Aging proteomics repository / PXD067102

Young and aged T cells LC-MS/MS

PXD067102 · PRIDE record

Generated summary PXD067102 is a DDA label-free dataset (Mus musculus) with 12 runs, 12 samples and no enrichment step (whole proteome). It was reanalysed with MetaMorpheus 1.1.12. At 1% FDR the search reports 1,510,240 PSMs, 48,026 peptidoforms and 5,016 protein groups, and the repository holds 45,258 PTM sites for it. 6 open warnings about it are recorded.
Written from catalog fields only (D17), with no model involved. It says nothing the tables below do not.

Open findings

Recorded against this dataset: 0 errors, 6 warnings and 2 for information

count_mismatch warning
The bundle holds 48026 where the producer reported 48006 (results.txt: All target peptides with q-value <= 0.01). Both numbers are kept; treat the producer's as canonical until the difference is explained.
count_mismatch warning
The bundle holds 1.51024e+06 where the producer reported 1.5105e+06 (results.txt: All target PSMs with q-value <= 0.01 (pxreprise:DEF-PSM-1PCT v1)). Both numbers are kept; treat the producer's as canonical until the difference is explained.
high_contamination warning
47.42% of protein intensity in the worst file, 12.99% median across 12 files (DEF-QC-9 v3.5)
occupancy_not_stored warning
Of 157907 occupancy entries MetaMorpheus wrote, some are not in ptm_stoichiometry: 9927 site not in ptm_sites. 'site not in ptm_sites' means the entry's site has no ptm_sites row to key on; 'not determinable' means a cell's segments could not be assigned to its accessions from the sequences (QuantProject DEF-OCC-ACCESSION), which is never guessed. Absence of a row for these sites is therefore not NA. A 'duplicate' is a second entry for a (site, run) that already has a row: one with identical values loses nothing; one with DIFFERENT values means MetaMorpheus wrote two answers and the first in file order was stored (examples in bundle.json occupancy.differing_duplicates; which one should be stored is QuantProject's to define).
sdrf_uncoded warning
The deposited SDRF describes its samples only as text with no ontology term, so the curated organism part, cell type, disease and individual columns are empty. The text is in sample_characteristics: organism part: Spleen. Match on it as text; it has not been mapped to a term.
unplaced_ptm_sites warning
Some modifications on peptides shared between proteins were not written to ptm_sites for one or more of those proteins, because the peptide could not be located in that protein's sequence and the producer's residue spans cannot be paired with its accessions. Of the (PSM, protein) pairs affected: 7919 named a protein that does not contain the stored peptide -- typically a PSM ambiguous between peptide sequences (level 4 or 5), where this protein carries a different candidate than the first, which is the one stored. Sites on the other proteins of the same PSMs are written. Counts are in bundle.json under protein_databases.
collapsed_duplicate_rows info
The producer wrote some rows more than once, identical in every column, and the copies were dropped so each identifier appears once. Nothing was lost: the kept row is byte-for-byte what the duplicates said. Rows that share an identifier and disagree anywhere are still refused rather than collapsed. protein_groups: 9 identifier(s), 12 row(s) dropped, e.g. PXD067102:A0A075B5T6;A0A0B4J1J6 written 2 times; quant_values: 109 identifier(s), 145 row(s) dropped, e.g. PXD067102:Seq67863_HFX_Young_0hr_Day1:label_free:protein_group:PXD067102:A0A075B5T6;A0A0B4J1J6:QuantProject:DEF-PROT-SPC written 2 times. The full list is in bundle.json under collapsed_duplicates.
occupancy_decoy_groups info
174 occupancy entries on decoy protein groups were not stored: MetaMorpheus computes them, and they are FDR machinery, not biology.

What was found

PSMs at 1% FDR1,510,240
Peptidoforms at 1% FDR48,026
Protein groups at 1% FDR5,016
PTM sites45,258
Quantitative values569,630
PSMs, all (including decoys and sub-threshold)4,362,862
MS2 identification rate (pxreprise:DEF-ID-RATE)60.4%
Contaminant share of PSMs (pxreprise:DEF-CONTAM-PSM)12.6%

How it was measured

Organism searched
Mus musculus (the protein database's organism, not a statement about the samples)
Acquisition
DDA
Quantification
label_free
Labelling
none
Enrichment
none
Instrument vendor
Thermo
Runs / samples
12 / 12
Sample metadata
trusted
Search engine
MetaMorpheus 1.1.12
Protein database
UP000000589_all_genecentric_2026_03_agingPTM-v3.xml
Pipeline commit
0ba5e4c3fd33

Modifications

Search engine's nameUNIMODSites
Carbamidomethyl on CUNIMOD:412,283
Oxidation on MUNIMOD:354,836
Deamidation on NUNIMOD:73,118
Carbamyl on KUNIMOD:52,333
Carbamyl on XUNIMOD:52,312
Deamidation on QUNIMOD:72,170
Fe[III] on EUNIMOD:18701,149
Fe[III] on DUNIMOD:1870916
Citrullination on RUNIMOD:7882
Hydroxylation on PUNIMOD:35735
Fe[II] on EUNIMOD:952477
Ammonia loss on NUNIMOD:385424
Fe[II] on DUNIMOD:952411
Hydroxylation on NUNIMOD:35410
Sodium on EUNIMOD:30388
Carbamyl on MUNIMOD:5344
N-acetylalanine on AUNIMOD:1340
Methylation on KUNIMOD:34320
Sodium on DUNIMOD:30310
Hydroxylation on KUNIMOD:35301
Acetylation on KUNIMOD:1288
N6-acetyllysine on KUNIMOD:1262
Carbamyl on RUNIMOD:5247
Ammonia loss on CUNIMOD:385242
Phosphoserine on SUNIMOD:21233
Acetylation on XUNIMOD:1226
Magnesium on EUNIMOD:956220
GG (Ubiquitination Site) on KUNIMOD:121201
Magnesium on DUNIMOD:956182
Carboxylation on KUNIMOD:299141
N-acetylmethionine on MUNIMOD:1134
N-acetylserine on SUNIMOD:1124
Calcium on DUNIMOD:951108
Water Loss on EUNIMOD:27105
Trimethylation on KUNIMOD:37104
Phosphorylation on SUNIMOD:21101
Calcium on EUNIMOD:951100
Dimethylation on KUNIMOD:3687
Methylation on RUNIMOD:3482
Carboxylation on EUNIMOD:29978
Phosphorylation on TUNIMOD:2178
Formylation on KUNIMOD:12277
Carboxylation on DUNIMOD:29976
Malonylation on KUNIMOD:74770
Succinylation on KUNIMOD:6470
Carbamyl on CUNIMOD:568
Potassium on EUNIMOD:53062
Glutarylation on KUNIMOD:184861
Phosphothreonine on TUNIMOD:2160
N6-methyllysine on KUNIMOD:3457
Omega-N-methylarginine on RUNIMOD:3457
N6-(2-hydroxyisobutyryl)lysine on KUNIMOD:184952
Potassium on DUNIMOD:53052
Dimethylation on RUNIMOD:3650
Nitrosylation on YUNIMOD:35445
Hydroxybutyrylation on K—44
HexNAc on SUNIMOD:4343
Cu[I] on DUNIMOD:53142
Asymmetric dimethylarginine on RUNIMOD:3641
N6-succinyllysine on K—39
N6-glutaryllysine on K—36
HexNAc on TUNIMOD:4335
Cu[I] on EUNIMOD:53133
Zinc on DUNIMOD:95433
Crotonylation on KUNIMOD:136332
N6,N6,N6-trimethyllysine on KUNIMOD:3730
Butyrylation on KUNIMOD:128926
N-acetylthreonine on TUNIMOD:125
N6,N6-dimethyllysine on KUNIMOD:3625
Deamidated asparagine on NUNIMOD:724
Nitrosylation on CUNIMOD:27524
Sulfonation on YUNIMOD:4023
4-hydroxyproline on PUNIMOD:3521
Phosphorylation on YUNIMOD:2118
N6-(beta-hydroxybutyryl)lysine on KUNIMOD:184916
N6-methacryllysine on K—16
Phosphotyrosine on YUNIMOD:2115
N6-isonicotinyllysine on KUNIMOD:69713
N6-crotonyllysine on K—12
ADP-ribosylation on SUNIMOD:21311
N6-butyryllysine on KUNIMOD:128911
Pyridoxal phosphate on KUNIMOD:4610
N-acetylvaline on VUNIMOD:19
Citrulline on RUNIMOD:78
N5-methylglutamine on QUNIMOD:348
Dimethylated arginine on RUNIMOD:367
Zinc on EUNIMOD:9547
N-acetylglycine on GUNIMOD:16
N-myristoyl glycine on GUNIMOD:456
Glu to PyroGlu on QUNIMOD:285
Symmetric dimethylarginine on RUNIMOD:365
Tele-methylhistidine on HUNIMOD:344
5-hydroxylysine on KUNIMOD:353
N-acetylcysteine on CUNIMOD:13
N6-benzoyllysine on KUNIMOD:1363
N6-malonyllysine on K—3
N6-propionyllysine on KUNIMOD:583
S-nitrosocysteine on CUNIMOD:2753
(3S)-3-hydroxyhistidine on H—2
3'-nitrotyrosine on Y—2
3-hydroxyproline on PUNIMOD:352
5-glutamyl glycerylphosphorylethanolamine on EUNIMOD:3962
Cysteine persulfide on CUNIMOD:4212
Cysteine sulfonic acid (-SO3H) on CUNIMOD:3452
HexNAc on NxsUNIMOD:432
N,N,N-trimethylglycine on G—2
Pros-methylhistidine on HUNIMOD:342
4-hydroxylysine on KUNIMOD:351
Cysteine sulfinic acid (-SO2H) on CUNIMOD:4251
Diphthamide on HUNIMOD:3751
N-acetylaspartate on DUNIMOD:11
N-acetylglutamate on EUNIMOD:11
N6-1-carboxyethyl lysine on KUNIMOD:3781
S-(2-succinyl)cysteine on CUNIMOD:9571
S-palmitoyl cysteine on CUNIMOD:471

Every modification with a site on a target protein, most frequent first. A dash in the UNIMOD column means the modification has no UNIMOD term in the registry that searched it, not that it is unknown. One chemistry can appear under two names (UniProt's and MetaMorpheus's); the catalog's ptm_sites_by_chemistry view merges them.

Data

The Parquet files for this dataset are not published yet.

Bundle
557d43f225491daa, written 2026-10-29T12:07:06+00:00 by ingester 1.4.0
Reconciliation
failed: psms_target_1pct, peptidoforms_target_1pct (the bundle disagrees with the producer's own count here)
Licence
CC-BY-4.0
Credit
NCEMS Aging Proteome Working Group