The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Use a concentration of 1 - 5 µg/ml. Predicted molecular weight: 77 kDa.
Use a concentration of 3 µg/ml.
Use at an assay dependent concentration.
Use 0.5µg for 106 cells.
ab170191 - Mouse monoclonal IgG2a, is suitable for use as an isotype control with this antibody.
Use a concentration of 10 µg/ml.
Use at 4 µg/mg of lysate.
Plays a role in mediating Ca(2+) influx following depletion of intracellular Ca(2+) stores. Acts as Ca(2+) sensor in the endoplasmic reticulum via its EF-hand domain. Upon Ca(2+) depletion, translocates from the endoplasmic reticulum to the plasma membrane where it activates the Ca(2+) release-activated Ca(2+) (CRAC) channel subunit, TMEM142A/ORAI1.
Ubiquitously expressed in various human primary cells and tumor cell lines.
Involvement in disease
Defects in STIM1 are the cause of immune dysfunction with T-cell inactivation due to calcium entry defect type 2 (IDTICED2) [MIM:612783]. IDTICED2 is an immune disorder characterized by recurrent infections, impaired T-cell activation and proliferative response, decreased T-cell production of cytokines, lymphadenopathy, and normal lymphocytes counts and serum immunoglobulin levels. Additional features include thrombocytopenia, autoimmune hemolytic anemia, non-progressive myopathy, partial iris hypoplasia, hepatosplenomegaly and defective enamel dentition.
The microtubule tip localization signal (MtLS) motif; mediates interaction with MAPRE1 and targeting to the growing microtubule plus ends.
Glycosylation is required for cell surface expression. Phosphorylated predominantly on Ser residues.
Cell membrane. Endoplasmic reticulum membrane. Cytoplasm > cytoskeleton. Translocates from the endoplasmic reticulum to the cell membrane in response to a depletion of intracellular calcium. Associated with the microtubule network at the growing distal tip of microtubules.
ab57834 at 10 ug/ml staining Stromal interaction molecule 1 in human Hella cells by Immunocytochemistry/ Immunofluorescence.
Immunocytochemistry/ Immunofluorescence - Anti-Stromal interaction molecule 1 antibody (ab57834)This image is courtesy of an anonymous Abreview
ab57834 staining the stromal interaction molecule in HeLa cells by immunocytochemistry/immunofluorescence (ICC/IF). Cells were fixed with paraformaldehyde and permeabilized with 0.5% TritonX. Samples were incubated with primary antibody (1/200) for 1 hour at 24°C. An Alexa Fluor ® 488-conjugated chicken anti-mouse polyclonal (1/1000) was used as the secondary.
Overlay histogram showing HeLa cells stained with ab57834 (red line). The cells were fixed with 80% methanol (5 min) and then permeabilized with 0.1% PBS-Tween for 20 min. The cells were then incubated in 1x PBS / 10% normal goat serum / 0.3M glycine to block non-specific protein-protein interactions followed by the antibody (ab57834, 0.5µg/1x106 cells) for 30 min at 22ºC. The secondary antibody used was DyLight® 488 goat anti-mouse IgG (H+L) (ab96879) at 1/500 dilution for 30 min at 22ºC. Isotype control antibody (black line) was mouse IgG2a [ICIGG2A] (ab91361, 1µg/1x106 cells) used under the same conditions. Acquisition of >5,000 events was performed.
Li P et al. Blocking of stromal interaction molecule 1 expression influence cell proliferation and promote cell apoptosis in vitro and inhibit tumor growth in vivo in head and neck squamous cell carcinoma. PLoS One12:e0177484 (2017).
Read more (PubMed: 28494008) »
Huang M et al. The maintenance ability and Ca(2+) availability of skeletal muscle are enhanced by sildenafil. Exp Mol Med48:e278 (2016).
Read more (PubMed: 27932789) »