All families / PF13778
PF13778: DUF4174
Domain of unknown function (DUF4174)
- Curation status
- SEEDED
- Seed status
- UNKNOWN CANDIDATE
- Characterization
- UNSCORED
Grounding
PF13778: Domain of unknown function (DUF4174)
IPR025232: integrated entry for Domain of unknown function (DUF4174)
Source description
This domain of unknown function is found in a putative tumour suppressor gene [InterPro reference PUB00057318] and in a ligand for the the urokinase-type plasminogen activator receptor, which plays a role in cellular migration and adhesion [InterPro reference PUB00057319,InterPro reference PUB00057320].
Evidence and references
- InterPro entry and its literature references. PUB identifiers are internal InterPro references, not PubMed identifiers. Unresolved citations link to the originating entry.
- Frozen description source: InterPro/Pfam API
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
6 verified sequence examples. FASTA
| UniProt | Protein / organism | Sequence | Provenance |
|---|---|---|---|
| O60687 | Sushi repeat-containing protein SRPX2 Homo sapiens | 465 aa; version 1 UniProt 2026_03 | PTM REGISTRY MIRROR |
| P78539 | Sushi repeat-containing protein SRPX Homo sapiens | 464 aa; version 1 UniProt 2026_03 | UNIPROT FETCH |
| Q76M96 | Coiled-coil domain-containing protein 80 Homo sapiens | 950 aa; version 1 UniProt 2026_03 | UNIPROT FETCH1 sibling references |
| Q8R054 | Sushi repeat-containing protein SRPX2 Mus musculus | 468 aa; version 2 UniProt 2026_03 | UNIPROT FETCH |
| Q8R2G6 | Coiled-coil domain-containing protein 80 Mus musculus | 949 aa; version 2 UniProt 2026_03 | UNIPROT FETCH1 sibling references |
| Q9R0M3 | Sushi-repeat-containing protein SRPX Mus musculus | 464 aa; version 1 UniProt 2026_03 | UNIPROT FETCH |
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
- 5,184
- matches
- 7,353
- proteomes
- 2,744
- taxa
- 5,180
- structures
- 0
- alphafold models
- 4,088
- domain architectures
- 38
Classification basis
short name matches duf; name says unknown function; description says unknown function; domain of unknown function
No scoring reasons supplied.
Related Mech records
| Family | Mech | Record | Protein | Link basis |
|---|---|---|---|---|
| DUF4174 (PF13778) | ProteinTraitsMech | hepatocyte growth factor binding | O60687 Sushi repeat-containing protein SRPX2 | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | hepatocyte growth factor binding | Q8R054 Sushi repeat-containing protein SRPX2 | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | negative regulation of cell proliferation involved in contact inhibition | Q9R0M3 Sushi-repeat-containing protein SRPX | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | phagolysosome assembly | P78539 Sushi repeat-containing protein SRPX | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | Domain of unknown function DUF4174 | O60687 Sushi repeat-containing protein SRPX2 | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | Domain of unknown function DUF4174 | P78539 Sushi repeat-containing protein SRPX | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | Domain of unknown function DUF4174 | Q76M96 Coiled-coil domain-containing protein 80 | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | Domain of unknown function DUF4174 | Q8R054 Sushi repeat-containing protein SRPX2 | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | Domain of unknown function DUF4174 | Q8R2G6 Coiled-coil domain-containing protein 80 | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | Domain of unknown function DUF4174 | Q9R0M3 Sushi-repeat-containing protein SRPX | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | Domain of unknown function DUF4174 | trait identifier | |
| DUF4174 (PF13778) | ProteinTraitsMech | HYR domain | O60687 Sushi repeat-containing protein SRPX2 | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | HYR domain | P78539 Sushi repeat-containing protein SRPX | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | HYR domain | Q8R054 Sushi repeat-containing protein SRPX2 | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | HYR domain | Q9R0M3 Sushi-repeat-containing protein SRPX | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | HYR domain | O60687 Sushi repeat-containing protein SRPX2 | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | HYR domain | P78539 Sushi repeat-containing protein SRPX | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | Domain of unknown function (DUF4174) | O60687 Sushi repeat-containing protein SRPX2 | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | Domain of unknown function (DUF4174) | P78539 Sushi repeat-containing protein SRPX | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | Domain of unknown function (DUF4174) | Q8R054 Sushi repeat-containing protein SRPX2 | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | Domain of unknown function (DUF4174) | trait identifier | |
| DUF4174 (PF13778) | ProteinTraitsMech | HYR domain profile | O60687 Sushi repeat-containing protein SRPX2 | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | HYR domain profile | P78539 Sushi repeat-containing protein SRPX | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | HYR domain profile | Q8R054 Sushi repeat-containing protein SRPX2 | canonical example family classification |
| DUF4174 (PF13778) | ProteinTraitsMech | HYR domain profile | Q9R0M3 Sushi-repeat-containing protein SRPX | canonical example family classification |
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.