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 (PubMed:24600465). Negatively regulates KIN10 leading to a repression of the SnRK1 signaling pathway (PubMed:29406622). Interacts with KIN10 and KIN11 via its FLZ-type zinc finger domain (PubMed:24600465, PubMed:29945970, PubMed:29406622). Interacts with KINB1, KINB2 and KINB3 via its N-terminal part (PubMed:29945970). Forms homodimer and heterodimer with FLZ2 and FLZ12 in vitro (PubMed:29945970). Co-localized with ER marker when associated with KIN11. Early expressed in hypocotyl and cotyledon and preferentially in the stelar region of the shoot and root. Later expressed in root-shoot junction, lateral root, old or senescing leaves and in pistil and pollen of flower buds or open flowers. Up-regulated in response to mild as well as prolonged energy depletion (PubMed:26442059, PubMed:29406622). Up-regulated by the glycolysis inhibitor 2DG (PubMed:29406622). Induced by NaCl (PubMed:26442059). Induced by abscissic acid (ABA) (PubMed:29406622). Reduced biomass and lateral roots and shorter primary roots. Belongs to the FLZ family.