Abstract:
:Lysine crotonylation (Kcr) is a recently discovered post-translational modification that potentially regulates multiple biological processes. With an objective to expand the available crotonylation datasets, LC-MS/MS is performed using mouse liver samples under normal physiological conditions to obtain in vivo crotonylome. A label-free strategy is used and 10 034 Class I (localization probabilities > 0.75) crotonylated sites are identified in 2245 proteins. The KcrE, KcrD, and EKcr motifs are significantly enriched in the crotonylated peptides. The identified crotonylated proteins are mostly enzymes and primarily located in the cytoplasm and nucleus. Functional enrichment analysis based on Gene Ontology and Kyoto Encyclopedia of Genes and Genomes shows that the crotonylated proteins are closely related to the purine-containing compound metabolic process, ribose phosphate metabolic process, carbon metabolism pathway, ribosome pathway, and a series of metabolism-associated biological processes. To the best of the authors' knowledge, this research provides the first report on the mouse liver crotonylome. Furthermore, it offers additional evidence that crotonylation exists in non-histone proteins, and is likely involved in various biological processes. The mass spectrometry proteomics data have been deposited in the ProteomeXchange Consortium with the dataset identifiers PXD019145.
journal_name
Proteomicsjournal_title
Proteomicsauthors
Liu JF,Wu SF,Liu S,Sun X,Wang XM,Xu P,Chen HZ,Yang JTdoi
10.1002/pmic.202000049subject
Has Abstractpub_date
2020-10-01 00:00:00pages
e2000049issue
19-20eissn
1615-9853issn
1615-9861journal_volume
20pub_type
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