Protein Domain : RING1 , RING finger, HC subclass IPR042741

Type	Domain
Description	RING1 is a transcriptional repressor associated with the Polycomb group (PcG) protein complex involved in stable repression of gene activity. It is a core component of polycomb repressive complex 1 (PRC1) that functions as an E3-ubuiquitin ligase that transferring the mono-ubuiquitin mark to the C-terminal tail of Histone H2A at K118/K119 [ ]. PRC1 is also capable of chromatin compaction, a function not requiring histone tails, and this activity appears important in gene silencing []. RING1 interacts with multiple PcG proteins and displays tumorigenic activity[ ]. It also shows zinc-dependent DNA binding activity. Moreover, RING1 inhibits transactivation of the DNA-binding protein recombination signal binding protein-Jkappa (RBP-J) by Notch through interaction with the LIM domains of KyoT2 []. RING1 contains a C3HC4-type RING-HC finger [].
Short Name	RING1_RING-HC