| Catalog# | 
            CA76 | 
        
        
            | Source | 
            Human Cells | 
        
        
            | Description | 
            Recombinant Human Activin Receptor Type-1/ACVR1 is produced by our mammalian expression system in human cells. The target protein is expressed with sequence (Met21-Val124) of Human ACVR1 fused with a polyhistidine tag at the C-terminus. | 
        
        
            | Names | 
            Activin Receptor Type-1, Activin Receptor Type I, ACTR-I, Activin Receptor-Like Kinase 2, ALK-2, Serine/Threonine-Protein Kinase Receptor R1, SKR1, TGF-B Superfamily Receptor Type I, TSR-I, ACVR1, ACVRLK2 | 
        
        
            | Accession # | 
            Q04771 | 
        
        
            | Formulation | 
            Lyophilized from a 0.2 μm filtered solution of 20mM PB,150mM NaCl,pH7.4 | 
        
        
            | Shipping | 
            The product is shipped at ambient temperature. | 
        
        
            | Reconstitution | 
            Always centrifuge tubes before opening. Do not mix by vortex or pipetting. 
            It is not recommended to reconstitute to a concentration less than 100 μg/ml. 
            Dissolve the lyophilized protein in 1X PBS. 
            Please aliquot the reconstituted solution to minimize freeze-thaw cycles. | 
        
        
            | Storage | 
            Lyophilized protein should be stored at < -20°C, though stable at room temperature for 3 weeks. 
            Reconstituted protein solution can be stored at 4-7°C for 2-7 days. 
            Aliquots of reconstituted samples are stable at < -20°C for 3 months. | 
        
        
            | Purity | 
            Greater than 95% as determined by SEC-HPLC and reducing SDS-PAGE. | 
        
        
            | Endotoxin | 
            Less than 0.1 ng/µg (1 IEU/µg). | 
        
        
            | Amino Acid Sequence | 
            
             MEDEKPKVNPKLYMCVCEGLSCGNEDHCEGQQCFSSLSINDGFHVYQKGCFQVYEQGKMTCKTPP SPGQAVECCQGDWCNRNITAQLPTKGKSFPGTQNFHLEVVDHHHHHH 
             | 
        
        
            | Background | 
            Activin receptor type-1, also known as Activin receptor type I, Activin receptor-like kinase 2, Serine/threonine-protein kinase receptor R1, TGF-B superfamily receptor type I, ACVRLK2 and ACVR1, is a single-pass type I membrane protein. ACVR1 is expressed in normal parenchymal cells, endothelial cells, fibroblasts and tumor-derived epithelial cells. ACVR1 belongs to the protein kinase superfamily. 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. ACVR1 signals a particular transcriptional response in concert with activin type II receptors. |