PXD057047-1

PXD057047 is an original dataset announced via ProteomeXchange.

Title	Algae-dominated metaproteomes uncover cellular adaptations to life on the Greenland Ice Sheet
Description	Eukaryotic algae-dominated microbiomes thrive on the Greenland Ice Sheet (GrIS) in harsh environmental conditions, including low temperatures, high light, and low nutrient availability. Chlorophyte algae bloom on snow, while streptophyte algae dominate bare ice surfaces. Empirical data about the cellular mechanisms responsible for their survival in these extreme conditions are scarce. This knowledge gap was addressed by quantifying proteins for both algal taxa from samples on the southern margin of the GrIS. We show that the streptophyte glacier ice algae have a relative enrichment in proteins involved in environmental signaling and nutrient transport, indicative of cellular readiness to dynamically respond to extreme GriS environmental cues, linked, for example, to photoprotection and the rapid update of scarce nutrients. In contrast, the chlorophyte snow algae have a high abundance of proteins linked to lipid and nitrogen metabolisms, providing evidence for the biological processes sustaining the cellular carbon and nitrogen stores necessary for survival in an oligotrophic environment. We also identify proteins in both taxa linked to the synthesis and breakdown of key cellular pigments. Our study gives novel insights into the cellular biology of these algae and their adaptation to extreme environments.
HostingRepository	PRIDE
AnnounceDate	2025-08-21
AnnouncementXML	Submission_2025-08-21_06:10:32.646.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Anke Trautwein-Schult
SpeciesList	scientific name: unclassified Bacteria (miscellaneous); NCBI TaxID: 49928; scientific name: algae metagenome; NCBI TaxID: 1300146;
ModificationList	No PTMs are included in the dataset
Instrument	LTQ Orbitrap Elite

Revision	Datetime	Status	ChangeLog Entry
0	2024-10-22 00:09:55	ID requested
⏵ 1	2025-08-21 06:10:33	announced

10.1038/S41522-025-00770-2;

submitter keyword: Greenland Ice Sheet, Snow Algae, Metaproteomics, Glacier Ice Algae

Dörte Becher
contact affiliation	Institute of Microbiology, Department of Microbial Proteomics, University of Greifswald, Germany
contact email	dbecher@uni-greifswald.de
lab head
Anke Trautwein-Schult
contact affiliation	University of Greifswald
contact email	anke.trautwein-schult@uni-greifswald.de
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/2025/08/PXD057047

PRIDE project URI

• PRIDE
  1. PXD057047
     1. Label: PRIDE project
     2. Name: Algae-dominated metaproteomes uncover cellular adaptations to life on the Greenland Ice Sheet