SARS-CoV-2 spike protein, Delta vs Omicron variants, with point-cloud Halo analysis of the RBD
For Virology

A new virus emerges. We start with its cavities.

When a novel pathogen or variant appears, there is a genome long before there are structures, targets or drugs. Innophore’s Catalophore™ point-cloud technology maps every binding site across a viral proteome — to repurpose approved drugs, design broad-spectrum antivirals and track variant escape, in days rather than years.

210Atomistic 3D models of the circulating monkeypox proteome, built within a year of the 2022 outbreak
2Approved drugs identified — and in-vitro validated — as SARS-CoV-2 inhibitors by cavity similarity
VOC-awareSpike–hACE2 binding affinity scored across SARS-CoV-2 variants of concern
01 — The Challenge

Outbreaks move in weeks. Antiviral pipelines move in years.

A new virus or variant is sequenced within days — but a sequence is not a drug target. Developing a novel antiviral takes 10–15 years, and roughly 30% of trials fail over side effects. The bottleneck is the binding site: which viral pockets are druggable, which approved drugs already fit them, and how those pockets shift as the virus mutates.

The genome

Sequence, no structure

An emerging pathogen yields thousands of open reading frames, but no experimental structures and no validated targets — the starting point for any therapy is missing.

The blind spot

Druggable cavities

Viral targets often share little sequence or fold with anything characterized. Sequence search misses the approved drugs whose binding sites already match — and the cross-species pockets that enable broad-spectrum design.

The moving target

Variants & resistance

Spike mutations reshape the receptor interface; protease mutations erode antiviral efficacy. A target that worked last season can escape the next.

Two proteins that share no evolutionary ancestry can still develop pockets shaped alike. Sequence-based methods never see it — cavity similarity does.

The convergent-cavity principle
02 — The Approach

From a viral genome to a searchable map of every binding site.

Catalophore™ predicts and curates a virus’s structural proteome, then describes each binding pocket as a 3D point-cloud signature of its physico-chemical property fields. Those signatures are searched against approved drugs and the proteome — independent of sequence, fold or family — to surface inhibitors, repurposing candidates and off-target risks. The same engine behind our pharma and enzyme work, pointed at pathogens.

Viral genome / new variant input
Catalophore™ cavity analysis
Antivirals · repurposing · decoys output
Precisionmatters.

For an emerging pathogen, the cavity map is built on AI-predicted structures — and AI structure prediction still gets the chemistry wrong often enough to matter: by one benchmark, chirality errors occur in 4.4% of cases. At proteome scale, that is thousands of subtly wrong binding sites feeding into a drug-discovery decision.

That is why every structure entering a cavitome is energy-minimized, refined and curated — not taken on faith. When the question is which antiviral to advance, the inputs have to be right.

On the limits of AI stereochemistry — Steinkellner, Kroutil, Gruber & Gruber, Nature 637, 548 (Correspondence, 2025) ↗
03 — The Workflow

From an emerging genome to an antiviral candidate.

One continuous path — the same response whether it is a new variant or a never-seen pathogen.

Upstream

Emerging pathogen

A new genome or variant — thousands of open reading frames, no experimental structures, no validated targets.

output → sequences · ORFs
Catalophore™

Cavity analysis

Models and curates the structural proteome, maps every binding site as a point cloud, and searches approved drugs and the proteome for matches — ligand-agnostic.

output → targets + inhibitors + evidence
Downstream

Antiviral candidates

Repurposed drugs, broad-spectrum leads, variant-aware decoys and prioritized vaccine / drug-target sites.

input ← ranked candidates
04 — Fighting a pandemic

From the first genome to a drug target — in hours.

When SARS-CoV-2 emerged, we did not wait for a pipeline. We turned cavity science on the live outbreak — in real time, and in public.

Military convoy during the early COVID-19 lockdown, 2020

In January 2020 — within hours of the first SARS-CoV-2 genome being published — we built a homology model of the viral main protease (Mpro) and screened for inhibitors of its active site. That is the exact target Pfizer’s Paxlovid (nirmatrelvir) would be approved against two years later.

Live structural-bioinformatics outbreak log · 23 January 2020

Day zero

A public log from the outbreak

The day the genome (GenBank MN908947) was released, we published a time-stamped structural-bioinformatics log — protease models, cavity analyses and candidate inhibitors, openly shared with the research community.

Downloaded ×10,000s

Models the world used

Our open Mpro models were downloaded tens of thousands of times — kickstarting a partnership with the Chinese Center for Disease Control and Prevention together with Pharmaron (Beijing HQ), and used by Insilico Medicine.

JEDI finalist

A billion molecules against COVID-19

Finalist in the JEDI “Billion Molecules against COVID-19” Grand Challenge, alongside Harvard Medical School (VirtualFlow) and Google Cloud — ultra-large screens across 17 viral targets.

14M+ · virus.watch

Real-time variant tracking

We screened over 14 million variant proteins on AWS and ran virus.watch, a real-time SARS-CoV-2 variant-monitoring system built with the AWS Diagnostic Development Initiative.

In the press: “Open for outbreaks”, Nature Biotechnology ↗ · “The pandemic pipeline”, Nature Biotechnology ↗ · WIRED, August 2020 ↗

05 — Applications

Proven on real pathogens, in peer-reviewed work.

Cavity-based virology is not a concept. It has been applied to SARS-CoV-2, monkeypox and arboviruses — and published.

Drug repurposing

Approved drugs as antivirals

DrugSolver CavitomiX flagged flufenamic acid and fusidic acid as SARS-CoV-2 inhibitors — despite under 5% sequence and near-zero structural identity to the viral targets — then confirmed them in vitro.

Hetmann et al., fusidic & flufenamic acid as SARS-CoV-2 inhibitors via DrugSolver CavitomiX.
Scientific Reports 13, 11783 (2023) ↗
Broad-spectrum & safety

Antivirals by design

A genetic algorithm refines inhibitors of the chikungunya nsP3 ADP-ribose site for reduced off-target activity and breadth across viral variants and species — safe, broad antivirals for arboviral diseases.

Parigger et al., CavitOmiX Drug Discovery: engineering antivirals with enhanced spectrum and reduced side effects.
Viruses 16, 1186 (2024) ↗
Structural proteome

A whole virus, modeled

A consensus structural proteome of the circulating monkeypox virus: 3,713 genomes distilled into 210 atomistic protein models, with a mutational analysis of the tecovirimat and brincidofovir binding sites.

Parigger et al., AI-assisted structural consensus-proteome prediction of human monkeypox viruses.
Microbiology Spectrum 11 (2023) ↗
Variant tracking

Scoring spike escape

Structural-bioinformatics scoring of spike–hACE2 affinity across variants of concern flagged Omicron’s elevated receptor binding — building on the earlier discovery that residue S477 governs the interface.

Durmaz et al., higher hACE2 affinity for Omicron RBD (2022); Singh et al., role of Serine 477 (2021).
Sci. Rep. 12 (2022) ↗ · Sci. Rep. 11 (2021) ↗
Resistance monitoring

Watching the protease

Tracking the mutational dynamics of the SARS-CoV-2 main protease (Mpro) revealed an emerging danger of resistance to Mpro-targeting antiviral drugs — early warning from structure.

Parigger et al., mutational dynamics of the SARS-CoV-2 main protease and antiviral resistance.
Frontiers in Medicine 9 (2022) ↗
Therapeutic decoys

Variant-proof biologics

Deep-learning-guided molecular dynamics optimized soluble hACE2-Fc decoys (e.g. K31W) that capture SARS-CoV-2 regardless of spike mutation — validated by virus-neutralization assays.

Köchl et al., optimizing variant-specific therapeutic SARS-CoV-2 decoys.
Scientific Reports 13 (2023) ↗
06 — Proof

A decade of structural virology, run at proteome scale.

The same patented, GPU-accelerated Catalophore™ engine behind our pharma and enzyme work has a deep, published track record on viral targets — from the first weeks of COVID-19 to the 2022 monkeypox outbreak and arboviral threats.

10.5M
SARS-CoV-2 genome sequences analyzed for resistance monitoring (GISAID, 2022).
276,000
GPU hours computed on NVIDIA A100 (AWS).
100M
CPU hours computed jointly with Harvard on Google Cloud.
50B
Docking instances across 17 SARS-CoV-2 targets in a multi-pronged virtual screen.
3,713
Monkeypox genomes distilled into a consensus structural proteome.
210
Atomistic viral protein models released for drug & vaccine work.
14M+
SARS-CoV-2 variant proteins modeled and screened on AWS.
2
Approved drugs validated in vitro as SARS-CoV-2 inhibitors via cavity search.

Fusidic acid and flufenamic acid share under 5% sequence identity and almost no structural similarity with the SARS-CoV-2 targets they inhibit. Only a cavity-based search could have found them.

Repurposing beyond sequence & fold
2024

A community effort in SARS-CoV-2 drug discovery

Molecular Informatics 43 — international consortium, incl. Innophore

2023

AI-assisted structural consensus-proteome prediction of human monkeypox viruses

Microbiology Spectrum 11 — 210-protein structural proteome of the 2022 outbreak

2023
2021

A multi-pronged approach targeting SARS-CoV-2 proteins using ultra-large virtual screening

iScience 24, 102021 — 17 targets, 45 screens, 50 billion docking instances

Selected peer-reviewed publications with Innophore authorship. Full list at Technology › Publications.

07 — Built to Integrate

An early response, on demand.

CavitOmiX is a pipeline, not a one-off study. Submit a viral target or a whole proteome and retrieve ranked repurposing candidates and inhibitors — through a standard API, ready for your screening and modeling stack.

  • API

    Standard REST API

    Submit viral structures, retrieve ranked cavity matches and repurposing hits.

  • I/O

    Model-ready outputs

    Candidate lists formatted to drop straight into downstream docking and safety pipelines.

  • Pathogen-agnostic

    The same workflow for SARS-CoV-2, poxviruses or the next emerging threat.

cavitomix · api
# scan a viral target for repurposing candidates
POST /v1/cavity/scan
{
  "structure": "<viral_target.pdb>",
  "site":      "active-site",
  "library":   "approved-drugs"
}

# → ranked candidates + rationale
{
  "matches": [
    { "drug": "fusidic acid",
      "similarity": 0.89,
      "evidence": "cavity" }
  ]
}
08 — Two Ways In

Bring us a virus.

Whether you respond to outbreaks or build the platforms behind antiviral discovery — there’s a way in.

For antiviral & public-health programs

Request a pilot

Bring a target or an emerging pathogen. We map its proteome’s cavities and return repurposing and lead candidates with structural evidence.

Start a pilot
For platform & research partners

Explore integration

Add proteome-wide cavity search to your antiviral or vaccine pipeline via a standard API.

Talk integration