Catalyzes the covalent attachment of the prokaryotic ubiquitin-like protein modifier Pup to the proteasomal substrate proteins, thereby targeting them for proteasomal degradation. This tagging system is termed pupylation. The ligation reaction involves the side-chain carboxylate of the C-terminal glutamate of Pup and the side-chain amino group of a substrate lysine.

Belongs to the Pup ligase/Pup deamidase family. Pup-conjugating enzyme subfamily.

447 amino acids

MGIETEFGVTCTFHGHRRLSPDEVARYLFRRVVSWGRSSNVFLRNGARLYLDVGSHPEYATAECDSLIQLVNHDRAGERVLEELLIDAEARLAEEGIGGDIYLFKNNTDSAGNSYGCHENFLVARAGEFSRISDVLLPFLVTRQLICGAGKVLQTPKAATFCLSQRAEHIWEGVSSATTRSRPIINTRDEPHADAEKYRRLHVIVGDSNMAETTTMLKVGSAALVLEMIEAGVSFRDFALDNPIRAIREVSHDVTGKKPVRLAGGRQASALDIQREYHAKAVEHLRNREPDPQVEQVVDLWGRTLDAVEAQDFAKVDTEIDWVIKRKLFQRYQDRHGFDLSDPKIAQLDLAYHDIKRGRGVFDVLQRKGLVKRVTEDETIDDAVENPPQTTRAKLRGDFITAAQAAGRDFTVDWVHLKLNDQAQRTVLCKDPFRSVDERVERLIASM

50.3 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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