This gene encodes a scaffold protein that functions as a regulatory subunit of protein phosphatase 1a. Expression of this gene is particularly high in dendritic spines, suggesting that the encoded protein may play a role in receiving signals from the central nervous system. The encoded protein has putative tumor suppressor function and decreased expression has been observed in tumors. [provided by RefSeq, Feb 2014]
Forensic Context
A study in human samples identified the PPP1R9B as a candidate marker for nasal mucosa but discarded it from the final multiplex due to cross-reactivity observed in blood and menstrual secretion samples [van den Berge et al. DOI:10.1016/j.fsigen.2015.10.011]. A study in mice demonstrated that following clodronate pre-treatment and controlled cortical impact brain injury, monocytes exhibited a transcriptional shift, including reduced expression of the PPP1R9B which is associated with a non-classical monocyte identity, correlating with a neuroprotective phenotype characterized by reduced cortical pro-inflammatory cytokines, improved blood-brain barrier integrity, and smaller lesion volumes [Gudenschwager Basso et al. DOI:10.1186/s12974-024-03032-8].