FEATURES

FAMILY

DESCRIPTION

Also known as CPEB1_HUMAN, CPEB1, CPEB. Sequence-specific RNA-binding protein that regulates mRNA cytoplasmic polyadenylation and translation initiation during oocyte maturation, early development and at postsynapse sites of neurons. Binds to the cytoplasmic polyadenylation element (CPE), an uridine-rich sequence element (consensus sequence 5'-UUUUUAU-3') within the mRNA 3'-UTR. RNA binding results in a clear conformational change analogous to the Venus fly trap mechanism (PubMed:24990967). In absence of phosphorylation and in association with TACC3 is also involved as a repressor of translation of CPE-containing mRNA; a repression that is relieved by phosphorylation or degradation (By similarity). Involved in the transport of CPE-containing mRNA to dendrites; those mRNAs may be transported to dendrites in a translationally dormant form and translationally activated at synapses (By similarity). Its interaction with APLP1 promotes local CPE-containing mRNA polyadenylation and translation activation (By similarity). Induces the assembly of stress granules in the absence of stress. Required for cell cycle progression, specifically for prophase entry (PubMed:26398195). Interacts with kinesin, dynein, APLP1, APLP2, TENT2/GLD2 and APP. Both phosphorylated and non phosphorylated forms interact with APLP1 (By similarity). Interacts with TENT4B; the interaction is required for TENT4B-mediated translational control (PubMed:28383716).

EXTERNAL LINKS

CPEB1

Cytoplasmic polyadenylation element-binding protein 1

CPEB1

Molecular Synopsis