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![[Figure 1]](fg3190fig1mag.jpg)
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Figure 1
(a) The asymmetric unit of (I) ![[link]](../../../../../../logos/arrows/c_arr.gif) , showing the atom-numbering scheme. Displacement ellipsoids (or spheres for O atoms in water molecules with low occupancy) are drawn at the 50% probability level; H atoms are spheres of arbitrary size. (b) Ball-and-stick model of L-His-L-Ser as it appears in the complex with Gly-L-Glu (Suresh & Vijayan, 1985). The CSD entry (refcode DIYZOA; Allen, 2002) does not contain coordinates for H, so H atoms were introduced in idealized positions with the hydroxy group pointing in the direction of the closest acceptor atom. |
![[Figure 1]](fg3190fig1.jpg)
 | STRUCTURAL CHEMISTRY |
ISSN: 2053-2296
