{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nDespite the query’s focus on SNORD115-48, none of the provided abstracts mention or address this small nucleolar RNA. Instead, the collective literature centers on regulators of G protein signaling—with a particular emphasis on the RGS9 isoforms (especially RGS9‐2)—and their roles in accelerating GTP hydrolysis on Gα subunits, thereby finely tuning G protein–coupled receptor (GPCR) signaling. These studies demonstrate that RGS9‐2 is highly enriched in neural tissues such as the striatum and retina, where it modulates dopamine and opioid receptor responses as well as phototransduction kinetics, contributing to the regulation of motor control, reward, sensory processing, and adaptation to chronic drug exposure."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "1", "end_ref": "12"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nAdditional investigations detailed in these abstracts extend the functional impact of RGS9‐2 to the regulation of downstream signaling events and cellular plasticity. These include modulations of receptor internalization, alterations in G protein–effector interactions, posttranslational control through phosphorylation and membrane targeting, as well as contributions to behavioral phenotypes such as analgesia, dyskinesia, and even metabolic effects. Furthermore, several studies document that changes in the expression or the stability of RGS9‐2—and its anchoring partners—are associated with adaptations in neurotransmission under both physiological and pathological conditions, including neuropathic pain and drug-induced dyskinesia."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "13", "end_ref": "26"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nIn summary, while the provided body of work richly delineates the multifaceted contributions of RGS9‐2 and its associated complexes in governing GPCR signal termination and downstream neuronal adaptations, it does not supply any functional insights regarding SNORD115-48. Thus, drawing from these abstracts, no information can be attributed to SNORD115-48—its function remains described elsewhere as typical for small nucleolar RNAs, where it is often implicated in RNA modification and processing events.\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Izabela Sokal, Guang Hu, Yan Liang, et al. 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