mRNA-decapping enzyme 1B (DCP1B)

mRNA-decapping enzyme 1B (DCP1B) is a human protein encoded by the DCP1B gene, functioning as a core component of the mRNA decapping complex responsible for 5’ cap removal from messenger RNA[5][6][3]. This enzyme acts within cytoplasmic foci, termed P-bodies, which serve as sites for mRNA turnover and degradation[4]. DCP1B is involved in both normal mRNA turnover and nonsense-mediated mRNA decay, and it plays a critical role in regulating mRNA stability, thereby impacting post-transcriptional gene expression[1][2][3]. It interacts with other decapping factors (most notably DCP2) and acts as a platform enhancing mRNA-binding affinity of the decapping catalytic subunit, DCP2[1]. Its biological function appears to partly overlap with its paralog DCP1A; both are functionally redundant with distinct roles in specific endogenous mRNA regulation[1]. Current literature does not support any direct association with major disease pathophysiology or targeted therapeutics; drug interaction and biomarker relevance have not been demonstrated[3][6].

Other names

DCP1Bdecapping mRNA 1BDCP1hDcp1bDCP1 decapping enzyme homolog BFLJ31638