The structure of His-tagged Geobacillus stearothermophilus purine nucleoside phosphorylase reveals a `spanner in the works'

Given, F.M.; Moran, F.; Johns, A.S.; Titterington, J.A.; Allison, T.M.; Crittenden, D.L.; Johnston, J.M.

doi:10.1107/S2053230X22011025

Acta Crystallographica Section F
Acta Crystallographica
Section F STRUCTURAL BIOLOGY COMMUNICATIONS

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Figure 2
The structure of His-GsePNPase. (a) The hexameric biological unit of PNPase. The asymmetric unit contains one-and-a-half dimers (subunits a–c) and the hexamer is generated by a twofold symmetry operation that produces subunits a′–c′. (b) The tertiary structure of a His-GsePNPase subunit. Secondary-structure elements are labelled and helices are coloured blue, β-sheets yellow and loop regions white. The portion of the structure corresponding to the N-terminal tag is coloured green and features a 3₁₀-helix (3₁₀1).

STRUCTURAL BIOLOGY
COMMUNICATIONS

ISSN: 2053-230X

Volume 78| Part 12| December 2022| Pages 416-422

https://doi.org/10.1107/S2053230X22011025

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