Crystal structure of the complex between prokaryotic ubiquitin-like protein and its ligase PafA.
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Barandun J, Delley CL, Ban N, Weber-Ban E
J. Am. Chem. Soc. 135 (18) 6794-6797 [2013-05-08; online 2013-04-23]
Prokaryotic ubiquitin-like protein (Pup) is covalently attached to target proteins by the ligase PafA, tagging substrates for proteasomal degradation. The crystal structure of Pup in complex with PafA, reported here, reveals that a long groove wrapping around the enzyme serves as a docking site for Pup. Upon binding, the C-terminal region of the intrinsically disordered Pup becomes ordered to form two helices connected by a linker, positioning the C-terminal glutamate in the active site of PafA.
PubMed 23601177
DOI 10.1021/ja4024012
Crossref 10.1021/ja4024012