Journal: bioRxiv
Article Title: MeCP2 NID interaction with RNA: Implications for Rett Syndrome-Relevant Protein Regulation
doi: 10.1101/2025.11.19.689340
Figure Lengend Snippet: In the presence of RNA, binding to certain proteins, such as TBLR1 and Sin3a, is limited, however there are other unknown protein complexes to which MeCP2 interacts through, perhaps, scaffolding RNAs that may bind at the RBD, at some other region of the protein, or both. When RNA is degraded, some large complexes disassociate from MeCP2, as indicated from sucrose density ultracentrifugation, but MeCP2’s total protein interactome increases through interactions at the RBD, such as to TBLR1, as shown by IP data. When UV crosslinking is applied to create a covalent link between RNA bound to MeCP2, RNase treatment does not result in the increased interactome or TBLR1 binding as before, but instead obstructs TBLR1 binding, allowing other proteins, like Sin3a, to bind MeCP2 at a domain outside the RBD.
Article Snippet: Primary antibodies used were: MeCP2 (M9317, Sigma®, St. Louis, MO, USA), H4 (rabbit serum produced in-house), Sin3a (ProteinTech 14638-1-AP), TBLR1 (Bethyl, A300-408A), HDAC1 (Santa Cruz Biotechnology, sc-81598).
Techniques: RNA Binding Assay, Scaffolding, Binding Assay