Regulatory subunit of the probable trimeric SNF1-related protein kinase (SnRK) complex, which may play a role in a signal transduction cascade regulating gene expression and carbohydrate metabolism in higher plants. Subunit of a probable heterotrimeric complex consisting of an alpha catalytic (KIN10 or KIN11) subunit, and a beta (KINB) and a gamma (KING or SNF4) non-catalytic regulatory subunits (PubMed:17028154, PubMed:25736509). Interacts with KIN10, KIN11, KINB1, KINB2, KINB3, HSPRO1 AND HSPRO2. Interacts with BZIP63 (PubMed:26263501). Interacts with FLZ2, FLZ8 and FLZ13 (PubMed:29945970). Preferentially expressed in dividing cells, as well as in shoot apex and flower buds, but expressed at a lower level in differentiated tissues of roots, and leaves of rosette and inflorescence. Kinase-interacting sequence (KIS) is required for interaction with KIN10 or KIN11. May be due to an intron retention. Belongs to the 5'-AMP-activated protein kinase gamma subunit family. Truncated N-terminus.