Translational control and transcript fate
Connecting a resolved modification to what happens to the transcript: stability, translation and how the two move together when a condition changes.
01The question
This line of work asks whether the modification state of a specific position tracks the behavior of the transcript that carries it — how long it lasts, how efficiently it is translated, and how that changes between conditions.
The measurement has two halves. One is the modification itself, which has to be resolved to a position to be tied to a specific site. The other is the transcript-level behavior, which comes from abundance, stability or translation readouts that the study provides or measures alongside.
The useful result is the alignment between the two: the same sites compared, in the same samples, against the same functional readout.
02Which route fits which mark
m6A Modification Seq (CAM-seq)
Site-level m6A with a ratio at each position, for relating a site to transcript behavior.
Site-levelposition & level m1Am1A Modification Seq (m1A-Quant-seq)
Absolute stoichiometry at each m1A site, quantitative enough for cross-condition comparison.
Absolutestoichiometry ΨPseudouridine (Ψ) Seq (BID-seq)
Position-level pseudouridine, for marks whose effect is studied at defined sites.
Site-levelposition ALL MARKSSingle-Base RNA Modification Sequencing
The full set of marks with a single-base method, if the mark of interest is not one of the above.
14 methodsone line03What the result looks like
- Site-level modification. Coordinate, host gene, functional region and ratio for each called position.
- Region annotation. Whether the site falls in a coding sequence, an untranslated region or near a splice junction, which is usually where the functional expectation sits.
- Cross-condition comparison. The same sites called in each condition, so the change in modification is readable against the change in transcript behavior.
- A level check. Where a difference carries the conclusion, LC-MS on isolated RNA gives an independent readout of nucleoside content.
04Aligning the two halves
- Fix the mark and the positions that matter, rather than starting from the whole transcriptome.
- Plan the functional readout in the same samples — abundance, stability or translation — so the two measurements describe the same material.
- Run the modification assay, then compare site ratios against the functional readout condition by condition.
- Confirm the level change with an independent method before it is used as the basis of a claim.
| What you want to show | Route | Request Quote |
|---|---|---|
| A site-level mark tracks a functional readout | Single-base sequencing | |
| The mark differs between conditions | Single-base sequencing, both conditions | |
| The level change is real | LC-MS on isolated RNA |
05FAQ
Do I need a translation assay as part of the service?
The modification side is what the service measures; the functional readout usually comes from the study's own experiments. What the service adds is that the modification is resolved to the positions those experiments refer to, so a translation or stability difference and a site ratio can be read against each other rather than pooled at transcript level.
Why is a site-level readout needed here?
Because a claim about a transcript usually names a position, and only a single-base method returns one. An enrichment profile describes a region, which is harder to attach to a specific functional expectation, so where the conclusion lands on a single nucleotide the design starts from a site-level route.
Can the comparison be made across many conditions?
Yes, provided the same sites are called in each condition and the conditions are run through one workflow, so a change in modification is not carried by a change in handling. That is a design question rather than a limit of the assay, and it is worth fixing before the samples are run.
What if the mark of interest has no single-base method?
Then the study is working at profile level, and the conclusion has to be stated at that level rather than as a statement about a position. The modification types page shows which marks can be resolved and which cannot, so the design can be set at the resolution the mark actually supports.