 | Acta Crystallographica Section D Acta Crystallographica Section D BIOLOGICAL CRYSTALLOGRAPHY |
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![[Figure 3]](mh5035fig3mag.jpg)
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Figure 3
Ribbon diagrams of the SaPurB subunit, the dimer and the tetramer. (a) A subunit is depicted and coloured from the N-terminus (blue) to the C-terminus (red). Residues of the subunit interact with three AMP molecules, which are shown in CPK format (C, black; O, red; P, orange). (b) The dimer is formed from two subunits in an antiparallel arrangement. Subunit A is coloured yellow and subunit B is coloured orange. The dimer forms part of four active sites, which are marked by AMP. (c) The active enzyme SaPurB is a tetramer. Subunit C is coloured green and subunit D is coloured purple. |
![[Figure 3]](mh5035fig3.jpg)
| BIOLOGICAL CRYSTALLOGRAPHY |
ISSN: 1399-0047
