PXD052303

PXD052303 is an original dataset announced via ProteomeXchange.

Title	Phosphoproteomics-directed manipulation reveals SEC22B as an hepatocellular signaling node governing metabolic actions of glucagon
Description	The peptide hormone glucagon is a fundamental metabolic regulator that is also being considered as a pharmocotherapeutic option for obesity and type 2 diabetes. Despite this, we know very little of how glucagon exerts its pleiotropic metabolic actions. Given that the liver is a chief site of action, we conducted in situ time-resolved liver phosphoproteomics to reveal glucagon signaling nodes. On pathway analysis of the thousands of phosphopeptides identified, we identified “vesicle transport” as a dominant signature with the vesicle trafficking protein SEC22 Homolog B (SEC22B) S137 phosphorylation being a top hit. Hepatocyte-specific loss- and gain-of-function experiments revealed that SEC22B was a key regulator of glycogen, lipid and amino acid metabolism, with SEC22B-S137 phosphorylation playing a major role in glucagon action. Mechanistically, we identified several protein binding partners of SEC22B affected by glucagon, some of which were only bound with SEC22B-S137 phosphorylation. In summary, here we demonstrate that phosphorylation of SEC22B is an hepatocellular signaling node mediating the metabolic actions of glucagon, and provide a rich resource for future investigations on the biology of glucagon action.
HostingRepository	PRIDE
AnnounceDate	2024-10-22
AnnouncementXML	Submission_2024-10-22_06:57:03.025.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Terry Lim
SpeciesList	scientific name: Homo sapiens (Human); NCBI TaxID: 9606;
ModificationList	iodoacetamide derivatized residue
Instrument	Q Exactive

Revision	Datetime	Status	ChangeLog Entry
0	2024-05-16 05:24:47	ID requested
1	2024-08-29 18:18:46	announced
⏵ 2	2024-10-22 06:57:03	announced	2024-10-22: Updated project metadata.

Dataset with its publication pending

submitter keyword: Phosphoproteomics,Glucagon, Human cell line

Adam Rose
contact affiliation	Nutrient Metabolism & Signalling Laboratory, Metabolism, Diabetes and Obesity Program, Biomedicine Discovery Institute, Monash University, Victoria 3800, Australia
contact email	adam.rose@monash.edu
lab head
Terry Lim
contact affiliation	Monash University
contact email	terry.lim@monash.edu
dataset submitter

Dataset FTP location NOTE: Most web browsers have now discontinued native support for FTP access within the browser window. But you can usually install another FTP app (we recommend FileZilla) and configure your browser to launch the external application when you click on this FTP link. Or otherwise, launch an app that supports FTP (like FileZilla) and use this address: ftp://ftp.pride.ebi.ac.uk/pride/data/archive/2024/08/PXD052303

PRIDE project URI

• PRIDE
  1. PXD052303
     1. Label: PRIDE project
     2. Name: Phosphoproteomics-directed manipulation reveals SEC22B as an hepatocellular signaling node governing metabolic actions of glucagon