This domain is found in GSK3-beta interaction protein (GSKIP), which binds to GSK3beta [1]. It is also found as a short domain towards the N terminus in clustered mitochondria protein, also known as clueless in Drosophila, which is involved in proper cytoplasmic distribution of mitochondria [2,3,4].

1: GSKIP is homologous to the Axin GSK3beta interaction domain and functions as a negative regulator of GSK3beta. Chou HY, Howng SL, Cheng TS, Hsiao YL, Lieu AS, Loh JK, Hwang SL, Lin CC, Hsu CM, Wang C, Lee CI, Lu PJ, Chou CK, Huang CY, Hong YR; Biochemistry. 2006;45:11379-11389. PMID:16981698

2: Clueless, a conserved Drosophila gene required for mitochondrial subcellular localization, interacts genetically with parkin. Cox RT, Spradling AC; Dis Model Mech. 2009;2:490-499. PMID:19638420

3: The genetic control of plant mitochondrial morphology and dynamics. Logan DC, Scott I, Tobin AK; Plant J. 2003;36:500-509. PMID:14617080

4: The S. cerevisiae CLU1 and D. discoideum cluA genes are functional homologues that influence mitochondrial morphology and distribution. Fields SD, Conrad MN, Clarke M; J Cell Sci. 1998;111:1717-1727. PMID:9601101