Negative regulator of P-body association (NBDY)

Negative regulator of P-body association (NBDY), commonly known as NoBody or LINC01420 microprotein, is a ~7 kDa mammalian microprotein translated from a small open reading frame within the first exon of the long noncoding RNA gene LINC01420 (LOC550643)[1][2]. NBDY directly interacts with mRNA decapping proteins such as EDC4, Dcp1A/B, and Dcp2, which are central components of the 5'-to-3' mRNA decay pathway. Manipulation of NBDY levels in cells inversely correlates with the number of cytoplasmic P-bodies—organelles involved in mRNA turnover—indicating that NBDY is a functional component of the mRNA decapping complex[1]. NBDY itself is required for P-body dispersal, and its silencing increases P-body number, demonstrating its role as a negative regulator. Expression of LINC01420 and its microprotein product is broadly conserved among mammals, often exhibiting housekeeping features. In cancer cell models, LINC01420 and/or NBDY have been associated with regulation of cell migration, with reported context-dependent effects. There is currently no evidence of therapeutic targeting or known drug interactions involving NBDY[1][2]. Biological functions likely center on mRNA metabolism; potential disease roles (such as in cancer) are under active investigation.

Other names

NoBodyLINC01420P-body dissociating proteinnon-annotated P-body dissociating polypeptidelong intergenic non-protein coding RNA 1420LOC550643Protein NoBodyNBDY