ACVR2B active protein

ACVR2B Protein, Human, Recombinant (ECD, hFc Tag)

Cat. Num. AAA8120119

• Gene Names: ACVR2B; HTX4; ACTRIIB; ActR-IIB
• Purity: >97% as determined by SDS-PAGE
• Synonyms: ACVR2B; ACVR2B Protein; Human; Recombinant (ECD; hFc Tag); Human ACVR2B/ActivinR-IIB Protein (ECD; Fc Tag); Activin RIIB Protein; ActR-IIB Protein; ACTRIIB Protein; HTX4 Protein; activin A receptor; type IIB; ACVR2B active protein

• Host: HEK293 Cells
• Purity/Purification: >97% as determined by SDS-PAGE
• Form/Format: Lyophilized from sterile PBS, pH7.4. Normally 5%-8% trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.
• Sequence: Met1-Thr134

• Species: Human
• Endotoxin: <1.0EU per ug of the protein as determined by the LAL method
• Predicted N Terminal: Ser 19
• Tag: C-human IgG1-Fc
• Protein Construction: A DNA sequence encoding the N-terminal segment (Met 1-Thr 134) from the extracellular domain of human ACVR2B (NP_001097.2) was expressed with the fused human IgG1 Fc region at the C-terminus.
• Reconstitution: A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
• Activity: 1. Measured by its ability to neutralize Activin-mediated inhibition on MPC11 cell proliferation. The ED50 for this effect is typically 0.02-0.1ug/mL in the presence of 10ng/mL recombinant Activin A.; 2. Measured by its binding ability in a functional ELISA. Immobilized Inhibin Human, Mouse, Rat, Cynomolgus, Rhesus Inhibin beta A/Activin A at 2ug/ml (100uL/well) can bind Human ACVR2B hFc. The EC50 of Human ACVR2B hFc is 12-60ng/mL.
• Preparation and Storage: Samples are stable for up to twelve months from date of receipt at -20 degree C to -80 degree C. Store it under sterile conditions at -20 degree C to -80 degree C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.; In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. Bulk packages of recombinant proteins are provided as frozen liquid.; They are shipped out with blue ice.

SDS-Page

Testing Data

(Measured by its binding ability in a functional ELISA. Immobilized Inhibin Human, Mouse, Rat, Cynomolgus, Rhesus Inhibin beta A/Activin A at 2 ug/ml (100 ul/well) can bind Human ACVR2B hFc, the EC50 of Human ACVR2B hFc is 12-60 ng/mL.)

Related Product Information for ACVR2B active protein

Background: ACVR2A and ACVR2B are two activin type II receptors. ACVR2B is integral to the activin and myostatin signaling pathway. Ligands such as activin and myostatin bind to ACVR2A and ACVR2B. Myostatin, a negative regulator of skeletal muscle growth, is regarded as a potential therapeutic target and binds to ACVR2B effectively, and to a lesser extent, to ACVR2A. The structure of human ACVR2B kinase domain in complex with adenine establishes the conserved bilobal architecture consistent with all other catalytic kinase domains. Haplotype structure at the ACVR2B and follistatin loci may contribute to interindividual variation in skeletal muscle mass and strength. Defects in ACVR2B are a cause of left-right axis malformations.

References

Kosaki R, et al. (1999) Left-right axis malformations associated with mutations in ACVR2B, the gene for human activin receptor type IIB. Am J Med Genet. 82(1):70-6. Dupont S, et al. (2001) No evidence for linkage or for diabetes-associated mutations in the activin type 2B receptor gene (ACVR2B) in French patients with mature-onset diabetes of the young or type 2 diabetes. Diabetes 50(5):1219-21. Albertson RC, et al. (2005) Zebrafish acvr2a and acvr2b exhibit distinct roles in craniofacial development. Developmental dynamics 233(4): 1405-18. Walsh S, et al. (2007) Activin-type II receptor B (ACVR2B) and follistatin haplotype associations with muscle mass and strength in humans. J Appl Physiol. 102(6):2142-8.

NCBI and Uniprot Product Information

• NCBI GI #: 116734708
• NCBI GeneID: 93
• NCBI Accession #: NP_001097.2
• NCBI GenBank Nucleotide #: NM_001106.3
• UniProt Accession #: Q13705; Q4VAV0
• Molecular Weight: – Da
• NCBI Official Full Name: activin receptor type-2B
• NCBI Official Synonym Full Names: activin A receptor type 2B
• NCBI Official Symbol: ACVR2B
• NCBI Official Synonym Symbols: HTX4; ACTRIIB; ActR-IIB
• NCBI Protein Information: activin receptor type-2B
• UniProt Protein Name: Activin receptor type-2B
• Protein Family: Activin receptor
• UniProt Gene Name: ACVR2B
• UniProt Synonym Gene Names: ACTR-IIB
• UniProt Entry Name: AVR2B_HUMAN

NCBI Description

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. This gene encodes activin A type IIB receptor, which displays a 3- to 4-fold higher affinity for the ligand than activin A type II receptor. [provided by RefSeq, Jul 2008]

Uniprot Description

ACVR2B: a tyrosine-kinase like receptor kinase of the STKR family. The holoreceptor receptor is 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. Each is composed of a ligand-binding extracellular domain with cysteine-rich region, a transmembrane domain, and a cytoplasmic kinase domain. 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 receptor kinases are apparently constitutively active. The IIB receptor displays a 3- to 4-fold higher affinity for activin A than the II receptor.

Protein type: Protein kinase, TKL; Protein kinase, Ser/Thr (receptor); Membrane protein, integral; Kinase, protein; EC 2.7.11.30; TKL group; STKR family; Type2 subfamily

Chromosomal Location of Human Ortholog: 3p22

Cellular Component: cytoplasm; integral to plasma membrane; plasma membrane; protein complex; receptor complex

Molecular Function: activin receptor activity, type II; growth factor binding; protein binding; protein serine/threonine kinase activity

Biological Process: activin receptor signaling pathway; anterior/posterior pattern formation; blood vessel remodeling; BMP signaling pathway; lymphangiogenesis; negative regulation of transcription from RNA polymerase II promoter; positive regulation of activin receptor signaling pathway; positive regulation of bone mineralization; positive regulation of osteoblast differentiation; regulation of transcription, DNA-dependent; signal transduction; transmembrane receptor protein serine/threonine kinase signaling pathway

Disease: Heterotaxy, Visceral, 4, Autosomal