NCIt definition : Human SBF1 wild-type allele is located in the vicinity of 22q13.33 and is approximately
41 kb in length. This allele, which encodes myotubularin-related protein 5, plays
a role in guanine nucleotide exchange and the regulation of phosphoinositol phosphatase
activity. Mutation of the gene is associated with Charcot-Marie-Tooth disease type
4B3.;