RIF2 is involved in transcriptional silencing and telomere length regulation [1]. It belongs to the ATPase family associated with diverse cellular activities. This domain represents the alpha-helical AAA+ lid domain described in [1].

1: Rif1 and Rif2 shape telomere function and architecture through multivalent Rap1 interactions. Shi T, Bunker RD, Mattarocci S, Ribeyre C, Faty M, Gut H, Scrima A, Rass U, Rubin SM, Shore D, Thoma NH; Cell. 2013;153:1340-1353. PMID:23746845