Drebrin 1 (DBN1)

Drebrin 1 is a cytoplasmic actin-binding protein thought to play a role in the process of neuronal growth. It is a member of the drebrin family of proteins that are developmentally regulated in the brain. A decrease in the amount of this protein in the brain has been implicated as a possible contributing factor in the pathogenesis of memory disturbance in Alzheimer"""s disease. At least two alternative splice variants encoding different protein isoforms have been described for this gene.The deduced 649-amino acid protein shows 88% homology with rat drebrin A, except for an internal 138-nucleotide sequence. There are 3 drebrin isoforms: 2 embryonic types, E1 and E2, and an adult type, A, that are generated by alternative RNA splicing from a single drebrin gene in the chicken brain.