Rv2263 Family assigned · medium auto-curated
H37Rv Rv2263 · MTBC0 mtbc0_002405 ·
317 aa · 2561746–2562699 (+) ·
RefSeq NP_216779.1
Annotation: from legacy to revised
| Legacy (H37Rv / Mycobrowser) | oxidoreductase |
|---|---|
| MTBC0 PGAP re-annotation | SDR family oxidoreductase |
| Revised (this work) | SDR family oxidoreductase. Pfam: adh_short (PF00106.32), Epimerase (PF01370.28), KR (PF08659.17), adh_short_C2 (PF13561.13). |
Auto-curated: this verdict and function were generated by rules from PGAP + Pfam + Foldseek and have not been hand-reviewed.
Curated reference (UniProt)
| UniProt |
O53537
TrEMBL · unreviewed
· Evidence at protein level
|
|---|---|
| UniProt name | Possible oxidoreductase |
Functional vocabulary (eggNOG-mapper, orthology transfer)
| COG category |
I Lipid transport and metabolismQ Secondary metabolites biosynthesis, transport and catabolism
|
|---|---|
| eggNOG description | Belongs to the short-chain dehydrogenases reductases (SDR) family |
| Orthologous group | COG1028 |
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 | 1.39 · diversifying/relaxed |
|---|---|
| Polymorphic sites (≥ 0.1% of strains) | 1 synonymous, 4 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 |
|---|---|---|---|---|
adh_short | PF00106.32 | 6.7e-31 | 15–216 | short chain dehydrogenase |
Epimerase | PF01370.28 | 4.1e-07 | 18–204 | NAD dependent epimerase/dehydratase family |
KR | PF08659.17 | 2.9e-06 | 18–105 | KR domain |
adh_short_C2 | PF13561.13 | 3.8e-20 | 21–216 | Enoyl-(Acyl carrier protein) reductase |
Functional interaction network (STRING v12, guilt-by-association)
Closest characterised functional partner: Rv2262c (Conserved hypothetical protein; Catalyzes the phospholipid dependent N-acylation of the N- terminal cysteine of apolipoprotein, the last ste), medium confidence from genomic context alone (score 556 excluding text-mining).
| Partner | Product | Score | No text-mining | Channels (≥400) |
|---|---|---|---|---|
Rv2524c fas |
fatty acid synthase | 826 | 800 | coexpression:506 experimental:475 |
Rv2262c |
Conserved hypothetical protein; Catalyzes the phospholipid dependent N-acylation of the N- terminal cysteine of apolipoprotein, the last ste | 910 | 556 ctx | neighborhood:553 textmining:807 |
Rv2261c |
Rv2261c, (MTV022.11c), len: 140 aa. Conserved hypothetical protein, with function unknown but some similarity to C-terminal end of PCC6803 a | 554 | 555 ctx | neighborhood:553 |
Rv1937 |
oxygenase | 593 | 545 | |
Rv2299c htpG |
chaperone protein HtpG | 541 | 521 | database:450 |
Rv0073 |
glutamine ABC transporter ATP-binding protein | 532 | 510 | database:431 |
Rv2564 glnQ |
glutamine ABC transporter ATP-binding protein | 532 | 510 | database:431 |
Rv3728 |
membrane protein | 568 | 509 | database:431 |
Rv3239c |
transmembrane transport protein | 534 | 508 | database:431 |
Rv2565 |
NTE family protein | 518 | 499 | database:431 |
Rv2434c |
transmembrane protein | 515 | 496 | database:431 |
Rv0009 ppiA |
iron-regulated peptidyl-prolyl cis-trans isomerase PpiA | 511 | 493 | |
Rv1675c cmr |
HTH-type transcriptional regulator Cmr | 491 | 490 | database:431 |
Rv0104 hyp |
hypothetical protein | 491 | 490 | database:431 |
Rv0998 |
acetyltransferase Pat | 491 | 490 | database:431 |
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
- Legacy H37Rv annotation: oxidoreductase
- MTBC0 PGAP product: SDR family oxidoreductase
- Pfam (hmmscan --cut_ga): adh_short PF00106.32 (E=7e-31), Epimerase PF01370.28 (E=4e-07), KR PF08659.17 (E=3e-06), adh_short_C2 PF13561.13 (E=4e-20)
- (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_216779.1)
- Domains: Pfam-A via hmmscan --cut_ga — adh_short (PF00106.32), Epimerase (PF01370.28), KR (PF08659.17), adh_short_C2 (PF13561.13)
- 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
COG1028 - Curated reference: UniProt O53537 (TrEMBL, unreviewed; Evidence at protein level)
- 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 —
75 functional partner(s); context anchor
Rv2262c - Primary literature: none located yet; annotation rests on the domain/homology sources above.
Ancestral MTBC0 protein sequence
>mtbc0_002405|Rv2263| MAKDLVATVPDLSGKLAIITGANSGLGFGLARRLSAAGADVIMAIRNRAKGEAAVEEIRTAVPDAKLTIKALDLSSLASVAALGEQLMADGRPIDLLINNAGVMTPPERVTTADGFELQFGSNHLGHFALTAHLLPLLRAAQRARVVSLSSLAARRGRIHFDDLQFERSYAPMTAYGQSKLAVLMFARELDRRSRAAGWGIISNAAHPGLTKTNLQIAGPSHGRDKPALMERLYKTSWRFAPFLWQEIEEGILPALYAAATPQADGGAFYGPRGRYEVAGGGVREAKVPAAARNDADSKRLWEVSEQLTGVSYPKSR