An oncopeptide regulates m(6)A recognition by the m(6)A reader IGF2BP1 and tumorigenesis.
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The paper states that RBRP has no homologs or matching proteins. Residues 1-47 of RBRP are in fact identical to human SEPTIN14 residues 383-429.
"Sequence comparisons did not identify homologs of LINC00266-1 or the RBRP peptide in any other species, and there were no matching proteins and known domains/motifs in RBRP, indicating that RBRP is an uncharacterized peptide."