Immunofluorescent analysis of HeLa cells transfected with a construct containing a 6x-His Epitope Tag. Formalin fixed cells were permeabilized with 0.1% Triton X-100 in TBS for 10 minutes at room temperature and blocked with 1% Blocker BSA (Product # 37525) for 15 minutes at room temperature. Cells were probed with a DyLight 550-conjugated 6x-His Epitope Tag monoclonal antibody (Product # MA1-21315-D550) at a dilution of 1:25 for at least 1 hour at room temperature. Nuclei (blue) were stained with Hoechst 33342 dye (Product # 62249). Images were taken on a Thermo Scientific ArrayScan or ToxInsight Instrument at 20X magnification.
|Tested species reactivity||Tag|
|Host / Isotype||Mouse / IgG2b|
|Immunogen||6x His synthetic peptide.|
|Storage buffer||PBS with proprietary stabilizer|
|Contains||0.02% sodium azide|
|Storage Conditions||4° C, do not freeze|
|Tested Applications||Dilution *|
|Immunofluorescence (IF)||1:25 - 1:100|
* Suggested working dilutions are given as a guide only. It is recommended that the user titrate the product for use in their own experiment using appropriate negative and positive controls.
MA1-21315-D550 has been successfully used for immunofluorescence. DyLight 550 has an excitation/emission of 562/576 nm.
Epitope tags provide a method to localize gene products in a variety of cell types, study the topology of proteins and protein complexes, identify associated proteins, and characterize newly identified, low abundance or poorly immunogenic proteins when protein specific antibodies are not available. Expression of recombinant proteins in E. coli as a fusion protein with neighboring histidine residues is one of the most popular methods of epitope tags. The affinity of the histidine-tag motif to Ni2+ by chelation is strong and selective enough to enable purification of the protein to homogeneity by affinity chromatography on a Ni2+-NTA adsorbent.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.