Smith_3556873_p microprotein
Same-strand overlap (alternative frame)
existence proven (MS)
function unknown
63 aa
A non-canonical small protein (smORF) excluded from the H37Rv annotation, detected by proteogenomics with a high-confidence peptide-spectrum match. It is served here as part of a separate microproteome track: it is not one of the 3906 canonical genes and does not count in the dark stock. Its existence is proven; its molecular function is unknown.
Evidence & coordinates
| Detection method | Ribo-seq / Ribo-RET translation (Smith 2022) |
|---|---|
| Existence evidence | Ribo-seq / Ribo-RET translation (relative ribosome density 6.99); protein-coding G/C-skew signature (p=0.0107216) |
| Cysteines | (the VapC4 method targets Cys codons) |
| Cross-validation | no Ribo-RET footprint at this start (Smith et al. 2022). Not informative on its own: measured genome-wide, this Ribo-RET dataset recovers only 29.1 % of annotated H37Rv starts (1136/3906), so its absence here does not argue against this microprotein — existence is already established by the MS evidence above. (P20.5) |
| H37Rv coordinates | 3556873–3557064 (+ strand) |
| Length | 63 amino acids |
Sequence
MNGFKDARPDRLPLSASVWDIAQRYNKGGPTVTEALYEALKELEAQVIALQRSEGKGLLSRLSSource: Smith C, Canestrari JG, Wang AJ et al., eLife 2022;11:e73980 (doi:10.7554/eLife.73980; PMC9094748); ribosome-profiling translatome. Overlap class is assigned by geometry against the H37Rv CDS set, not by the source's own label. ← all microproteins