{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nThe provided abstracts collectively examine the roles of protein phosphatase 1 (PP1) isoforms and their regulatory partners—such as PPP1R11, PPP1R7, and Tctex5—in processes ranging from spermatogenesis and sperm maturation to immune responses mediated by TLR2. For example, one study demonstrates that in wild‐type testis, PP1γ2 forms an inactive complex with actin, PPP1R7, and the potent inhibitor PPP1R11, suggesting that this interaction prevents PPP1R11 proteolysis and consequently, germ cell apoptosis; conversely, altered levels of PP1γ2 in various genetic contexts correlate with changes in PPP1R11 and mature sperm production."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": " In another investigation, PPP1R11 is identified as a RING finger E3 ligase that ubiquitinates TLR2, thereby promoting its degradation and modulating inflammation in response to gram‐positive bacteria."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "2"}]}, {"type": "t", "text": " Further studies have detailed the testis‐specific expression and dynamic association of PP1 inhibitors (PPP1R2, PPP1R7, and PPP1R11) during sperm maturation, as well as the cellular localization of Tctex5—a protein functionally analogous to PPP1R11—in spermatogenic and somatic cells"}, {"type": "fg", "children": [{"type": "fg_f", "ref": "3"}]}, {"type": "t", "text": ";."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "4"}]}, {"type": "t", "text": " \n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nNotably, despite the inquiry regarding the function of MIR4646, none of the abstracts provided mention or address MIR4646. Thus, while these studies offer valuable insights into PP1-mediated regulation in testicular physiology and innate immunity, they do not contain any information on the function of MIR4646."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "5"}]}, {"type": "t", "text": "\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Lina Cheng, Stephen Pilder, Angus C Nairn, et al. "}, {"type": "b", "children": [{"type": "t", "text": "PP1gamma2 and PPP1R11 are parts of a multimeric complex in developing testicular germ cells in which their steady state levels are reciprocally related."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "PLoS One (2009)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1371/journal.pone.0004861"}], "href": "https://doi.org/10.1371/journal.pone.0004861"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "19300506"}], "href": "https://pubmed.ncbi.nlm.nih.gov/19300506"}]}, {"type": "r", "ref": 2, "children": [{"type": "t", "text": "Alison C McKelvey, Travis B Lear, Sarah R Dunn, et al. "}, {"type": "b", "children": [{"type": "t", "text": "RING finger E3 ligase PPP1R11 regulates TLR2 signaling and innate immunity."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Elife (2016)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.7554/eLife.18496"}], "href": "https://doi.org/10.7554/eLife.18496"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "27805901"}], "href": "https://pubmed.ncbi.nlm.nih.gov/27805901"}]}, {"type": "r", "ref": 3, "children": [{"type": "t", "text": "Suranjana Goswami, Luís Korrodi-Gregório, Nilam Sinha, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Regulators of the protein phosphatase PP1γ2, PPP1R2, PPP1R7, and PPP1R11 are involved in epididymal sperm maturation."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "J Cell Physiol (2019)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1002/jcp.27130"}], "href": "https://doi.org/10.1002/jcp.27130"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "30144392"}], "href": "https://pubmed.ncbi.nlm.nih.gov/30144392"}]}, {"type": "r", "ref": 4, "children": [{"type": "t", "text": "Y B Han, H L Feng, C K Cheung, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Expression of a novel T-complex testis expressed 5 (Tctex5) in mouse testis, epididymis, and spermatozoa."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Mol Reprod Dev (2007)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1002/mrd.20631"}], "href": "https://doi.org/10.1002/mrd.20631"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "17342733"}], "href": "https://pubmed.ncbi.nlm.nih.gov/17342733"}]}, {"type": "r", "ref": 5, "children": [{"type": "t", "text": "Adrian E Boström, Diana-Maria Ciuculete, Misty Attwood, et al. "}, {"type": "b", "children": [{"type": "t", "text": "A MIR4646 associated methylation locus is hypomethylated in adolescent depression."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "J Affect Disord (2017)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1016/j.jad.2017.05.017"}], "href": "https://doi.org/10.1016/j.jad.2017.05.017"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "28618313"}], "href": "https://pubmed.ncbi.nlm.nih.gov/28618313"}]}]}]}