Generated summary
PXD073846 is a DDA label-free dataset (Mus musculus) with 12 runs, 12 samples and enrichment: proximity_labelling. It was reanalysed with MetaMorpheus 1.1.12. At 1% FDR the search reports 171,140 PSMs, 23,990 peptidoforms and 2,307 protein groups, and the repository holds 9,019 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.
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 171140 where the producer reported 171145 (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.
The bundle holds 171140 where the producer reported 171145 (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
10.31% of protein intensity in the worst file, 4.72% median across 12 files (DEF-QC-9 v3.5)
10.31% of protein intensity in the worst file, 4.72% median across 12 files (DEF-QC-9 v3.5)
low_core_use warning
13.03 avg cores of 32 allowed (S5)
13.03 avg cores of 32 allowed (S5)
occupancy_not_stored warning
Of 16691 occupancy entries MetaMorpheus wrote, some are not in ptm_stoichiometry: 926 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).
Of 16691 occupancy entries MetaMorpheus wrote, some are not in ptm_stoichiometry: 926 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: Cell culture. Match on it as text; it has not been mapped to a term.
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: Cell culture. 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: 383 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.
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: 383 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: 1 identifier(s), 5 row(s) dropped, e.g. PXD073846:A0A3B2WBC8;E9Q0K5;G3UZC7;K7N712;L7N269;L7N2B8 written 6 times; quant_values: 16 identifier(s), 80 row(s) dropped, e.g. PXD073846:20191223_Q2_UC_ColID_952_ProjID_1982_Wiesner_Sample_13:label_free:protein_group:PXD073846:A0A3B2WBC8;E9Q0K5;G3UZC7;K7N712;L7N269;L7N2B8:QuantProject:DEF-PROT-INT written 6 times. The full list is in bundle.json under collapsed_duplicates.
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: 1 identifier(s), 5 row(s) dropped, e.g. PXD073846:A0A3B2WBC8;E9Q0K5;G3UZC7;K7N712;L7N269;L7N2B8 written 6 times; quant_values: 16 identifier(s), 80 row(s) dropped, e.g. PXD073846:20191223_Q2_UC_ColID_952_ProjID_1982_Wiesner_Sample_13:label_free:protein_group:PXD073846:A0A3B2WBC8;E9Q0K5;G3UZC7;K7N712;L7N269;L7N2B8:QuantProject:DEF-PROT-INT written 6 times. The full list is in bundle.json under collapsed_duplicates.
occupancy_decoy_groups info
15 occupancy entries on decoy protein groups were not stored: MetaMorpheus computes them, and they are FDR machinery, not biology.
15 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% FDR | 171,140 |
| Peptidoforms at 1% FDR | 23,990 |
| Protein groups at 1% FDR | 2,307 |
| PTM sites | 9,019 |
| Quantitative values | 220,394 |
| PSMs, all (including decoys and sub-threshold) | 284,608 |
| MS2 identification rate (pxreprise:DEF-ID-RATE) | 72.9% |
| Contaminant share of PSMs (pxreprise:DEF-CONTAM-PSM) | 11.2% |
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
- proximity_labelling
- Instrument vendor
- Thermo
- Runs / samples
- 12 / 12
- Sample metadata
- trusted
- Search engine
- MetaMorpheus 1.1.12
- Protein database
- UP000000589_all_genecentric_2026_03_agingPTM-v4.xml
- Pipeline commit
- 5aec9eb024d8
Modifications
| Search engine's name | UNIMOD | Sites |
|---|---|---|
| Carbamidomethyl on C | UNIMOD:4 | 3,342 |
| Oxidation on M | UNIMOD:35 | 2,552 |
| Deamidation on Q | UNIMOD:7 | 652 |
| Deamidation on N | UNIMOD:7 | 451 |
| Hydroxylation on P | UNIMOD:35 | 412 |
| Ammonia loss on N | UNIMOD:385 | 122 |
| 4-hydroxyproline on P | UNIMOD:35 | 117 |
| Citrullination on R | UNIMOD:7 | 85 |
| Hydroxylation on N | UNIMOD:35 | 71 |
| Hydroxylation on K | UNIMOD:35 | 54 |
| N-acetylalanine on A | UNIMOD:1 | 49 |
| Acetylation on X | UNIMOD:1 | 39 |
| Ammonia loss on C | UNIMOD:385 | 32 |
| Methylation on K | UNIMOD:34 | 30 |
| Water Loss on E | UNIMOD:27 | 29 |
| Fe[III] on D | UNIMOD:1870 | 22 |
| Phosphoserine on S | UNIMOD:21 | 21 |
| Fe[III] on E | UNIMOD:1870 | 19 |
| Methylation on R | UNIMOD:34 | 18 |
| N-acetylmethionine on M | UNIMOD:1 | 18 |
| N6-acetyllysine on K | UNIMOD:1 | 18 |
| Formylation on K | UNIMOD:122 | 16 |
| Acetylation on K | UNIMOD:1 | 15 |
| N-acetylserine on S | UNIMOD:1 | 14 |
| N6,N6,N6-trimethyllysine on K | UNIMOD:37 | 12 |
| HexNAc on T | UNIMOD:43 | 11 |
| N6,N6-dimethyllysine on K | UNIMOD:36 | 11 |
| Phosphorylation on T | UNIMOD:21 | 10 |
| Trimethylation on K | UNIMOD:37 | 10 |
| 5-hydroxylysine on K | UNIMOD:35 | 9 |
| Magnesium on E | UNIMOD:956 | 9 |
| Magnesium on D | UNIMOD:956 | 8 |
| Asymmetric dimethylarginine on R | UNIMOD:36 | 7 |
| Fe[II] on E | UNIMOD:952 | 7 |
| Phosphothreonine on T | UNIMOD:21 | 7 |
| N-myristoyl glycine on G | UNIMOD:45 | 6 |
| N6-methyllysine on K | UNIMOD:34 | 6 |
| Phosphorylation on S | UNIMOD:21 | 6 |
| Sulfonation on Y | UNIMOD:40 | 6 |
| Carboxylation on D | UNIMOD:299 | 5 |
| Dimethylation on R | UNIMOD:36 | 5 |
| GG (Ubiquitination Site) on K | UNIMOD:121 | 5 |
| Glutarylation on K | UNIMOD:1848 | 5 |
| Malonylation on K | UNIMOD:747 | 5 |
| N6-succinyllysine on K | — | 5 |
| Nitrosylation on Y | UNIMOD:354 | 5 |
| Carbamyl on X | UNIMOD:5 | 4 |
| Carboxylation on E | UNIMOD:299 | 4 |
| Deamidated asparagine on N | UNIMOD:7 | 4 |
| HexNAc on S | UNIMOD:43 | 4 |
| Sodium on E | UNIMOD:30 | 4 |
| Tele-methylhistidine on H | UNIMOD:34 | 4 |
| Crotonylation on K | UNIMOD:1363 | 3 |
| Dimethylation on K | UNIMOD:36 | 3 |
| Hydroxybutyrylation on K | — | 3 |
| N-acetylglycine on G | UNIMOD:1 | 3 |
| N-acetylthreonine on T | UNIMOD:1 | 3 |
| N5-methylglutamine on Q | UNIMOD:34 | 3 |
| Omega-N-methylarginine on R | UNIMOD:34 | 3 |
| Pros-methylhistidine on H | UNIMOD:34 | 3 |
| Sodium on D | UNIMOD:30 | 3 |
| Succinylation on K | UNIMOD:64 | 3 |
| 3-hydroxyproline on P | UNIMOD:35 | 2 |
| Carboxylation on K | UNIMOD:299 | 2 |
| Phosphorylation on Y | UNIMOD:21 | 2 |
| (3S)-3-hydroxylysine on K | — | 1 |
| 3'-nitrotyrosine on Y | — | 1 |
| 5-glutamyl glycerylphosphorylethanolamine on E | UNIMOD:396 | 1 |
| Butyrylation on K | UNIMOD:1289 | 1 |
| Carbamyl on M | UNIMOD:5 | 1 |
| Citrulline on R | UNIMOD:7 | 1 |
| Diphthamide on H | UNIMOD:375 | 1 |
| Fe[II] on D | UNIMOD:952 | 1 |
| N-acetylaspartate on D | UNIMOD:1 | 1 |
| N-acetylcysteine on C | UNIMOD:1 | 1 |
| N-acetylglutamate on E | UNIMOD:1 | 1 |
| N6-butyryllysine on K | UNIMOD:1289 | 1 |
| Symmetric dimethylarginine on R | UNIMOD:36 | 1 |
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
cb91c24a2aafdca8, written 2026-10-29T09:25:57+00:00 by ingester 1.4.0- Reconciliation
- failed: psms_target_1pct (the bundle disagrees with the producer's own count here)
- Licence
- CC-BY-4.0
- Credit
- NCEMS Aging Proteome Working Group