Goat Fab anti-Mouse IgM (µ)-Alexa Fluor 647, MinX none
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SKU 115-607-020 Host Species IgG Form Species Reactivity Specificity Isotype Clonality (Mono-/Polyclonal) Application Conjugation Maximum Absorption Maximum Emission No Cross-reactivity (MinX) with Dilution Format Application Note
recommended weight ratio (w/w) Fab:Prim.Ab 1:1 (3:1 molar ratio), suitable to complex with primary antibody in solution, titrate complex to optimal dilution for assay, vortex Prim.Ab+Fab and incubate 30 min at RT
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Based on immunoelectrophoresis and/or ELISA, the antibody reacts with the heavy chain of mouse IgM but not with mouse IgG or the light chains of mouse immunoglobulins. No antibody was detected against non-immunoglobulin serum proteins. The antibody may cross-react with IgM from other species.
Alexa Fluor 647-conjugated antibodies absorb light maximally around 651 nm and fluoresce maximally around 667 nm. They are brighter than Cy5 and DyLight 650 in aqueous mounting media. Alexa Fluor 647- and APC-conjugated secondary antibodies are the best choice for flow cytometry when secondary antibodies fluorescing at these wavelengths are desired. Alexa Fluor 647 conjugates are the best choice of far red-emitting dyes for multiple-labeling detection with a confocal microscope.
A significant advantage of using Alexa Fluor 647 over lower wavelength-emitting dyes is the low autofluorescence of biological specimens in this region of the spectrum. However, because of its peak emission at 667 nm, Alexa Fluor 647 cannot be seen well by eye, and it cannot be excited optimally with a mercury lamp. Therefore, Alexa Fluor 647 is not recommended for use with conventional epifluorescent microscopes. It is most commonly visualized with a confocal microscope equipped with an appropriate laser for excitation and a far-red detector. Alexa Fluor 647 conjugates are less expensive alternatives to allophycocyanin conjugates for flow cytometry.