PXD033125

PXD033125 is an original dataset announced via ProteomeXchange.

Title	GRAMD1C regulates autophagy initiation and mitochondrial bioenergetics
Description	During autophagy, cytosolic cargo is sequestered into double-membrane vesicles called autophagosomes. The origin and identity of the membranes that form the autophagosome remain to be fully characterized. Here, we investigated the role of cholesterol in starvation-induced autophagy and identify a role for the ER-localized cholesterol transport protein GRAMD1C in the regulation of autophagy and mitochondrial function. We demonstrate that cholesterol depletion leads to a rapid induction of autophagy and a corresponding increased abundance of curved autophagy membranes. We further show that GRAMD1C is a negative regulator of starvation-induced autophagy. Similar to its yeast orthologue, GRAMD1C is recruited to mitochondria through its GRAM domain. Additionally, we find that GRAMD1C depletion leads to increased mitochondrial cholesterol accumulation and mitochondrial oxidative phosphorylation. Finally, we demonstrate that expression of GRAM family genes is linked to clear cell renal carcinoma survival, highlighting the pathophysiological relevance of cholesterol transport proteins.
HostingRepository	PRIDE
AnnounceDate	2022-10-19
AnnouncementXML	Submission_2022-10-18_22:23:51.177.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	TuulaNyman
SpeciesList	scientific name: Homo sapiens (Human); NCBI TaxID: 9606;
ModificationList	No PTMs are included in the dataset
Instrument	Q Exactive HF

Revision	Datetime	Status	ChangeLog Entry
0	2022-04-08 13:50:58	ID requested
⏵ 1	2022-10-18 22:23:51	announced

Dataset with its publication pending

submitter keyword: GRAMD1C, MBCD, Autophagy, GRAM, Cholesterol

TuulaNyman
contact affiliation	Head of Proteomics
contact email	tuula.nyman@medisin.uio.no
lab head
TuulaNyman
contact affiliation	University of Oslo
contact email	tuula.nyman@medisin.uio.no
dataset submitter

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PRIDE project URI

• PRIDE
  1. PXD033125
     1. Label: PRIDE project
     2. Name: GRAMD1C regulates autophagy initiation and mitochondrial bioenergetics