The Claim
Computational modeling using AlphaFold 3 predicts that substituting selenocysteine with cysteine in human selenoproteins preserves the overall three-dimensional fold in 19 of 25 proteins but disrupts or rewires intramolecular selenenyl-sulfide linkages in six proteins, indicating that selenium's functional role is localized to specific structural motifs rather than global protein stability.
What the research says
Not yet evaluated
We are still looking at what the research says.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Computer simulations show that replacing selenium-containing amino acids with sulfur-containing ones in 25 human proteins keeps the overall shape intact in 19 proteins but breaks or changes specific chemical bonds in six proteins, demonstrating that selenium's role is confined to particular structural sites.
See the scientific wording
Computational modeling using AlphaFold 3 predicts that substituting selenocysteine with cysteine in human selenoproteins preserves the overall three-dimensional fold in 19 of 25 proteins but disrupts or rewires intramolecular selenenyl-sulfide linkages in six proteins, suggesting selenium's role is localized to specific structural motifs rather than global stability.
Replacing selenium with sulfur in certain proteins keeps their overall shape intact but breaks specific chemical bonds that only selenium can form, which stops those proteins from working properly in redox reactions.
What the research says
1 studyComputers predicted that swapping selenium for sulfur in 25 human proteins usually keeps their shape the same, but in six cases, it breaks special bonds that might affect how they work — just like the claim says.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
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