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Deciphering a global network of functionally associated post-translational modifications.


ABSTRACT: Various post-translational modifications (PTMs) fine-tune the functions of almost all eukaryotic proteins, and co-regulation of different types of PTMs has been shown within and between a number of proteins. Aiming at a more global view of the interplay between PTM types, we collected modifications for 13 frequent PTM types in 8 eukaryotes, compared their speed of evolution and developed a method for measuring PTM co-evolution within proteins based on the co-occurrence of sites across eukaryotes. As many sites are still to be discovered, this is a considerable underestimate, yet, assuming that most co-evolving PTMs are functionally associated, we found that PTM types are vastly interconnected, forming a global network that comprise in human alone >50,000 residues in about 6000 proteins. We predict substantial PTM type interplay in secreted and membrane-associated proteins and in the context of particular protein domains and short-linear motifs. The global network of co-evolving PTM types implies a complex and intertwined post-translational regulation landscape that is likely to regulate multiple functional states of many if not all eukaryotic proteins.

SUBMITTER: Minguez P 

PROVIDER: S-EPMC3421446 | biostudies-literature | 2012 Jul

REPOSITORIES: biostudies-literature

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Deciphering a global network of functionally associated post-translational modifications.

Minguez Pablo P   Parca Luca L   Diella Francesca F   Mende Daniel R DR   Kumar Runjun R   Helmer-Citterich Manuela M   Gavin Anne-Claude AC   van Noort Vera V   Bork Peer P  

Molecular systems biology 20120717


Various post-translational modifications (PTMs) fine-tune the functions of almost all eukaryotic proteins, and co-regulation of different types of PTMs has been shown within and between a number of proteins. Aiming at a more global view of the interplay between PTM types, we collected modifications for 13 frequent PTM types in 8 eukaryotes, compared their speed of evolution and developed a method for measuring PTM co-evolution within proteins based on the co-occurrence of sites across eukaryotes  ...[more]

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