Homodimer. Interacts with
ZBED3; the interaction is direct, enhanced by protein kinase
GSK3B and casein kinase
CSNK1E activities and decreases
GSK3B-induced beta-catenin serine and threonine phosphorylations (By similarity). Component of the beta-catenin destruction complex, containing at least,
CTNNB1, an axin and
GSK3B, that regulates
CTNNB1 protein levels through phosphorylation and ubiquitination. Interacts with
CTNNB1 (via the armadillo repeats 2-7). Interacts with
GSK3B; the interaction hyperphosphorylates
CTNNB1 leading to its ubiquitination and destruction. Component of the
AXIN1-
HIPK2-
TP53 complex. Interacts directly in the complex with
TP53 and
HIPK2. Interacts with
DAXX; the interaction stimulates the interaction of
DAXX with
TP53, stimulates 'Ser-46' phosphorylation of
TP53 and induces cell death on UV irradiation. Also binds
APC,
SMAD6,
SMAD7 and
RNF111. Interacts with
DIXDC1; prevents interaction with
MAP3K1. Interacts with
MAP3K4. Interacts with
ANKRD6 and
AIDA (By similarity). Interacts with
MDFI; the interaction decreases
AXIN1-mediated
JUN N-terminal kinase (JNK) activation. Interacts with
MDFIC; the interaction inhibits beta-cateninin-mediated signaling and
AXIN1-mediated
JUN N-terminal kinase (JNK) activation. Interacts with
LRP5 (via its phosphorylated PPPSP motifs); the interaction is stimulated by
WNT1 and
GSK3B and activates beta-catenin signaling. Interacts (via the C-terminal) with
PPP1CA; the interaction dephosphorylates
AXIN1 and regulates interaction with
GSK3B. Interacts with
PPP2CA; the interaction dephosphorylates
AXIN1. Interacts with
MACF1 (By similarity). Found in a complex composed of
MACF1,
APC,
AXIN1,
CTNNB1 and
GSK3B (By similarity). Interacts with
TNKS. Interacts with
DAB2; the interaction is mutually exclusive with the
AXIN1:
PPP1CA interaction.
UniProt