Rv1051c Family assigned · medium auto-curated
H37Rv Rv1051c · MTBC0 - ·
251 aa · 1173945–1174700 (-) ·
RefSeq NP_215567.1
Annotation: from legacy to revised
| Legacy (H37Rv / Mycobrowser) | hypothetical protein |
|---|---|
| MTBC0 PGAP re-annotation | — |
| Revised (this work) | Contains AbiEii (PF08843.18), HTH_17 (PF12728.14) domain(s); putative function inferred from the domain architecture. |
Auto-curated: this verdict and function were generated by rules from PGAP + Pfam + Foldseek and have not been hand-reviewed.
Annotated on the H37Rv protein: this gene has no 1:1 ancestral MTBC0 anchor (PE/PPE, paralogue, IS element, or otherwise unanchored CDS).
Curated reference (UniProt)
| UniProt |
O53399
TrEMBL · unreviewed
· Predicted
|
|---|---|
| UniProt name | Helix-turn-helix domain-containing protein |
Functional vocabulary (eggNOG-mapper, orthology transfer)
| COG category |
K Transcription
|
|---|---|
| eggNOG description | Nucleotidyl transferase AbiEii toxin, Type IV TA system |
| Orthologous group | COG0789 |
Orthology-based transfer (eggNOG 5.0.2, diamond). EC/KO/GO/CAZy are computed annotations, not manual curation; cross-check against the primary literature before treating a specific reaction as established.
Conservation & selection (intra-MTBC, 145 209 strains)
| pN/pS | n/a |
|---|---|
| Polymorphic sites (≥ 0.1% of strains) | 0 synonymous, 7 missense, 0 nonsense, 0 frameshift |
pN/pS from segregating SNPs (singletons removed) normalised by possible sites. Low pN/pS = purifying selection (a strong signal that a "hypothetical" is a real, constrained gene). A high pN/pS is ambiguous: relaxed constraint or positive selection (drug resistance, antigenic variation) inflate it; e.g. rpoB/katG/pncA score high here for resistance, not loss of function. A clonal disruption (one allele over a clade) suggests lineage pseudogenisation; a convergent one (many independent alleles) is typical of resistance loss-of-function.
Domains (Pfam, hmmscan --cut_ga)
| Pfam | Accession | i-Evalue | Residues | Description |
|---|---|---|---|---|
AbiEii | PF08843.18 | 3.9e-16 | 7–154 | Nucleotidyl transferase AbiEii toxin, Type IV TA system |
HTH_17 | PF12728.14 | 1.3e-08 | 195–245 | Helix-turn-helix domain |
Functional interaction network (STRING v12, guilt-by-association)
Closest characterised functional partner: PE_PGRS36 (PE-PGRS family protein PE_PGRS36; Rv2098c, (MTCY49.38c), len: 434 aa. PE_PGRS36,Member of the Mycobacterium tuberculosis PE family, PGRS sub), medium confidence from genomic context alone (score 496 excluding text-mining). This association is the citable seed of a function hypothesis for this hypothetical protein.
| Partner | Product | Score | No text-mining | Channels (≥400) |
|---|---|---|---|---|
Rv2098c PE_PGRS36 |
PE-PGRS family protein PE_PGRS36; Rv2098c, (MTCY49.38c), len: 434 aa. PE_PGRS36,Member of the Mycobacterium tuberculosis PE family, PGRS sub | 495 | 496 ctx | cooccurence:490 |
Rv0977 PE_PGRS16 |
PE-PGRS family protein PE_PGRS16 | 494 | 494 ctx | cooccurence:494 |
Rv3638 |
transposase | 450 | 451 | coexpression:441 |
Rv1651c PE_PGRS30 |
PE-PGRS family protein PE_PGRS30 | 436 | 436 ctx | cooccurence:436 |
Rv2082 hyp |
hypothetical protein | 408 | 408 | |
Rv2490c PE_PGRS43 |
PE-PGRS family protein PE_PGRS43 | 400 | 400 ctx | cooccurence:400 |
STRING combines evidence channels (neighborhood, fusion, cooccurrence, coexpression, experimental, database, text-mining) into a 0–1000 score. The ctx badge marks edges carried by the genomic-context channels (conserved neighborhood, fusion, phylogenetic co-occurrence), which are independent of orthology and structure and the strongest signal for an unknown gene. The no text-mining column recomputes the score from data alone, so a link that does not depend on the literature is visible. Association is a function hypothesis, not proof: corroborate with the operon context and the primary literature before assigning a function.
Evidence
- Annotation from H37Rv (no MTBC0 1:1 anchor; H37Rv protein used): hypothetical protein
- Pfam (hmmscan --cut_ga): AbiEii PF08843.18 (E=4e-16), HTH_17 PF12728.14 (E=1e-08)
- (auto-curated by rules from PGAP + Pfam + Foldseek; not hand-reviewed)
Sources
- Ancestral sequence & coordinates: Harrison LB et al. (2024), An imputed ancestral reference genome for the MTBC, doi:10.1101/2023.09.07.556366
- Product annotation: NCBI PGAP on MTBC0; legacy from H37Rv NC_000962.3 (RefSeq NP_215567.1)
- Domains: Pfam-A via hmmscan --cut_ga — AbiEii (PF08843.18), HTH_17 (PF12728.14)
- Sequence-level signal: ESM Atlas (EvolutionaryScale × BioHub) — exploratory
- Controlled vocabulary: eggNOG-mapper 2.1.12 (Cantalapiedra et al. 2021,
doi:10.1093/molbev/msab293), eggNOG 5.0 DB
(Huerta-Cepas et al. 2019) — OG
COG0789 - Curated reference: UniProt O53399 (TrEMBL, unreviewed; Predicted)
- Intra-MTBC selection: pN/pS and disruption from SPDI variants of 145 209 MTBC strains (this work, local collection vs H37Rv NC_000962.3)
- Interaction network: STRING v12.0 (Szklarczyk et al. 2023,
doi:10.1093/nar/gkac1000), taxon 83332, CC-BY 4.0 —
6 functional partner(s); context anchor
PE_PGRS36 - Primary literature: none located yet; annotation rests on the domain/homology sources above.
Ancestral MTBC0 protein sequence
>H37Rv|Rv1051c| MRADVTAEHLTQVVRDIAVIDIDDGVAFNLDTSSVQEIRERADYPGLRVRVAMSVGPWQGIAAWDVSTGEPIAPWPTRVTIDRILGEPITLLGYAPETIIAEKGVTILERGITSTRWRDYVDIVQLDRRGIDDDELLRSARAVAQYRGATLEPVAPHLAGYGAVAQAKWATEHGRCQHCWRHWKPAHVGRRNMDLLDAKQVSEMIGVPVGTLRHWRHSDIGPASFTLGRRVVYRRDEVSRWISKRESATRR