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![[Figure 4]](cb5113fig4mag.jpg)
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Figure 4
(a) Hbu-Rubisco is a monomer in the asymmetric unit, but the dimeric arrangement can be formed using symmetry operations, with the dashed line indicating the dimer interface. Unlike Tko-Rubisco and Mbu-Rubisco, Hbu-Rubisco does not assemble into decamers, but the location of the equivalent decameric interface is indicated by a grey box. (b) Overlaying the structure of Hbu-Rubisco (red) with those of Mbu-Rubisco (yellow) and Tko-Rubisco (blue) shows that the overall fold is highly conserved, with Mbu-Rubisco having an insertion near the C-terminus (bottom left) which acts as an assembly domain. (c) Residues that are involved in forming salt bridges at the decameric interface are shown for Mbu-Rubisco and Tko-Rubisco. These residues are not conserved in the Hbu-Rubisco structure, which includes proline and tryptophan at some of the equivalent positions and would not be able to form electrostatic interactions. |
![[Figure 4]](cb5113fig4.jpg)
 | STRUCTURAL BIOLOGY |
ISSN: 2059-7983
