CeleryKills

I come at this from a split toolkit: information systems by trade, but with the muscle memory of biological anthropology and an organic chemistry education. That mix probably explains why two papers, one on prebiotic metabolism, one on pre‑RNA information polymers, landed so hard for me. They don’t solve the origin of life. They do something subtler and more powerful: they turn two locked doors into doorways.

Paper 1 (metabolism): Springsteen, Krishnamurthy and colleagues showed that simple feeds like glyoxylate can drive linked, turning cycles under mild aqueous conditions that look like protometabolic analogs of the TCA cycle, generating CO₂ and amino‑acid precursors, including aspartate, with controlled turnover and without enzymes (H₂O₂ as oxidant, neutral pH) (Springsteen et al., Nature Communications, 2018). The key isn’t the specific intermediates; it’s the demonstration of sustainable cycles that run and re‑run in plausible settings. If you care about bottom‑up origins, that’s oxygen to the fire.

Paper 2 (information): Cafferty, Karunakaran, Schuster, and Hud argued, backed by a decade of bench work, that water‑soluble supramolecular polymers of paired and stacked heterocycles can self‑assemble into long rosette stacks in water, forming pre‑RNA candidates that address longstanding problems with immediate RNA‑first scenarios. Some of these heterocycles form glycosidic bonds with sugars and display controllable assembly, emergent homochirality, and gel formation under conditions that map to plausible environments. In short, a credible pre‑RNA pathway comes into view (Schuster et al., JACS, 2021).

What do they specifically solve?

Metabolism’s problem has never been ideas; it’s been mechanics. Can you make a cycle that turns, not a one‑shot flask trick? The glyoxylate work offers an experimental answer: yes, with linked oxidative decarboxylation cycles that regenerate feeds, channel carbon, and spit out biogenic handles like aspartate under simple conditions. You get a running network that starts to look like control of flux, which is what life does every millisecond (Springsteen et al., 2018).

Information’s problem has been RNA’s fragility and synthesis. The JACS perspective shows how alternative nucleobases can self‑assemble into long, stable, aqueous supramolecular polymers that are compatible with prebiotic chemistry and, crucially, bridge to ribose coupling and covalent backbones. That relieves a major constraint: you don’t have to conjure fully fledged RNA on day one. You can stage the problem, start with robust non‑covalent scaffolds, and then ratchet to covalent nucleic acids as chemistry and selection deepen (Schuster et al., 2021).

Why does this matter in the bigger picture?

Because origins work keeps colliding with the same triad: energy, matter, and information. Metabolism‑first and genetics‑first have often talked past each other, but these two papers sketch how the pieces could interlock. If protometabolic cycles can supply amino‑acid precursors and redox structuring, while pre‑RNA polymers provide templating and compartment‑friendly assemblies, you’re not waiting for miracles. You’re co‑evolving cycles and scaffolds until catalysts and inheritance cross a threshold.

If that sounds hand‑wavy, it shouldn’t. Consider how kinetically stable, thermodynamically activated phosphate currencies can run in wet–dry cycles and phosphorylate key building blocks using imidazole phosphate as an ATP‑like intermediate. That is now experimentally shown at ambient conditions and in paste phases, making phosphorylation chemistry realistic before enzymes (Maguire et al., Nature Communications, 2021). It even extends to histidyl‑peptide organocatalysts that mimic kinase logic and drive phosphate transfer with an ATP analogue in prebiotic scenarios (Maguire et al., JACS, 2024). Those aren’t the papers you gave me, but they line up with them like gears in a box.

Learn more: what each paper opens next

Metabolism door, ajar.
What happens when glyoxylate cycles are coupled to minerals and gradients we actually expect in Hadean settings? Can we stitch these cycles to known C₁/C₂ fixation chemistries and show network persistence across fluctuating pH, salinity, and temperature? If aspartate emerges reliably, what is the shortest path to pyrimidine precursors or cofactor scaffolds from that node, and can we demonstrate selection on cycle topology rather than on yield alone (Springsteen et al., 2018)?

Information door, ajar.
Which heterocycles and sugar choices give the best migration path from supramolecular stacks to covalent informational polymers in water, not just in drying films? How do these stacks interact with lipid vesicles or mineral surfaces, and do we see error‑tolerant templating before full replication? The JACS perspective points to controllable length distributions, symmetry breaking, and homochirality in gels. Can we harness those to bias sequence space or backbone selection in a staged pre‑RNA → RNA transition (Schuster et al., 2021)?

Together, what new room do they open?

The most interesting move is integration. Imagine a shoreline or geothermal setting cycling wet and dry. In the wet phase, glyoxylate cycles turn, feeding carbon and nitrogen into a small set of biased organics. In the drying phase, pre‑RNA rosette polymers concentrate, template, and occasionally link covalently. Phosphorylation currencies like imidazole phosphate carry energy across the boundary, while short histidyl‑rich peptides begin to look like organocatalytic proto‑enzymes. Do you get feedback, where better scaffolds stabilize better cycles, and better cycles feed better scaffolds? That’s not a fairy tale; it’s an experimental program you can run now, because the enabling steps have been demonstrated in isolation (Springsteen et al., 2018; Schuster et al., 2021; Maguire et al., 2021; Maguire et al., 2024).

What does this do to intelligent design arguments?

It narrows the gap that those arguments rely on. The ID playbook points to “irreducible complexity,” “missing energy logic,” or “no plausible precursors.” Here we have running chemical cycles without enzymes that turn over under mild conditions, and self‑assembling informational scaffolds that address the hardest part of RNA‑first: not just “make monomers,” but organize them and ratchet toward heredity. Add a growing literature on prebiotic phosphorylation currencies and ribozyme‑to‑DNA transitions, and the space for a design‑by‑default claim keeps shrinking (Springsteen et al., 2018; Schuster et al., 2021; Maguire et al., 2021; Cojocaru & Unrau, 2017). If testable chemistry can shoulder more of the explanatory load each year, why import untestable causes (or want to)?

Where I’d spend lab time next

Can we co‑culture these chemistries in a programmable bench environment that cycles humidity, temperature, and feedstocks, then use omics‑style analytics to track network drift over thousands of cycles? Could we instrument the system the way we instrument distributed systems: log the flows, visualize the bottlenecks, and let small selection pressures nudge it forward? With my IS brain, I want the dashboards; with my chemistry brain, I want the verified handoffs: glycolate‑to‑aspartate flux entering a pre‑RNA gel and making templated capture more likely, not less.

Do these two papers solve origin of life? Of course not. Do they lower the entropy of the problem by giving us working subsystems that can be coupled and tested? They do. And that is how big problems get smaller.

References

Springsteen, G., Yerabolu, J. R., Nelson, J., Rhea, C. J., & Krishnamurthy, R. “Linked cycles of oxidative decarboxylation of glyoxylate as protometabolic analogs of the citric acid cycle.” Nature Communications 9, 91 (2018).

Schuster, G. B., Cafferty, B. J., Karunakaran, S. C., & Hud, N. V. “Water‑Soluble Supramolecular Polymers of Paired and Stacked Heterocycles: Assembly, Structure, Properties, and a Possible Path to Pre‑RNA.” Journal of the American Chemical Society 143, 9279–9296 (2021).

Maguire, O. R., Smokers, I. B. A., & Huck, W. T. S. “A physicochemical orthophosphate cycle via a kinetically stable thermodynamically activated intermediate enables mild prebiotic phosphorylations.” Nature Communications 12, 5517 (2021). ]

Maguire, O. R., Smokers, I. B. A., Oosterom, B. G., Zheliezniak, A., & Huck, W. T. S. “A Prebiotic Precursor to Life’s Phosphate Transfer System with an ATP Analog and Histidyl Peptide Organocatalysts.” Journal of the American Chemical Society 146, 7839–7849 (2024).

Cojocaru, R., & Unrau, P. J. “Origin of life: Transitioning to DNA genomes in an RNA world.” eLife 6:e32330 (2017).

For the two focal papers, see the open‑access versions here:
Springsteen et al., 2018, Nature Communications PDF | Schuster et al., 2021, JACS PDF