 | Acta Crystallographica Section D Acta Crystallographica Section D BIOLOGICAL CRYSTALLOGRAPHY |
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![[Figure 4]](ba5090fig4mag.jpg)
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Figure 4
The size of crystal-packing interfaces. Distribution of the interface area B of 1320 pairs of molecules in crystals of monomeric proteins analyzed by Janin & Rodier (1995  ). The average is B = 570 Å2. Interfaces with values of B comparable to those found in protein–protein complexes (B > 800 Å2) occur mostly in crystals with twofold symmetry; they form `crystal dimers' that may be mistaken for real homodimers. In crystals with no twofold symmetry, the number of packing interfaces with B > 800 Å2 follows an extreme value distribution, approximated here by the red line (Janin, 1997). The boxed region includes 103 crystal dimers and 85 other large crystal-packing interfaces whose properties may be compared with those of the interfaces in complexes and homodimers (Bahadur et al., 2004). |
![[Figure 4]](ba5090fig4.jpg)
| BIOLOGICAL CRYSTALLOGRAPHY |
ISSN: 1399-0047
