| Catalog# | 
            C292 | 
        
        
            | Source | 
            E.coli | 
        
        
            | Description | 
            Recombinant Human Signaling Threshold-Regulating Transmembrane Adapter 1/SIT1 is produced by our E. coli expression system. The target protein is expressed with sequence (Gln65-Ser196) of Human SIT1 fused with a 6His tag at the N-terminus. | 
        
        
            | Names | 
            Signaling Threshold-Regulating Transmembrane Adapter 1, SHP2-Interacting Transmembrane Adapter Protein, Suppression-Inducing Transmembrane Adapter 1, gp30/40, SIT1, SIT | 
        
        
            | Accession # | 
            Q9Y3P8 | 
        
        
            | Formulation | 
            Lyophilized from a 0.2 μm filtered solution of 20mM Tris, 250mM Nacl, 2mM EDTA, pH 8.0 | 
        
        
            | 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 | 
            
             MGSSHHHHHHSSGLVPRGSHMQWTRGRSRSHPGQGRSGESVEEVPLYGNLHYLQTGRLSQDPEPD QQDPTLGGPARAAEEVMCYTSLQLRPPQGRIPGPGTPVKYSEVVLDSEPKSQASGPEPELYASVC AQTRRARASFPDQAYANSQPAASLEHHHHHH 
             | 
        
        
            | Background | 
            Signaling Threshold-Regulating Transmembrane Adapter 1 (SIT1) is a single-pass type I membrane protein and specifically expressed in T- and B-cells. SIT1 interacts with PTPN11/SHP2, GRB2 and CSK, when it is phosphorylated. SIT1 negatively regulates TCR (T-cell antigen receptor)-mediated signaling in T-cell. In addition, SIT1 is involved in positive selection of T-cells. |