SRP3003

Activin A human

recombinant, expressed in E. coli, ≥97% (SDS-PAGE), ≥97% (HPLC), suitable for cell culture

• Sinónimos: Activin beta-A, FRP, Inhibin beta-1
• Código UNSPSC: 12352202
• NACRES: NA.32

Propiedades

• origen biológico: human
• recombinante: expressed in E. coli
• Análisis: ≥97% (HPLC); ≥97% (SDS-PAGE)
• formulario: lyophilized
• potencia: ≤2.0 ng/mL ED₅₀
• mol peso: 26.0 kDa
• envase: pkg of 10 μg
• técnicas: cell culture | mammalian: suitable
• impurezas: <0.1 EU/μg endotoxin, tested
• Nº de acceso UniProt: P08476
• Condiciones de envío: wet ice
• temp. de almacenamiento: −20°C
• Información sobre el gen: human ... INHBA(3624) ; mouse ... Inhba(16323) ; rat ... Inhba(29200)

Descripción

Descripción general

Activins (also referred to as inhibins) are generally dimers of three subunits: inhibin βA, inhibin βB, and inhibin α. Recombinant human Activin A (inhibin βA) is a 26kDa disulfide-linked homodimer of two bA chains, each containing 116 amino acid residues. The sequence of mature Activin A is completely homologous between human, mouse, and rat species.

Aplicación

Activin A has been used in monolayer induction for endoderm (hepatocyte) differentiation.

Activin A human has been used to study rRNA gene transcription during directed differentiation of human embryonic stem cells.

Acciones bioquímicas o fisiológicas

Activin A (inhibin βA) is a TGF (transforming growth factor)-β family member that exhibits a wide range of biological activities including regulation of cellular proliferation and differentiation, and promotion of neuronal survival. Elevated levels of Activin A in human colorectal tumors and in postmenopausal women have been implicated in colorectal and breast cancers, respectively. Activin A plays a central role in reproduction by regulating the levels of follicle stimulating hormone (FSH). It is involved in hematopoiesis, embryogenesis and osteogenesis. It exhibits both tumor suppressing and promoting effects. In underweight and overweight humans, high levels of Activin A in serum might be associated with the pathogenesis of asthma. The biological activities of Activin A can be neutralized by inhibins and by the diffusible TGF-β antagonist, follistatin.

Secuencia

GLECDGKVNI CCKKQFFVSF KDIGWNDWII APSGYHANYC EGECPSHIAG TSGSSLSFHS TVINHYRMRG HSPFANLKSC CVPTKLRPMS MLYYDDGQNI IKKDIQNMIV EECGCS

Forma física

Lyophilized with no additives.

Reconstitución

Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20°C to -80°C.

Información de seguridad

• Código de clase de almacenamiento: 11 - Combustible Solids
• Clase de riesgo para el agua (WGK): WGK 3
• Punto de inflamabilidad (°F): Not applicable
• Punto de inflamabilidad (°C): Not applicable