DCDC2B (Doublecortin Domain Containing 2B) is a protein that is part of the doublecortin family, recognized for its role in brain development. Proteins in this family have doublecortin domains that bind to microtubules, aiding in neuronal migration and the proper formation of the cerebral cortex. The proper function of DCDC2B is vital for normal brain development, and alterations in this protein may be linked to neurological disorders and developmental problems.