PXD064056-1

PXD064056 is an original dataset announced via ProteomeXchange.

Title	Metaproteomic analysis of pyrenean ice cave.
Description	Glaciers are populated by a large number of microorganisms including bacteria, archaea and microeukaryotes. From an ecological point of view, three ecosystems can be differentiated in glaciers: the supraglacial ecosystem, the subglacial ecosystem and the englacial ecosystem. Several factors such as solar radiation, nutrient availability and water content greatly determine the diversity and abundance of microbial populations, the type of metabolism and the biogeochemical cycles. This huge diversity is threatened by climate change. This sampling place, Sarrios ice cave (Monte Perdido massif, Spanish Pyrenees) host one of the last permafrost deposits. Permafrost can provide us very worthy information about past climate and environmental conditions, therefore it should be studied as soon as possible due to the huge retreat that is already taking place. In order to study their metabolic potentials, samples of ice and permafrost were taken from an Antarctic glacier. The cells were harvested and their proteins were extracted and analyzed by matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI/TOF/TOF). Several proteins and enzymes were found that demonstrate the existence of cellular activity at subzero temperatures. In this way it is shown that the englacial microorganisms are not quiescent, but that they maintain an active metabolism and play an important role in the glacial microbial community.
HostingRepository	PRIDE
AnnounceDate	2026-04-13
AnnouncementXML	Submission_2026-04-12_16:18:47.824.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Eva Garcia
SpeciesList	scientific name: environmental samples; NCBI TaxID: NEWT:48479;
ModificationList	monohydroxylated residue; iodoacetamide derivatized residue
Instrument	autoflex

Revision	Datetime	Status	ChangeLog Entry
0	2025-05-19 03:48:39	ID requested
⏵ 1	2026-04-12 16:18:48	announced

10.3389/fmicb.2026.1802173;

Dudziak RB, Mu, ñ, oz-Hisado V, Hidalgo-Arias A, Mart, í, nez-Carrancho M, Garcia-Lopez E, Fakhouri FM, Martinez-Alonso E, Alc, á, zar A, Sigurbj, ö, rnsd, ó, ttir MA, Fonseca GG, Cid C, reveals early-stage PET biodegradation potential. Front Microbiol, 17():1802173(2026) [pubmed]

submitter keyword: MALDI-TOF MS, culturomics, metaproteomics, ice cave

Cristina Cid Sanchez
contact affiliation	Microbial Evolution Laboratory, Centro de Astrobiologia (CSIC-INTA), 28850 Torrejón de Ardoz, Madrid, Spain
contact email	garciale@cab.inta-csic.es
lab head
Eva Garcia
contact affiliation	ES (+34) 915206455
contact email	garciale@cab.inta-csic.es
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/2026/04/PXD064056

PRIDE project URI

• PRIDE
  1. PXD064056
     1. Label: PRIDE project
     2. Name: Metaproteomic analysis of pyrenean ice cave.