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Examination and Analysis of Numb 3' UTR

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Numb is a gene that encodes an adaptor protein which has been characterized for its role cell migration, cell adhesion, endocytosis, and cell fate determination through asymmetrical division in various

Numb is a gene that encodes an adaptor protein which has been characterized for its role cell migration, cell adhesion, endocytosis, and cell fate determination through asymmetrical division in various embryonic and adult tissues. In vertebrates, several Numb isoforms are produced via alternative splicing. In the Mus musculus genome, one Numb gene on chromosome 12 is alternatively spliced to produce four distinct protein isoforms, characterized by an 11 amino acid insert in the phosphotyrosine binding domain and a 49 amino acid insert in the proline rich region. Two poly adenylation sites in the currently published Numb 3' UTR exist, thus, the possibility that various 3' UTRs containing different miRNA seed sites is a possible posttranscriptional mechanism by which differential expression is observed. In an attempt to elucidate this hypothesis, PCR was performed to amplify the 3' UTR of murine neural tube cells, the products of which were subsequently cloned and sequenced. Multiple fragment sizes were consistently observed in the PCR data, however, sequencing demonstrated that these bands did not reveal an association with Numb.

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  • 2017-05