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Figure 7
Cubic crystal of phosphoribulokinase from R. sphaeroides (PDB entry 1a7j) with its channel volume visualized with a cutoff radius of 2.24 Å. (a) The whole unit cell with the main channel. The 24 symmetric copies enclose a sphere of solvent that is only reachable by a small channel with a bottleneck radius of 2.24 Å. (b) The corresponding bottleneck, in which two of the four Ser248 residues are depicted. Images were created with UCSF Chimera (Pettersen et al., 2004BB57).

Journal logoSTRUCTURAL
BIOLOGY
ISSN: 2059-7983
Volume 79| Part 9| September 2023| Pages 837-856
https://doi.org/10.1107/S205979832300582X
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