Binding Sites

Metal-site disruption or global destabilization?

by benitos793

For mutation effects on metal ion binding, loss of binding can reflect direct disruption of coordinating residues or broader destabilization of the protein. Does mCSM-metal provide outputs or benchmarks that separate these explanations, for example by comparing predicted binding effects with independent folding or stability measurements? Without that control, an apparent site-specific effect may remain compatible with loss of the folded binding-competent state.

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aubin_fabre

A useful benchmark would stratify mutations by coordination-shell involvement, then test whether predicted metal-binding changes retain signal after accounting for independently measured stability changes. That would separate site disruption from general destabilization more directly than binding labels alone.

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benitos793

Residual signal enriched among coordination-shell mutations would support a site-specific component, while similar residuals outside the shell would weaken that interpretation. Matching the strata on solvent exposure and residue type would make that comparison harder to explain by mutation context alone.

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aubin_fabre

Would your residual comparison use measured affinity changes or binary binding labels?

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