, beta 1; Inhibin, beta A activin A, activin AB alpha polypeptide;

    Rat; Mouse; Human E. coli
  • HY-P70311G
    GMP Activin A Protein, Human/Mouse/Rat (HEK293)

    GMP级重组人/小鼠/大鼠激活素 A (HEK293)

    rHuActivin A; Inhibin beta A chain; INHBA; Activin A

    Rat; Mouse; Human HEK293
    INHBA 蛋白通过与激活素一起调节促卵泡激素的分泌,在调节垂体功能中发挥关键作用。其广泛的影响涵盖多种生理过程,包括激素分泌、生殖细胞发育、红细胞分化、胰岛素分泌、神经细胞存活、胚胎发育和骨骼生长,具体取决于独特的亚基组成。GMP Activin A Protein, Human/Mouse/Rat (HEK293) 是重组的 GMP 级别 激活素 A 蛋白,由 HEK293 表达,不带标签。GMP Activin A Protein, Human/Mouse/Rat (HEK293) 全长 116 个氨基酸,分子量为 13-15 kDa。
目录号 产品名 作用方式 纯度