Protein NUMB homolog is an evolutionarily conserved protein that controls the differentiation of neuronal progenitor cells. Recent studies have revealed that NUMB functions in clathrin-dependent endocytosis by binding to the AP-2 complex. NUMB is also expressed in postmitotic neurons and plays a role in axonal growth. Neural cells expressing Numb isoforms with short phosphotyrosine-binding (SPTB) domain undergo extensive neurite outgrowth, an effect that can be blocked by voltage-gated Ca2+ channel (VGCC) inhibitor or by Ca2+ chelator.
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Protein Aliases: h-Numb; m-numb; mnb; numb homolog; Protein numb homolog; Protein S171
Gene Aliases: c14_5527; C14orf41; NUMB; S171
UniProt ID: (Human) P49757
Entrez Gene ID: (Human) 8650
Molecular Function: signaling molecule