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. Author manuscript; available in PMC: 2013 Dec 18.
Published in final edited form as: Nature. 2006 Nov 26;444(7121):10.1038/nature05363. doi: 10.1038/nature05363

Figure 1. Structures of human CPSF-73 and yeast CPSF-100 (Ydh1p).

Figure 1

a, Schematic representation of the structure of human CPSF-73. The β-strands and α-helices are labeled, and the two zinc atoms in the active site are shown as gray spheres. The sulfate ion is shown as a stick model. b, Schematic representation of the structure of yeast CPSF-100. The zinc atoms in the CPSF-73 structure are shown for reference.