YY1 and colonic neoplasm: Additionally, Smurf2 degrades: RNF20 (RiNg finger protein 20) that is responsible for histoneH2B ubiquitination; TopoIIα (Topiisomerase IIα) that is involved in chromosomal translocations; SATB1 (AT-rich Sequence-Binding protein 1) that promotes the growth and metastasis of colon cancer; KLF5 (Transcription factor-Krüppel-like factor 5) that promotes colon and bladder cell proliferation; and YY1 (Yin Yang 1) that is a Krüppel-like zinc finger transcriptional factor expressed in various cancers [149].