Anti-Human Activin RIIA

Product Datasheet

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Purified No Carrier Protein

(ACVR2A)

Monoclonal Antibody

Prod. No.:	A377
Clone:	126706
Isotype:	Mouse IgG_2a
Pkg. Size:	1 mg, 500 µg
Storage:	-20°C to -70°C Detailed storage instructions below.

Description

Specificity:

Mouse Anti-Human Activin RIIA (Clone 126706) recognizes an epitope on Human Activin RIIA. This monoclonal antibody was purified using multi-step affinity chromatography methods such as Protein A or G depending on the species and isotype. This antibody does not cross-react with rhActivin RIA, rhActivin RIB or rhActivin RIIB.

Background:

Activin A receptor, type IIA, also known as ACVR2A, is a human gene.[1] ACVR2A is an activin type 2 receptor. This gene encodes activin A type II receptor. Activins are dimeric growth and differentiation factors which belong to the transforming growth factor-beta (TGF-beta) superfamily of structurally related signaling proteins. Activins signal through a heteromeric complex of receptor serine kinases which include at least two type I (I and IB) and two type II (II and IIB) receptors. These receptors are all transmembrane proteins, composed of a ligand-binding extracellular domain with cysteine-rich region, a transmembrane domain, and a cytoplasmic domain with predicted serine/threonine specificity. Type I receptors are essential for signaling; and type II receptors are required for binding ligands and for expression of type I receptors. Type I and II receptors form a stable complex after ligand binding, resulting in phosphorylation of type I receptors by type II receptors. Type II receptors are considered to be constitutively active kinases.

Activin type II receptors are highly conserved. Human, mouse and rat type II activin receptors share greater than 98% amino acid sequence homology. Recombinant soluble activin type II receptors bind activin with high affinity, and are potent activin antagonists.

Known Species Cross Reactivity: Hu+

Host Species

Mouse

Immunogen

Purified Recombinant Human Activin RIIA (>98%)

Formulation

This monoclonal antibody has been 0.2 µm filtered and lyophilized from modified Dulbecco's phosphate buffered saline (1X PBS) pH 7.2 - 7.3 containing 5.0% w/v trehalose with no calcium, magnesium or preservatives present.

Reconstitution

This lyophilized antibody may be aseptically reconstituted with sterile PBS to a final volume of 1.0 ml. This will result in a final antibody concentration of 500 µg/ml.

Endotoxin

<0.1 EU/µg as determined by the LAL method

Storage and Stability

The lyophilized antibody can be stored desiccated at -20°C to -70°C for up to twelve months. The reconstituted antibody can be stored for at least four weeks at 2-8°C. For long-term storage of the reconstituted antibody, aseptically aliquot into working volumes and store at -20°C to -70°C in a manual defrost freezer. Avoid repeated freeze thaw cycles. No detectable loss of activity was observed after six months.

Reported Applications

Indirect ELISA, WB

Indirect ELISA: This antibody can be used in an indirect detection ELISA at 0.5 - 1.0 µg/ml with a suitable second step reagent such as Goat Anti-Mouse IgG (H&L)-Horseradish Peroxidase (Leinco Prod. No.: M114). The detection sensitivity of this indirect ELISA for Human Activin RIIA is approximately 2.0 ng/well.

Western Blotting: To detect Human Activin RIIA this monoclonal antibody can be used at a concentration of 1-2 µg/ml. This monoclonal antibody should be used in conjunction with compatible second-step reagents such as Goat Anti-Mouse IgG (H&L)-Horseradish Peroxidase (Leinco Prod. No.: M114) and a chromogenic substrate such as TMB HRPO Membrane/IHC Substrate UltraSensitive™ One Component "Ready Use" (Leinco Prod. No.: T343). The detection limit for Human Activin RIIA is 5 ng/lane under either reducing or non-reducing conditions. The sensitivity of detection may increase up to 50 fold when a chemiluminescent substrate is used. A suitable Western blotting control is Recombinant Human Activin RIIA (Leinco Prod. No.: A342).

Each investigator should determine their own optimal working dilution for specific applications.

Country of Origin

USA