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Proteins that create ice inspire 'cool' applications, from cryomedicine to artificial snow

Phys · · 415 words · By American Institute

Researchers from Aarhus University and Oregon State University studied ice-nucleating proteins (INPs) from Pseudomonas syringae bacteria. They discovered that these proteins can bind to artificial surfaces in a structured manner similar to natural surfaces, potentially aiding applications in cryomedicine and artificial snow production.

open_in_new Read the original article: https://phys.org/news/2026-05-proteins-ice-cool-applications-cryomedicine.html

analyticsAnalysis

0%
Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkFact-Check Results

9 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

info Single Source 6
verified Verified 2
help Insufficient Evidence 1
info
“Bacteria from the Middle East have caused precipitation all the way out in California.”
SINGLE SOURCE
The provided web search results for 'Middle East' are general definitions and historical context; they contain no information linking bacteria from the Middle East to precipitation in California.
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web search NEUTRAL — The Middle East, if I may adopt a term which I have not seen, will some day need its Malta, as well as its Gibraltar; it does not follow that either will be in the Persian Gulf.
https://en.wikipedia.org/wiki/Middle_East
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web search NEUTRAL — The origin story for this rift is that dentistry began, in the middle ages, as a trade – with tooth extractions handled by “barber surgeons” and dentures crafted by jewellers and blacksmiths.
https://www.theguardian.com/society/2026/may/11/mouth-gatewa…
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web search NEUTRAL — Why is it Called the Middle East? The term "Middle East" originated from the same European perspective that described Eastern Asia as "the Far East." The Middle East denotes the transcontinental area …
https://www.worldatlas.com/articles/why-is-it-called-the-mid…
info
“The same bacteria, which are known to attack plants, have also been found embedded within lumps of hail in West Africa.”
SINGLE SOURCE
While evidence confirms Pseudomonas syringae is a plant pathogen, there is no mention in the provided evidence of these bacteria being found in hail in West Africa.
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web search NEUTRAL — Pseudomonas syringae is a rod-shaped, Gram-negative bacterium with polar flagella.Pseudomonas syringae pathogenesis is dependent on effector proteins secreted into the plant cell by the bacterial type…
https://en.wikipedia.org/wiki/Pseudomonas_syringae
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web search NEUTRAL — Pseudomonas is the name of a whole genus covering many different species of bacteria. Second, you may have noticed we’re not in a drought anymore on the West Coast. We’re entering the second week of r…
https://owlcation.com/stem/the-rainmaker-pseudomonas-syringa…
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web search NEUTRAL — Pseudomonas syringae is one of the best-studied plant pathogens and serves as a model for understanding bacterial pathogenicity, molecular mechanisms of plant-microbe interactions as well as microbial…
https://pmc.ncbi.nlm.nih.gov/articles/PMC5972017/
verified
“Called Pseudomonas syringae, these bacteria contain ice-nucleating proteins (INPs), molecules that lead to ice formation.”
VERIFIED
Multiple sources confirm that Pseudomonas syringae is a plant pathogen and that ice-nucleating proteins (INPs) found in bacteria enable the crystallization of water.
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web search NEUTRAL — Pseudomonas is a genus of Gram-negative bacteria belonging to the family Pseudomonadaceae in the class Gammaproteobacteria.
https://en.wikipedia.org/wiki/Pseudomonas
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web search NEUTRAL — A Pseudomonas infection develops when Pseudomonas bacteria enter your body. Symptoms depend on the infection’s location. Treatment usually includes antibiotics.
https://my.clevelandclinic.org/health/diseases/25164-pseudom…
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web search NEUTRAL — Jan 5, 2025 · Pseudomonas is a type of bacteria that's commonly found outdoors, such as in soil and water. It can also thrive in moist places indoors. Some types of this germ, especially Pseudomonas..…
https://www.webmd.com/a-to-z-guides/pseudomonas-infection
verified
“These INPs are the most potent known initiators of ice growth, but only naturally bind to organic surfaces.”
VERIFIED
Evidence explicitly states that INPs found in bacteria are the 'most effective ice nucleators known' and describes their function in templating water molecules.
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web search NEUTRAL — Although different ice nucleating proteins (INPs) have been discovered on naturally formed ice, many organisms possess antifreeze proteins (AFPs) which are structurally similar to INPs and yet prevent…
https://pmc.ncbi.nlm.nih.gov/articles/PMC12091574/
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web search NEUTRAL — Ice-nucleating proteins (INPs) found in bacteria are the most effective ice nucleators known, enabling the crystallization of water at temperatures close to 0°C. Although their function has been known…
https://www.academia.edu/145859331/Water_organizing_motif_co…
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web search NEUTRAL — Ice-nucleating proteins limit supercooling and trigger ice nucleation at elevated subzero temperatures. This is probably because the ice-binding surface of INPs templates the organization of water mol…
https://pubs.rsc.org/en/content/articlehtml/2017/sm/c6sm0286…
info
“In Biointerphases, researchers from Aarhus University, in Denmark, and Oregon State University studied whether these proteins can bind to artificial surfaces in the same structured way as they do to cell membranes.”
SINGLE SOURCE
The evidence mentions the journal Biointerphases and Oregon State University, but does not provide the specific study details or the collaboration with Aarhus University regarding INPs on artificial surfaces.
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web search NEUTRAL — the researchers studied ultrasound images of about 70 pregnant women.
https://journals.sagepub.com/doi/10.1177/09567976221105460
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web search NEUTRAL — Oregon's best public research university. Oregon State is the most innovative university in the state of Oregon, advancing research in critical areas like climate science, robotics, clean energy, and …
https://oregonstate.edu/
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web search NEUTRAL — 2026 overview of the journal Biointerphases. Explore impact factor, rankings, scope, publisher details, and key research areas based on Research.com journal data.
https://research.com/journal/biointerphases
info
“They found the proteins connect to a surface in a layer of single molecules with their ice formation side facing out, allowing ice to grow atop the surface.”
SINGLE SOURCE
The evidence describes how INPs arrange water molecules into ice-like structures, but does not specifically confirm the 'single-molecule layer' binding orientation on artificial surfaces mentioned in the claim.
travel_explore
web search NEUTRAL — for ice formation by arranging water molecules into an “ice-like” structure.7–9 As a result, these INPs can promote ice nucleation at temperatures as warm as −2 °C, leading to disruptions in the cell …
https://pubs.rsc.org/en/content/articlepdf/2025/sc/d4sc08383…
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web search NEUTRAL — Bacterial INPs are so good at making ice that ski resorts often use a commercial snowmaking product, called Snowmax, which consists of INPs bound to inactivated or dead P. syringae to start the crysta…
https://learnfinite.com/ca/the-fungi-that-can-freeze-water-b…
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web search NEUTRAL — April 2, 2020 The Lancet Aerosol and Surface Stability of SARS-CoV-2...
https://www.thelancet.com/journals/lanmic/article/PIIS2666-5…
info
“for both artificial and natural surfaces, the INPs bind in remarkably similar ways, at similar thicknesses, in similar arrangements, and with similar levels of coverage.”
SINGLE SOURCE
The provided evidence for this claim is irrelevant (discussing urban plans and general knowledge platforms) and does not address INP binding to surfaces.
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web search NEUTRAL — Too bad transmission via surfaces seems to be highly implausible.
https://www.thelancet.com/journals/laninf/article/PIIS1473-3…
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web search NEUTRAL — Natural. Artificial. Collective.", running from May 24th to November 23rd, 2025.Objects, buildings, and urban plans will be arranged along the axis of multiple and widespread intelligence – organized …
https://www.archdaily.com/1016290/natural-artifical-and-coll…
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web search NEUTRAL — Quora is a place to gain and share knowledge. It's a platform to ask questions and connect with people who contribute unique insights and quality answers. This empowers people to learn from each other…
https://www.quora.com/
info
“INPs are very long proteins, so the researchers used a truncated version in their studies”
SINGLE SOURCE
While evidence confirms INPs are biological macromolecules and can form fibers, there is no specific mention of researchers using a 'truncated version' for the study in question.
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web search NEUTRAL — Ice-nucleating proteins (INPs) are a unique class of biological macromolecules that catalyze the freezing of supercooled water with remarkable efficiency, exceeding that of most other known heterogene…
https://pubmed.ncbi.nlm.nih.gov/41511029/
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web search NEUTRAL — These microorganisms utilize specialized ice-nucleating proteins (INPs) located on their outer membrane to mimic water molecules into ice-like structures. But in order to serve as effective templates …
https://phys.org/news/2024-10-ice-nucleating-proteins-uncove…
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web search NEUTRAL — Self-assembly of bacterial ice nucleation proteins is required for efficient activity and is mediated by electrostatic interactions, creating long and thin fibres.
https://elifesciences.org/articles/91976
help
“The binding and orientation of ice nucleating proteins on hydrophilic and hydrophobic surfaces probed by photoelectron spectroscopies, Biointerphases (2026). DOI: 10.1116/6.0005223”
INSUFFICIENT EVIDENCE
No evidence was found for the specific paper title or DOI provided.
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.