The RNF212 antibody is a polyclonal or monoclonal antibody designed to detect and localize the RNF212 protein, a meiosis-specific E3 ubiquitin ligase essential for crossover regulation. It enables researchers to visualize RNF212's dynamic localization on synaptonemal complexes (SCs) during prophase I of meiosis and investigate its interactions with recombination machinery .
Used to track RNF212's localization during meiotic stages in mouse spermatocytes and oocytes.
Revealed RNF212's association with early recombination sites and synaptonemal complexes (e.g., colocalization with SYCP1 and SYCP3) .
Confirmed RNF212 protein expression levels in testis extracts, including its interdependence with paralog RNF212B for stability .
Crossover Control: RNF212 stabilizes MutSγ complexes at recombination sites, enabling crossover formation. Loss of RNF212 abolishes crossovers .
Interdependence with RNF212B: Both proteins require mutual interaction for stability and chromosomal localization. Disruption of either reduces crossover rates .
Antagonism with HEI10: HEI10 (E3 ubiquitin ligase) counteracts RNF212 by promoting MutSγ removal, restricting crossovers to 1–2 per chromosome .
Specificity: Confirmed via immunoblotting in Rnf212 and Rnf212b knockout mice, showing reduced protein levels .
Super-Resolution Imaging: Structured illumination microscopy (SIM) resolved RNF212’s precise localization along SCs .
Colocalization Studies: Demonstrated overlap with γH2AX (DNA damage marker) in Sycp1−/− mutants but not wild-type cells .
The RNF212 antibody has been pivotal in elucidating: