This is an uncharacterised domain that is found on the CCR4-Not complex component Not1. Not1 is a global regulator of transcription that affects genes positively and negatively and is thought to regulate transcription factor TFIID [1].

1: Interaction between Not1p, a component of the Ccr4-not complex, a global regulator of transcription, and Dhh1p, a putative RNA helicase. Maillet L, Collart MA; J Biol Chem 2002;277:2835-2842. PMID:11696541

2: Structure and assembly of the NOT module of the human CCR4-NOT complex. Boland A, Chen Y, Raisch T, Jonas S, Kuzuoglu-Ozturk D, Wohlbold L, Weichenrieder O, Izaurralde E; Nat Struct Mol Biol. 2013;20:1289-1297. PMID:24121232