Figure 2.
Figure 2 (a) Precise alignment of the substrates in the active
site as revealed by the 2F[o] - F[c] electron-density map
contoured at 3 .
(b) The in-line transfer of the phosphoryl group and the
hydrogen-bond geometry between O[ 1]
of ADP and O[1] of nitrate. Angles in parentheses correspond to
the optimal reaction trajectory (Zhou et al., 1998[Zhou, G.,
Somasundaram, T., Blanc, E., Parthsarathy, G., Ellington, W. R.
& Chapman, M. S. (1998). Proc. Natl Acad. Sci. USA, 95,
8449-8454.]).
.
(b) The in-line transfer of the phosphoryl group and the
hydrogen-bond geometry between O[ 
1]
of ADP and O[1] of nitrate. Angles in parentheses correspond to
the optimal reaction trajectory (Zhou et al., 1998[Zhou, G.,
Somasundaram, T., Blanc, E., Parthsarathy, G., Ellington, W. R.
& Chapman, M. S. (1998). Proc. Natl Acad. Sci. USA, 95,
8449-8454.]).