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CTCF | GH14774p; CTCF (CTCF) encodes a ubiquitous transcription factor that binds to insulators and domain boundaries. It mediates insulator function and blocks enhancers by binding to the product of Cp190. It contributes to long-range chromatin interaction, organizes chromatin domain boundaries and coordinates nuclear architecture. (818 aa) | ||||
sina | E3 ubiquitin-protein ligase sina; E3 ubiquitin-protein ligase that is required for specification of R7 photoreceptor cell fate in the eye by mediating the ubiquitination and subsequent proteasomal degradation of Tramtrack (ttk). E3 Ubiquitin ligases accept ubiquitin from an E2 ubiquitin-conjugating enzyme in the form of a thioester and then directly transfers the ubiquitin to targeted substrates. Acts via the formation of a complex with ebi and phyl that ubiquitinates the transcription repressor ttk, a general inhibitor of photoreceptor differentiation, in a subset of photoreceptor cel [...] (314 aa) |