Catalysis of the reaction: a C-19 gibberellin + 2-oxoglutarate + O2 = a C-19 2-beta-hydroxygibberellin + succinate + CO2. C-19 gibberellin refers to a gibberellin with nineteen carbons.
A transcriptional repressor complex that contains the lin-9, lin-35, lin-37, lin-52, lin-53, lin-5is involved in 4-, dpl-1 and efl-1 proteins, and is involved in cell fate specification.