text: Involved in the earliest step for the formation of the active cleavage complex, the CFIm complex is formed by three proteins of 25, 59 and 68 kDa, respectively:
  *CFIm25 (or CPSF5/NUDT21)
  *CFIm59 (or CPSF7)
  *CFIm68 (or CPSF6)
  CFIm25 and CFIm68 are sufficient for the activity of the complex, proving the expected redundancy of CFIm68 and CFIm59, which share great sequence similarity.