| 4I6E | A:21-223 | A VERTEBRATE CRYPTOCHROME |
| 4I6G | A:21-223; B:21-223 | A VERTEBRATE CRYPTOCHROME WITH FAD |
| 4I6J | A:21-225 | A UBIQUITIN LIGASE-SUBSTRATE COMPLEX |
| 4MLP | A:21-223; B:21-223; C:21-223; D:21-223 | MAMMALIAN CRYPTOCHROME IN COMPLEX WITH A SMALL MOLECULE COMPETITOR OF ITS UBIQUITIN LIGASE |