{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nMRFAP1L2 appears to be functionally connected to chromatin‐remodeling complexes that govern cell type–specific gene repression. In neuronal progenitors, for example, components analogous to MRFAP1L2—such as BRAF35, a member of the LSD1–CoREST histone demethylase complex—are critically regulated via post‐translational modifications (sumoylation) to enforce repression of neuronal genes in nonneuronal tissues. Sumoylation of BRAF35 is essential for its association with the complex and for blocking neurogenic differentiation, while its heterodimerization with a closely related paralogue (iBRAF) counteracts this repressive function by disrupting complex recruitment."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": "\n \nIn addition, studies have demonstrated that proteins interacting with the CoREST regulatory machinery share overlapping roles in chromatin dynamics. For instance, β‐dystrobrevin serves as a scaffold by interacting with high mobility group (HMG) proteins such as iBRAF/HMG20a and BRAF35/HMG20b. These interactions help mediate REST‐dependent transcriptional repression, as evidenced by the inhibition of promoters for key neuronal markers, suggesting that proteins related to MRFAP1L2 may similarly influence neuronal differentiation through coordinated chromatin modulation."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "2"}]}, {"type": "t", "text": "\n \nMoreover, within erythroblasts the CoREST complex is recruited by transcription factors like Gfi1b to target gene promoters, and the involvement of HMG20 proteins (such as HMG20b) as integral subunits underlines a broader role for these factors in cell differentiation. Although the precise role of HMG20b in erythropoiesis remains to be fully elucidated, its association with the complex reinforces a model in which proteins akin to MRFAP1L2 participate in regulating gene expression programs across diverse lineages."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "3"}]}, {"type": "t", "text": "\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "María Ceballos-Chávez, Sabrina Rivero, Pablo García-Gutiérrez, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Control of neuronal differentiation by sumoylation of BRAF35, a subunit of the LSD1-CoREST histone demethylase complex."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Proc Natl Acad Sci U S A (2012)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1073/pnas.1121522109"}], "href": "https://doi.org/10.1073/pnas.1121522109"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "22570500"}], "href": "https://pubmed.ncbi.nlm.nih.gov/22570500"}]}, {"type": "r", "ref": 2, "children": [{"type": "t", "text": "Benedetta Artegiani, Catherine Labbaye, Antonella Sferra, et al. "}, {"type": "b", "children": [{"type": "t", "text": "The interaction with HMG20a/b proteins suggests a potential role for beta-dystrobrevin in neuronal differentiation."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "J Biol Chem (2010)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1074/jbc.M109.090654"}], "href": "https://doi.org/10.1074/jbc.M109.090654"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "20530487"}], "href": "https://pubmed.ncbi.nlm.nih.gov/20530487"}]}, {"type": "r", "ref": 3, "children": [{"type": "t", "text": "Fatemehsadat Esteghamat, Thamar Bryn van Dijk, Harald Braun, et al. "}, {"type": "b", "children": [{"type": "t", "text": "The DNA binding factor Hmg20b is a repressor of erythroid differentiation."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Haematologica (2011)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.3324/haematol.2011.045211"}], "href": "https://doi.org/10.3324/haematol.2011.045211"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "21606163"}], "href": "https://pubmed.ncbi.nlm.nih.gov/21606163"}]}]}]}