Figure 1.
Figure 1. Schematic representations of the crystal structure of
HN. The chains are colored from blue at the N-terminus
through to red at the C-terminus. The N-linked carbohydrate
residues are shown in ball and stick representation, and the
divalent metal ions are drawn as gray spheres. a, The HN dimer
observed in the orthorhombic crystal form, viewed down the NCS
two-fold axis showing the location of the -anomer
of sialic acid drawn as a space filling molecule. b, The dimer
of the HN -Neu5Ac2en complex observed in the hexagonal crystal
form, viewed down the NCS two-fold axis. c, The image in (b)
rotated by 45° around a horizontal axis and colored according to
B-factor conveniently reveals orthogonal views of the HN
monomer. Coloring is from dark blue (B = 10 Å2) to deep red (B =
60 Å2).
The above figure is reprinted
by permission from Macmillan Publishers Ltd:
Nat Struct Biol
(2000,
7,
1068-1074)
copyright 2000.
-anomer
of sialic acid drawn as a space filling molecule. b, The dimer
of the HN -Neu5Ac2en complex observed in the hexagonal crystal
form, viewed down the NCS two-fold axis. c, The image in (b)
rotated by 45° around a horizontal axis and colored according to
B-factor conveniently reveals orthogonal views of the HN
monomer. Coloring is from dark blue (B = 10 Å2) to deep red (B =
60 Å2).