Rebuilding of a backward-fitted Leu side chain in KiNG off-line in the DNA polymerase 1xwl
at 1.7 Å resolution (Kiefer et al., 1997). The original (left) fits the density fairly well but is a rotamer outlier with a clash. One of the two best Leu rotamers also fits the density well with good all-atom packing. The top view (right) shows the 180° relationship of the two conformations.