Spectrin (Sp), the most abundant of the erythrocyte membrane skeleton proteins, helps these cells maintain their characteristic biconcave shape while remaining flexible and elastic. Erythrocyte Sp is a heterodimer composed of a 280kD alpha subunit and a 246kD beta subunit which associate in a side-to-side, antiparallel configuration to form a 100 nm rod-like structure. Sp in other tissues may be composed of distinct but homologous alpha and beta subunits, sometimes referred to as fodrin. A newly introduced nomenclature designates the Sp subunits of the erythrocyte as alpha-1 and beta-1, and the fodrin subunits as alpha-2 and beta-2. Alternatively spliced forms of each are designated as epsilon-1, epsilon-2, etc. (e.g. beta-1 epsilon-1).
Suitable for use in Immunofluorescence and Western Blot. Other applications not tested.
Optimal dilutions to be determined by the researcher.
Storage and Stability:
May be stored at 4 degrees C for short-term only. For long-term storage and to avoid repeated freezing and thawing, add sterile glycerol (40-50%), aliquot and store at -20 degrees C. Aliquots are stable for at least 12 months at -20 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.