This protein is associated with nerve growth. It is a major component of the motile growth cones that form the tips of elongating axons. Plays a role in axonal and dendritic filopodia induction. Identified in a complex containing FGFR4, NCAM1, CDH2, PLCG1, FRS2, SRC, SHC1, GAP43 and CTTN. Binds calmodulin with a greater affinity in the absence of Ca(2+) than in its presence. Belongs to the neuromodulin family. 2 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Molecular Function: calmodulin binding; protein binding
Biological Process: cell fate commitment; glial cell differentiation; tissue regeneration; regulation of growth; protein kinase C activation; axon choice point recognition; response to wounding; regulation of filopodium formation
Alt. Names/Synonyms: Axonal membrane protein GAP-43; B-50; calmodulin-binding protein P-57; GAP43; growth associated protein 43; Growth-associated protein 43; nerve growth-related peptide GAP43; NEUM; Neural phosphoprotein B-50; Neuromodulin; neuron growth-associated protein 43; pp46; protein F1
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.