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![[Figure 3]](dz5047fig3mag.jpg)
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Figure 3
Examples of the heavy-atom substructure solutions of the bacteriophage φ13 P4 protein single-wavelength anomalous data set obtained from the program SHELXD (Sheldrick & Schneider, 1997  ). (a) The trajectory of correlation coefficients. After approximately 75 iterations, an initial solution [illustrated in (b); correlation coefficient 48.2%] is obtained. After ∼800 cycles a solution with a slightly higher correlation coefficient is found [48.3%; solution shown in (c)]. (b) An early solution in which two out of four hexamers have inverted handedness (grey and red versus blue and green). (c) Correct solution obtained from a later cycle of SHELXD. All hexamers have the same handedness. Only the contents of one crystallographic asymmetric unit (four hexamers) are shown. |
![[Figure 3]](dz5047fig3.jpg)
 | STRUCTURAL BIOLOGY |
ISSN: 2059-7983
