Chapter/Index: Introduction | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Appendix
| Crystals of biological macromolecules can contain rotation symmetries only. Therefore, the possibility of point groups is reduced to the 11 enantiomeric point groups: 1, 2, 3, 4, 6, 222, 32, 422, 622, 23, and 432.
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