In a library holding different editions of the same book, you used to be able to read only scraps of pages. That's how the old methods worked: they saw tiny pieces of RNA molecules and couldn't piece together the full text of a gene. Yet in the human brain, a single gene can exist in thousands of versions, like one book in different translations.
The SALRR platform works like an assembly line in a print shop. A Hamilton robot prepares the samples, and the Snakemake software pipeline assembles long reads into complete transcripts. Previously, one person could manually process 8 samples a day; now the robot handles 24. And the key point: it reads each RNA molecule in full, not in fragments.
Why does this matter? Brain diseases such as Alzheimer's are often linked not to the gene itself but to which particular version of that gene is active in the cell. Previously, these variants were indistinguishable. Now the pipeline reads the book from cover to cover, and we can see all the editions.
The median poly(A) tail length of nuclear transcripts was 143 nucleotides, while that of mitochondrial transcripts was just 41, reflecting a known feature of mitochondrial mRNAs.
In Greg Egan's novel Permutation City, copying a mind requires fully decoding the molecular states of neurons; SALRR brings reality closer to that level of detail by revealing isoform diversity that was previously invisible.
Not published on arXiv. Here are its page, the PDF and the formalization: you can check it yourself, not only read our account.