Generated summary
PXD045821 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 230,387 PSMs, 15,385 peptidoforms and 3,089 protein groups, and the repository holds 8,220 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 1 for information
count_mismatch warning
The bundle holds 230387 where the producer reported 230428 (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 230387 where the producer reported 230428 (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
19.59% of protein intensity in the worst file, 18.10% median across 12 files (DEF-QC-9 v3.5)
19.59% of protein intensity in the worst file, 18.10% median across 12 files (DEF-QC-9 v3.5)
low_core_use warning
10.91 avg cores of 32 allowed (S5)
10.91 avg cores of 32 allowed (S5)
no_sdrf warning
No SDRF was found for this dataset, so each run was given a synthetic sample of its own. There is no sample metadata: treat every sample as unannotated.
No SDRF was found for this dataset, so each run was given a synthetic sample of its own. There is no sample metadata: treat every sample as unannotated.
occupancy_not_stored warning
Of 9386 occupancy entries MetaMorpheus wrote, some are not in ptm_stoichiometry: 3921 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 9386 occupancy entries MetaMorpheus wrote, some are not in ptm_stoichiometry: 3921 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).
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: 242 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: 242 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.
occupancy_decoy_groups info
124 occupancy entries on decoy protein groups were not stored: MetaMorpheus computes them, and they are FDR machinery, not biology.
124 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 | 230,387 |
| Peptidoforms at 1% FDR | 15,385 |
| Protein groups at 1% FDR | 3,089 |
| PTM sites | 8,220 |
| Quantitative values | 268,893 |
| PSMs, all (including decoys and sub-threshold) | 1,069,661 |
| MS2 identification rate (pxreprise:DEF-ID-RATE) | 32.1% |
| Contaminant share of PSMs (pxreprise:DEF-CONTAM-PSM) | 9.9% |
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
- not recorded
- Runs / samples
- 12 / 12
- Sample metadata
- absent
- Search engine
- MetaMorpheus 1.1.12
- Protein database
- UP000000589_all_genecentric_2026_03_agingPTM-v3.xml
- Pipeline commit
- 852cea5e1cd7
Modifications
| Search engine's name | UNIMOD | Sites |
|---|---|---|
| Carbamidomethyl on C | UNIMOD:4 | 5,771 |
| Oxidation on M | UNIMOD:35 | 831 |
| Phosphoserine on S | UNIMOD:21 | 163 |
| N-acetylalanine on A | UNIMOD:1 | 161 |
| Hydroxylation on P | UNIMOD:35 | 111 |
| N-acetylmethionine on M | UNIMOD:1 | 88 |
| Acetylation on X | UNIMOD:1 | 77 |
| N-acetylserine on S | UNIMOD:1 | 67 |
| Phosphorylation on S | UNIMOD:21 | 67 |
| N6-acetyllysine on K | UNIMOD:1 | 55 |
| Phosphorylation on T | UNIMOD:21 | 46 |
| GG (Ubiquitination Site) on K | UNIMOD:121 | 37 |
| Phosphothreonine on T | UNIMOD:21 | 29 |
| 4-hydroxyproline on P | UNIMOD:35 | 26 |
| Omega-N-methylarginine on R | UNIMOD:34 | 21 |
| Acetylation on K | UNIMOD:1 | 19 |
| Methylation on K | UNIMOD:34 | 18 |
| Dimethylation on K | UNIMOD:36 | 17 |
| HexNAc on T | UNIMOD:43 | 17 |
| Hydroxylation on K | UNIMOD:35 | 17 |
| Asymmetric dimethylarginine on R | UNIMOD:36 | 12 |
| N-acetylthreonine on T | UNIMOD:1 | 12 |
| Phosphotyrosine on Y | UNIMOD:21 | 12 |
| Deamidated asparagine on N | UNIMOD:7 | 11 |
| HexNAc on S | UNIMOD:43 | 11 |
| Methylation on R | UNIMOD:34 | 9 |
| N6,N6,N6-trimethyllysine on K | UNIMOD:37 | 8 |
| N6-methyllysine on K | UNIMOD:34 | 8 |
| Phosphorylation on Y | UNIMOD:21 | 8 |
| N6,N6-dimethyllysine on K | UNIMOD:36 | 6 |
| Dimethylation on R | UNIMOD:36 | 5 |
| N6-succinyllysine on K | — | 5 |
| Malonylation on K | UNIMOD:747 | 4 |
| N-acetylcysteine on C | UNIMOD:1 | 4 |
| Tele-methylhistidine on H | UNIMOD:34 | 3 |
| Trimethylation on K | UNIMOD:37 | 3 |
| 5-glutamyl glycerylphosphorylethanolamine on E | UNIMOD:396 | 2 |
| Citrulline on R | UNIMOD:7 | 2 |
| Hydroxyproline on P | UNIMOD:35 | 2 |
| N-acetylglycine on G | UNIMOD:1 | 2 |
| N-acetylvaline on V | UNIMOD:1 | 2 |
| N6-propionyllysine on K | UNIMOD:58 | 2 |
| (3S)-3-hydroxyhistidine on H | — | 1 |
| 3-hydroxyproline on P | UNIMOD:35 | 1 |
| Butyrylation on K | UNIMOD:1289 | 1 |
| Crotonylation on K | UNIMOD:1363 | 1 |
| Dimethylated arginine on R | UNIMOD:36 | 1 |
| Diphthamide on H | UNIMOD:375 | 1 |
| Glutarylation on K | UNIMOD:1848 | 1 |
| N-acetylaspartate on D | UNIMOD:1 | 1 |
| N-acetylglutamate on E | UNIMOD:1 | 1 |
| N-myristoyl glycine on G | UNIMOD:45 | 1 |
| N5-methylglutamine on Q | UNIMOD:34 | 1 |
| N6-(2-hydroxyisobutyryl)lysine on K | UNIMOD:1849 | 1 |
| N6-butyryllysine on K | UNIMOD:1289 | 1 |
| N6-glutaryllysine on K | — | 1 |
| N6-isonicotinyllysine on K | UNIMOD:697 | 1 |
| N6-methacryllysine on K | — | 1 |
| Pros-methylhistidine on H | UNIMOD:34 | 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
43cc92093e51092c, written 2026-10-29T09:44:52+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