CNOT7 (CCR4-NOT transcription complex subunit 7) has 3'-5' poly(A) exoribonuclease activity for synthetic poly(A) RNA substrate. Its function seems to be partially redundant with that of CNOT8. CNOT7 is a catalytic component of the CCR4-NOT complex, which is one of the major cellular mRNA deadenylases, and is linked to various cellular processes including bulk mRNA degradation, miRNA-mediated repression, translational repression during translational initiation, and general transcription regulation. During miRNA-mediated repression, the complex seems to act as a transcriptional repressor during translational initiation, as well. Additional complex functions may be a consequence of its influence on mRNA expression. CNOT7 associates with members of the BTG family such as TOB1 and BTG2 and is required for their anti-proliferative activity.
BTG1-binding factor 1; CAF-1; Caf1a; carbon catabolite repressor protein (CCR4)-associative factor 1; CCR4-associated factor 1; CCR4-NOT transcription complex subunit 7