Description
Required in mushroom body gamma neurons for long-term memory in male courtship (PubMed:17965711, PubMed:23083740). Binds to mRNA 3'-UTRs (PubMed:20547833, PubMed:26638074, PubMed:24830287, PubMed:26095367). In its monomeric form, acts as a translational repressor of genes involved in neuronal growth, synapse formation and protein turnover (PubMed:20547833, PubMed:26638074). In its amyloid-like oligomeric form, acts as a translational activator (PubMed:26638074). The monomeric form reduces poly(A) tail length and destabilizes mRNA while the oligomeric form protects and elongates the poly(A) tail and stabilizes mRNA (PubMed:26638074). Isoform A is required for initial memory acquisition and, following subsequent late dopaminergic pathway activation, isoform A recruits isoform B into a complex to activate translation of CaMKII which is required for long-term memory consolidation (PubMed:26095367). Involved in asymmetric cell division in the central nervous system (PubMed:21900268). Required for the progression of spermatogenesis through meiosis and for sperm differentiation (PubMed:23209437). During sperm differentiation, required to asymmetrically localize and activate the translation of protein kinase aPKC mRNAs which is necessary for spermatid cyst polarization (PubMed:24830287). Also required during spermatid cyst polarization for localization and translation of its own mRNA (PubMed:24830287).
Subunit
Monomer (PubMed:22284910, PubMed:23083740). Upon neuronal stimulation, forms stable amyloid-like oligomers composed of isoform A and isoform B which are required for formation of persistent long-term memory (PubMed:22284910, PubMed:23083740). Isoform A is critical for oligomer formation (PubMed:22284910, PubMed:23083740). Phe-5 of isoform A is required for amyloid-like oligomerization (PubMed:22284910, PubMed:26812143). Rapidly forms amyloids and toxic intermediates are extremely transient (PubMed:26812143). Interacts with the translational regulator bol (PubMed:23209437). Interacts with Tob; the interaction is enhanced by neuronal stimulation, stabilizes isoform A and induces oligomerization (PubMed:24523662).
Subcellular location
Perikaryon
In embryonic and larval nervous system, concentrated in the perikaryon (PubMed:21900268). In the adult central nervous system, localizes to synaptic terminals (PubMed:21900268). In the ovary, localizes to the cytoplasm of nurse cells (PubMed:21900268). In spermatocytes, localizes throughout the cytoplasm with higher levels concentrated in a ring around the nucleus (PubMed:23209437). The oligomeric form is enriched in the synaptic region (PubMed:22284910). With evidence from 8 publications.
Cell projection
In embryonic and larval nervous system, concentrated in the perikaryon (PubMed:21900268). In the adult central nervous system, localizes to synaptic terminals (PubMed:21900268). In the ovary, localizes to the cytoplasm of nurse cells (PubMed:21900268). In spermatocytes, localizes throughout the cytoplasm with higher levels concentrated in a ring around the nucleus (PubMed:23209437). The oligomeric form is enriched in the synaptic region (PubMed:22284910). With evidence from 8 publications.
Axon
In embryonic and larval nervous system, concentrated in the perikaryon (PubMed:21900268). In the adult central nervous system, localizes to synaptic terminals (PubMed:21900268). In the ovary, localizes to the cytoplasm of nurse cells (PubMed:21900268). In spermatocytes, localizes throughout the cytoplasm with higher levels concentrated in a ring around the nucleus (PubMed:23209437). The oligomeric form is enriched in the synaptic region (PubMed:22284910). With evidence from 8 publications.
Dendrite
In embryonic and larval nervous system, concentrated in the perikaryon (PubMed:21900268). In the adult central nervous system, localizes to synaptic terminals (PubMed:21900268). In the ovary, localizes to the cytoplasm of nurse cells (PubMed:21900268). In spermatocytes, localizes throughout the cytoplasm with higher levels concentrated in a ring around the nucleus (PubMed:23209437). The oligomeric form is enriched in the synaptic region (PubMed:22284910). With evidence from 8 publications.
Cell junction
In embryonic and larval nervous system, concentrated in the perikaryon (PubMed:21900268). In the adult central nervous system, localizes to synaptic terminals (PubMed:21900268). In the ovary, localizes to the cytoplasm of nurse cells (PubMed:21900268). In spermatocytes, localizes throughout the cytoplasm with higher levels concentrated in a ring around the nucleus (PubMed:23209437). The oligomeric form is enriched in the synaptic region (PubMed:22284910). With evidence from 8 publications.
Synapse
In embryonic and larval nervous system, concentrated in the perikaryon (PubMed:21900268). In the adult central nervous system, localizes to synaptic terminals (PubMed:21900268). In the ovary, localizes to the cytoplasm of nurse cells (PubMed:21900268). In spermatocytes, localizes throughout the cytoplasm with higher levels concentrated in a ring around the nucleus (PubMed:23209437). The oligomeric form is enriched in the synaptic region (PubMed:22284910). With evidence from 8 publications.
Cytoplasm
In embryonic and larval nervous system, concentrated in the perikaryon (PubMed:21900268). In the adult central nervous system, localizes to synaptic terminals (PubMed:21900268). In the ovary, localizes to the cytoplasm of nurse cells (PubMed:21900268). In spermatocytes, localizes throughout the cytoplasm with higher levels concentrated in a ring around the nucleus (PubMed:23209437). The oligomeric form is enriched in the synaptic region (PubMed:22284910). With evidence from 8 publications.
Perinuclear region
In embryonic and larval nervous system, concentrated in the perikaryon (PubMed:21900268). In the adult central nervous system, localizes to synaptic terminals (PubMed:21900268). In the ovary, localizes to the cytoplasm of nurse cells (PubMed:21900268). In spermatocytes, localizes throughout the cytoplasm with higher levels concentrated in a ring around the nucleus (PubMed:23209437). The oligomeric form is enriched in the synaptic region (PubMed:22284910). With evidence from 8 publications.