PXD013488-3

PXD013488 is an original dataset announced via ProteomeXchange.

Title	Organising the cell cycle in the absence transcriptional control: Dynamic phosphorylation co-ordinates the Trypanosoma brucei cell cycle post-transcriptionally
Description	The cell division cycle of the unicellular eukaryote Trypanosome brucei is tightly regulated despite the paucity of transcriptional control that results from the arrangement of genes in polycistronic units and lack of dynamically regulated transcription factors. To identify the contribution of dynamic phosphorylation to T. brucei cell cycle control we have combined cell cycle synchronisation by centrifugal elutriation with SILAC quantitative phosphoproteomic analysis. Cell cycle regulated changes in phosphorylation site abundance (917 sites, average 5-fold change) were more widespread and of a larger magnitude than changes in protein abundance (443 proteins, average 2-fold change) and were mostly independent of each other. Hierarchical clustering of co-regulated phosphorylation sites according to their cell cycle profile revealed a bulk increase in phosphorylation occurs across the cell cycle, with a significant enrichment of known cell cycle regulators and RNA binding proteins (RBPs) within the largest clusters. Cell cycle regulated changes in essential cell cycle kinases is temporally co-ordinated with differential phosphorylation of components of the kinetochore and eukaryotic initiation factors, along with many RBPs not previously linked to the cell cycle such as eight PSP1-C terminal domain containing proteins. The temporal profiles demonstrate the importance of dynamic phosphorylation in co-ordinating progression through the cell cycle, and provides evidence that RBPs play a central role in post-transcriptional gene regulation of the T. brucei cell cycle.
HostingRepository	PRIDE
AnnounceDate	2024-10-22
AnnouncementXML	Submission_2024-10-22_04:55:55.189.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Michael Urbaniak
SpeciesList	scientific name: Trypanosoma brucei; NCBI TaxID: 5691;
ModificationList	phosphorylated residue; monohydroxylated residue; acetylated residue; iodoacetamide derivatized residue
Instrument	LTQ Orbitrap Velos

Revision	Datetime	Status	ChangeLog Entry
0	2019-04-12 07:36:11	ID requested
1	2019-06-13 00:54:18	announced
2	2019-12-13 04:05:59	announced	2019-12-13: Updated publication reference for PubMed record(s): 31830130.
⏵ 3	2024-10-22 04:55:58	announced	2024-10-22: Updated project metadata.

10.1371/journal.ppat.1008129;

Benz C, Urbaniak MD, Organising the cell cycle in the absence of transcriptional control: Dynamic phosphorylation co-ordinates the Trypanosoma brucei cell cycle post-transcriptionally. PLoS Pathog, 15(12):e1008129(2019) [pubmed]

submitter keyword: Trypanosoma brucei, Phosphoproteomics,Cell cycle, SILAC

Michael Urbaniak
contact affiliation	Biomedical & Life Sciences, Lancaster University UK
contact email	m.urbaniak@lancaster.ac.uk
lab head
Michael Urbaniak
contact affiliation	Lancaster University
contact email	m.urbaniak@lancaster.ac.uk
dataset submitter

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PRIDE project URI

• PRIDE
  1. PXD013488
     1. Label: PRIDE project
     2. Name: Organising the cell cycle in the absence transcriptional control: Dynamic phosphorylation co-ordinates the Trypanosoma brucei cell cycle post-transcriptionally