The function of SACK1D (scaffolding CK1 anchoring protein D, ENSG00000101447) is as follows. Through the degradation of FBXW7, may act indirectly on the expression and downstream signaling of MTOR, JUN and MYC (PubMed:24344117). May play also a role in cell proliferation through activation of the ERK1/ERK2 signaling cascade (PubMed:25646692). May also be important for proper chromosome congression and alignment during mitosis through its interaction with KIF22 (PubMed:18485706). {ECO:0000269|PubMed:18485706, ECO:0000269|PubMed:24344117, ECO:0000269|PubMed:25646692}.