Insulin-like growth factor 2 mRNA-binding protein 2
Synonyms
IGF2 mRNA-binding protein 2, IMP-2, Hepatocellular carcinoma autoantigen p62, IGF-II mRNA-binding protein 2, VICKZ family member 2 | IMP2, VICKZ2
Primary ID
Q9Y6M1
Links
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Type
protein
Relations
1
Function
RNA-binding factor that recruits target transcripts to cytoplasmic protein-RNA complexes (mRNPs). This transcript 'caging' into mRNPs allows mRNA transport and transient storage. It also modulates the rate and location at which target transcripts encounter the translational apparatus and shields them from endonuclease attacks or microRNA-mediated degradation (By similarity). Binds to the 5'-UTR of the insulin-like growth factor 2 (IGF2) mRNAs. Binding is isoform-specific. Binds to beta-actin/ACTB and MYC transcripts.
IGF2BP2 can be activated by mTOR and promotes its binding to IGF2 mRNA of IGF2 thereby leading to diabetes mellitus [ xref , xref ].|In addition, phosphorylation of IGF2BP2 in the linker region between RRM2 and KH1 by mTOR promotes its binding to the IGF leader 3 mRNA 5\u2032-UTR, enhancing the initiation of IGF2 translation through eIF-4E- and 5\u2032 cap-independent internal ribosomal entry [ xref ].