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![[Figure 5]](dw5226fig5mag.jpg)
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Figure 5
Degree of twinning and orientation of the tetramer in the P21 unit cell of Mg2+-containing crystals of F. tularensis FBPase. (a) SRF of data collected from crystal A, for which the twinning law was impossible to estimate. (b) SRF from crystal B that was interpreted as two 222 tetramers (axes directions labeled as PQR and P′Q′R′ related by a crystallographic 21 screw axis; horizontal) with a twinning fraction of 0.433 as refined by REFMAC5 (Murshudov et al., 2011  ). The structure was solved and fully refined (PDB entry 7js3). Reproduced with permission from Selezneva et al. (2020). |
![[Figure 5]](dw5226fig5.jpg)
 | STRUCTURAL BIOLOGY |
ISSN: 2059-7983
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