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The many faces of Fic: structural and functional aspects of Fic enzymes

Lookup NU author(s): Professor Nikolay ZenkinORCiD


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Fic enzymes post-translationally modify proteins through AMPylation, UMPylation, phosphorylation, or phospho-cholination. They have been identified across all domains of life, and they target a myriad of proteins such as eukaryotic GTPases, unstructured protein segments, and bacterial enzymes. Consequently, they play crucial roles in eukaryotic signal transduction, drug tolerance, bacterial pathogenicity, and the bacterial stress response. Structurally, they consist of an all at-helical core domain that supports and scaffolds a structurally conserved active-site loop, which catalyses the transfer of various parts of a nucleotide cofactor to proteins. Despite their diverse substrates and targets, they retain a conserved active site and reaction chemistry. This catalytic variety came to light only recently with the crystal structures of different Fic enzymes.

Publication metadata

Author(s): Garcia-Pino A, Zenkin N, Loris R

Publication type: Review

Publication status: Published

Journal: Trends in Biochemical Sciences

Year: 2014

Volume: 39

Issue: 3

Pages: 121-129

Print publication date: 05/02/2014

ISSN (print): 0968-0004

ISSN (electronic): 1362-4326



DOI: 10.1016/j.tibs.2014.01.001