PF10070: DabA

Probable inorganic carbon transporter subunit DabA

Curation status: SEEDED
Seed status: EX DUF
Characterization: UNSCORED

Grounding

PF10070: Probable inorganic carbon transporter subunit DabA
IPR018752: integrated entry for Probable inorganic carbon transporter subunit DabA

Source description

This entry represents the probable inorganic carbon transporter subunit DabA, which is part of an energy-coupled inorganic carbon pump together with DabB subunit in DAB operons (DAB1 and DAB2), found in a wide range of bacteria and archaea. Members of this family were previously known as UPF0753. DAB operon is required for CO2 concentrating mechanisms [InterPro reference PUB00093673]. The substrate of this subunit may be CO2 rather than carbonate ions based on kinetic calculations and in experimental assays in which E.coli was deleted of its carbonic anhydrase genes and expression of DAB2 operon restores its growth. Structural homology modelling suggests that DabA contains a domain that is distantly homologous to a type II beta-carbonic anhydrase (CA).

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

3 verified sequence examples. FASTA

UniProt	Protein / organism	Sequence	Provenance
D0KWS7	Probable inorganic carbon transporter subunit DabA2 Halothiobacillus neapolitanus (strain ATCC 23641 / DSM 15147 / CIP 104769 / NCIMB 8539 / c2)	827 aa; version 1 UniProt 2026_03	UNIPROT FETCH 1 sibling references ProteinTraitsMech: Pfam:PF10070
O34688	Probable inorganic carbon transporter subunit DabA Bacillus subtilis (strain 168)	871 aa; version 2 UniProt 2026_03	UNIPROT FETCH 1 sibling references ProteinTraitsMech: Pfam:PF10070
Q31HC3	Probable inorganic carbon transporter subunit DabA Hydrogenovibrio crunogenus (strain DSM 25203 / XCL-2)	823 aa; version 1 UniProt 2026_03	UNIPROT FETCH 1 sibling references ProteinTraitsMech: Pfam:PF10070

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: 2,360
matches: 2,419
proteomes: 2,033
taxa: 3,561
structures: 3
alphafold models: 1,624
domain architectures: 7

Classification basis

pfam previous unknown name

No scoring reasons supplied.

Related Mech records

This family joined the worklist after the frozen cross-Mech scan, so other Mechs were not searched for it. Missing links here are not evidence that other Mechs lack it; rows shown come from mentions of a former DUF/UPF name.

No cross-Mech examples are present in the supplied snapshot.

Curation history and reviews

No retained curation events supplied.

No retained review supplied.

Record source

data/families/PF10070.yaml
Family YAML in this build

Download this family (JSON)

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.