Microtubule associated protein 2 or MAP2 is a major microtubule binding protein of neurons, where it is concentrated in dendrites and perikarya but absent from axons. There is a single mammalian MAP2 gene which may generate multiple lower molecular weight forms usually named MAP2C and MAP2D which run on SDS-PAGE gels at 60-70kDa, though are actually much smaller in molecular size. These forms are found early in development but as the animal matures are replaced by MAP2A and B which are much larger in molecular size. These two forms include the so-called projection domain, a long insert which results in both molecules running at ~240kDa on SDS-PAGE gels. We have expressed five different recombinant forms of MAP2 based on the human sequence reported in REFSEQ XP_006712595.. These constructs in combination cover almost the entire human MAP2 molecule.