May act as an adapter to facilitate the interaction of SnRK1 complex with effector proteins, conferring tissue- and stimulus-type specific differences in the SnRK1 regulation pathway. Interacts with KIN10 and KIN11 via its FLZ-type zinc finger domain (PubMed:29945970). Forms heterodimer with FLZ2 in vitro (PubMed:29945970). Up-regulated in response to prolonged energy depletion (PubMed:26442059). Down-regulated by glucose, sucrose and mannose (PubMed:26442059). Induced by NaCl and abscissic acid (ABA) (PubMed:26442059). Belongs to the FLZ family.