Claude spots CRISPR-like DNA repeats beside a known enzyme

1 month ago

From the Hacker News front page: Claude finds a CRISPR-like enzyme system; The Portobello Police Station clock; Jev in 25 lines of Python; What VSCode installs over SSH; and Gemini 3.8 text-to-speech. Claude discovers a novel enzyme system with CRISPR-like repeats https://www.anthropic.com/news/claude-discovers-novel-enzyme-system — pre-print linked from the post Discussion, about 780 points and about 800 comments: https://news.ycombinator.com/item?id=49820134 Fixing the Portobello Police Station Clock https://pointinthecloud.com/2026-04-11-211700.html Discussion, about 540 points and about 120 comments: https://news.ycombinator.com/item?id=49817469 Jev in 25 Lines of Python https://www.nobodywho.ai/posts/jev-in-25-lines/ — the post signs off as parody Discussion, about 680 points and about 210 comments: https://news.ycombinator.com/item?id=49812769 VSCode's SSH Agent Is Bananas (2025) https://fly.io/blog/vscode-ssh-wtf/ — February 2025 Discussion, about 310 points and about 220 comments: https://news.ycombinator.com/item?id=49822555 Gemini 3.8 text-to-speech https://blog.google/innovation-and-ai/models-and-research/gemini-models/gemini-3-8-text-to-speech/ Discussion, about 330 points and about 150 comments: https://news.ycombinator.com/item?id=49817615 The front page that day: https://news.ycombinator.com/front?day=2026-09-23

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Chapters

  1. 0:00Front page
  2. 0:13A wet lab and one prompt
  3. 0:28What the search cost
  4. 0:45An array of repeats
  5. 1:01The sober framing
  6. 1:11A pawl and a counter
  7. 1:26Reading the status light
  8. 1:39Classification from the logits
  9. 1:54Where the trick leaks
  10. 2:07What lands on the remote box
  11. 2:22Or: that is the feature
  12. 2:35Voices you pick, design or copy
  13. 2:49A change of nerve
Show transcript
  1. At the top of the Hacker News front page, with about seven hundred eighty points: Anthropic says Claude agents spotted DNA repeats, laid out like a CRISPR array, beside a known enzyme in public sequence data.

    Slide text
    Wednesday, September 23, 2026

    Claude spots CRISPR-like DNA repeats beside a known enzyme

    Also on the front page
    • The Portobello Police Station clock
    • Jev in 25 lines of Python
    • What VSCode installs over SSH
    • Gemini 3.8 text-to-speech
  2. Anthropic has stood up a life sciences group with a molecular biology bench. They pointed Claude at a database of DNA sequences and asked for interesting reverse transcriptases. The scientists supplied the prompt and the bench work.

    Slide text
    Hacker News

    Claude discovers a novel enzyme system with CRISPR-like repeats

    The lab
    A new life sciences research group at Anthropic, with its own molecular biology bench in the Bay Area.
    The brief
    Search a massive database of DNA sequences for interesting new reverse transcriptases — the enzymes that copy RNA back into DNA.
    The human part
    The opening prompt, and the bench work. Everything between was agents.
  3. The agents gathered more than two hundred thousand of those enzymes, cut them to thirty five hundred candidate systems, and wrote up the best twenty for a scientist to check. Roughly nine hundred fifty agents took twenty one hours. Anthropic says an expert can spend weeks to months.

    Slide text
    Hacker News

    From 200,000 enzymes to 20 reports

    200,000+
    reverse transcriptases gathered
    Cut to 3,500 candidate systems, then to the 20 most compelling, each written up as a report a scientist could check.
    21 hours
    for roughly 950 agents
    Using 210 million tokens. Anthropic says this kind of analysis can take an expert weeks to months.
  4. The agent saw a tandem repeat array, laid out like a CRISPR array, beside an odd looking enzyme. Anthropic calls the three part system ART. The repeats get transcribed into a set of short RNA strands. Its function is still open.

    Slide text
    Hacker News

    The thing it stopped on

    The pattern
    A tandem repeat array sitting next to the gene for an odd-looking reverse transcriptase.
    The system
    Three parts: that enzyme, a partner gene of unknown function, and a long array of evenly spaced repeats. Mostly in bacteriophages.
    Open
    First experiments show the array is expressed as a set of distinct short RNAs. Its function is still unknown.
  5. Commenter Spacecosmonaut offers a plainer wording, and the post backs it. The enzyme itself was already in the literature. The arrangement around it is the new part.

    Slide text
    Hacker News

    In the thread

    “Claude identified a previously undescribed genomic arrangement around a known reverse transcriptase.”

    Spacecosmonaut, offering a plainer wording
  6. A community group bought an old police station and could not set the tower clock. The fix was a small lever on one gear, called a pawl. Lift it, and the shaft turns by hand. The chime box holds no clock at all, just an hour counter.

    Slide text
    Hacker News

    Fixing the Portobello Police Station Clock

    The ask
    A community group bought the old station and could not work out how to change the time on the tower clock.
    The clock
    Building began in 1877, and the mechanism may be original. Lift the pawl, a catch on one gear, and the shaft turns by hand.
    The chime
    An unmarked box holding a microcontroller date-coded around 2001. No clock inside it — an hour counter, nudged by a switch on the shaft.
  7. The box blinks a status code the pair ran out of afternoon to decode. Commenter SaberTail reads it as Morse. Dash dash dot dot dot really is seven, though whether the box means the hour stays a guess.

    Slide text
    Hacker News

    In the thread

    “Long-long-short-short-short is 7 in morse code.”

    SaberTail, on the box's blinking status light
  8. A spam classifier in twenty five lines of Python, a parody of the hype around Jev. A small local model reads an email asking for a password, and only its scores for the letters A, B and C count. Phishing comes out at almost ninety percent.

    Slide text
    Hacker News

    Jev in 25 Lines of Python

    88.5%
    chance of phishing, by the model’s own scores
    A 0.6-billion-parameter Qwen3 model reads an email asking for a password, scored only on the letters A, B and C: 8.4% spam, 3.1% legitimate.
  9. Commenter sigmoid10 names the catch, and the post is doing exactly the thing described. A chat model wants to answer in prose, so the letter you measure competes with the sentence it meant to write.

    Slide text
    Hacker News

    In the thread

    “So your ‘choice’ tokens and thus their probabilities might get diluted in whatever else it wanted to say.”

    sigmoid10, on reading logits off a chat model
  10. Emacs has done remote editing for decades, living off the land on the connection. VSCode instead stages in an agent and its own copy of Node, which opens a socket back to your editor and can roam the filesystem, spawn shells, and persist.

    Slide text
    Hacker News

    VSCode’s SSH Agent Is Bananas

    Emacs Tramp
    Lives off the land. Runs Bourne shell commands down the connection you already have.
    VSCode
    A Bash stager downloads an agent, plus its own binary install of Node, onto the remote host.
    Then
    The agent opens a WebSocket back to your editor that can roam the filesystem, edit files, launch shell processes, and persist itself.
  11. Commenter 10000truths pushes back. A tool built to edit files and run commands on a remote machine doing precisely that is the feature, and the tunnel may be the only route the agent has.

    Slide text
    Hacker News

    In the thread

    “VSCode can't assume that your remote machine can access the wider internet.”

    10000truths, on why the agent ships down the tunnel
  12. Google released two text to speech models. You can pick from more than two thousand ready-made voices, or describe a new one in plain words. Copying a real voice takes a thirty second sample, plus a recorded consent clip from its owner.

    Slide text
    Hacker News

    Gemini 3.8 Flash TTS and Flash-Lite TTS

    2,000+
    ready-made voices
    Or design a new one in plain words — role, accent, character — across more than 100 languages.
    30 seconds
    of audio to copy a voice
    Plus a recorded consent clip from the voice’s owner. Every clip is watermarked with SynthID.
  13. Commenter simonw puts the release down to a change of nerve rather than a change of capability. Cloning a voice is ordinary enough elsewhere that shipping it costs Google little.

    Slide text
    Hacker News

    In the thread

    “I guess voice cloning is widely enough available now from other providers that Google are no longer hesitant to ship it.”

    simonw, on the timing

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