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Figure 5.
Figure 5. Solution structure of human U1C. A, Stereo ribbon
representation of the lowest-energy structure. A blue arrow
indicates the b-strands and a red coil indicates the helical
region. Some aromatic residues including the two tyrosine
residues (Y5 and Y12) on the b-strands as well as the
Zn-coordinating residues (Cys6, Cys9, His24 and His30) are
indicated. B, The surface representation of U1C with surface
electrostatic potential. The surface formed by the three
a-helices displays many positively charged amino acid residues.
Blue, positively charged; red, negatively charged. C, The
b-strand surface rich in aromatic and negatively charged amino
acid residues. Figures were drawn using MOLSCRIPT[53.] and
GRASP. [54.]
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