This domain is found in Knl1, a sub-unit of the KMN network, present in Homo sapiens. The KMN network is the core of the outer kinetochore which is responsible for microtubule binding/stabilization and controls the spindle assembly checkpoint. This domain is the second of two RING finger, WD repeat, DEAD-like helicase (RWD) domains. The tandem RWD domains mediate kinetochore targeting of the microtubule-binding subunits by interacting with the Mis12 complex. The Mis12 complex is a KMN sub-complex that tethers directly onto the underlying chromatin layer [1].

1: Modular assembly of RWD domains on the Mis12 complex underlies outer kinetochore organization. Petrovic A, Mosalaganti S, Keller J, Mattiuzzo M, Overlack K, Krenn V, De Antoni A, Wohlgemuth S, Cecatiello V, Pasqualato S, Raunser S, Musacchio A; Mol Cell. 2014;53:591-605. PMID:24530301