This domain family is found in eukaryotes, and is approximately 280 amino acids in length. The family is found in association with Pfam:PF01302. There is a single completely conserved residue E that may be functionally important. Dynactin has been associated with Dynein, a kinesin protein which is involved in organelle transport, mitotic spindle assembly and chromosome segregation. Dynactin anchors Dynein to specific subcellular structures.

1: Phosphorylation by p34cdc2 protein kinase regulates binding of the kinesin-related motor HsEg5 to the dynactin subunit p150. Blangy A, Arnaud L, Nigg EA; J Biol Chem. 1997;272:19418-19424. PMID:9235942