All families / PF15949
PF15949: DUF4757
Domain of unknown function (DUF4757)
- Curation status
- SEEDED
- Seed status
- UNKNOWN CANDIDATE
- Characterization
- UNSCORED
Grounding
PF15949: Domain of unknown function (DUF4757)
IPR031865: integrated entry for Domain of unknown function (DUF4757)
Source description
This presumed domain is functionally uncharacterised. This domain family is found in eukaryotes, and is typically between 145 and 166 amino acids in length. The family is found in association with PF00412 (Pfam entry). There are two completely conserved residues (W and L) that may be functionally important.
Evidence and references
Source descriptions and links are provenance, not independent functional validation.
Evidence counts: not scored.
Curated functional assertions
No curated functional assertions supplied.
Protein sequence examples
4 verified sequence examples. FASTA
| UniProt | Protein / organism | Sequence | Provenance |
|---|---|---|---|
| Q0KIC3 | Uncharacterized protein CG43427 Drosophila melanogaster | 1372 aa; version 1 UniProt 2026_03 | UNIPROT FETCH1 sibling references |
| Q3UH68 | LIM and calponin homology domains-containing protein 1 Mus musculus | 1057 aa; version 2 UniProt 2026_03 | UNIPROT FETCH1 sibling references |
| Q8WWI1 | LIM domain only protein 7 Homo sapiens | 1683 aa; version 3 UniProt 2026_03 | PTM REGISTRY MIRROR2 sibling references |
| Q9UPQ0 | LIM and calponin homology domains-containing protein 1 Homo sapiens | 1083 aa; version 4 UniProt 2026_03 | PTM REGISTRY MIRROR2 sibling references |
Pfam membership is not functional evidence. Whole-protein sequences do not establish domain boundaries. A coverage gap here is not absence from UniProt.
Sequences and metadata: UniProt Consortium, CC BY 4.0.
Domain matches
No residue-level domain match evidence is available in this build. Structure and AlphaFold counters do not supply coordinates or establish function.
Snapshot counters
- proteins
- 5,783
- matches
- 8,042
- proteomes
- 999
- taxa
- 3,296
- structures
- 0
- alphafold models
- 2,436
- domain architectures
- 55
Classification basis
short name matches duf; name says unknown function; domain of unknown function
No scoring reasons supplied.
Related Mech records
| Family | Mech | Record | Protein | Link basis |
|---|---|---|---|---|
| DUF4757 (PF15949) | ProteinTraitsMech | Domain of unknown function DUF4757 | Q0KIC3 Uncharacterized protein CG43427 | canonical example family classification |
| DUF4757 (PF15949) | ProteinTraitsMech | Domain of unknown function DUF4757 | trait identifier | |
| DUF4757 (PF15949) | ProteinTraitsMech | Domain of unknown function (DUF4757) | Q3UH68 LIM and calponin homology domains-containing protein 1 | canonical example family classification |
| DUF4757 (PF15949) | ProteinTraitsMech | Domain of unknown function (DUF4757) | Q8WWI1 LIM domain only protein 7 | canonical example family classification |
| DUF4757 (PF15949) | ProteinTraitsMech | Domain of unknown function (DUF4757) | Q9UPQ0 LIM and calponin homology domains-containing protein 1 | canonical example family classification |
| DUF4757 (PF15949) | ProteinTraitsMech | Domain of unknown function (DUF4757) | trait identifier |
Curation history and reviews
No retained curation events supplied.
No retained review supplied.
Record source
Status and evidence
- Seed status
- A name-based classification of frozen InterPro/Pfam metadata. UNKNOWN CANDIDATE means the metadata explicitly says the function is unknown. KNOWN HISTORICAL DUF means a DUF name matched without that wording; this heuristic is not proof of a known function and does not establish experimental characterization. EX DUF means Pfam renamed the family away from a DUF/UPF name, as recorded in Pfam's previous identifiers; a rename usually follows published work on some members but is naming history, not proof of function for every member. Some EX DUF families' current names or descriptions still say the function is unknown; their classification basis lists this, and scoring does not treat them as characterized. FALSE POSITIVE TEXT HIT means the naming rules did not match.
- Characterization
- A separate evidence-scoring result. UNSCORED means no score has been calculated; it is not evidence that the family lacks a known function. Missing scores are not negative evidence. PARTIALLY CHARACTERIZED has partial support; KNOWN HISTORICAL DUF can inherit the seed label or reflect a known-function signal. Neither label implies experimental validation.
- Evidence counts
- Source-specific signals, not unique proteins, publications, or confidence scores. Known counts Rhea reactions and experimentally supported GO molecular-function annotations. Partial counts functional/domain assignments. Context counts structural, environmental, orthology, interaction and neighborhood signals; context alone does not assign function. Repeated annotations may not be independent.
- Curation status
- Reported separately from seed classification and characterization. SNAPSHOT ONLY means no curated metadata was supplied for this build. SEEDED denotes a source-derived record, not an expert-reviewed functional claim.
- Missing counts
- Not available means the source did not supply that counter. A zero is a reported count. Not scored means evidence counts are unavailable.