cd16560: RING-HC_RNF212_like (this model, PSSM-Id:319474 is obsolete and has been replaced by 438222)
RING finger, HC subclass, found in RING finger proteins RNF212, RNF212B and similar proteins
The family includes RING finger protein RNF212, RNF212B, and their homologs. RNF212 is a dosage-sensitive regulator of crossing-over during mammalian meiosis. It plays a central role in designating crossover sites and coupling chromosome synapsis to the formation of crossover-specific recombination complexes. It also functions as an E3 ligase for small ubiquitin-related modifier (SUMO) modification. RNF212B shows high sequence similarity with RNF212, but its biological function remains unclear. Members in this family contain an N-terminal C3HC4-type RING-HC finger. The family also includes two homologs of RNF212, meiotic procrossover factors Zip3 and ZHP-3, which have been identified in Saccharomyces cerevisiae and Caenorhabditis elegans, respectively. Budding yeast Zip3 is a small ubiquitin-related modifier (SUMO) E3 ligase implicated in the SUMO pathway of post-translational modification. It sumoylates chromosome axis proteins, thus promoting synaptonemal complex polymerization. It also acts as a Smt3 E3 ligase. Zip3 includes a SUMO Interacting Motif (SIM) and a modified C3HCHC2-type RING-HC finger that are important for Zip3 in vitro E3 ligase activity and necessary for SC polymerization and correct sporulation. ZHP-3 acts at crossovers to couple meiotic recombination with synaptonemal complex disassembly and chiasma formation in Caenorhabditis elegans. It possess a C3HC4-type RING-HC finger.
Jiyao W et al.(2023). "The conserved domain database in 2023.",