Screened Coulomb potentials implicit solvent model

Continuum solvent model for biomolecular simulations

SCP-ISM, or screened Coulomb potentials implicit solvent model, is a continuum approximation of solvent effects for use in computer simulations of biological macromolecules, such as proteins and nucleic acids, usually within the framework of molecular dynamics.[1] It is based on the classic theory of polar liquids, as developed by Peter Debye and corrected by Lars Onsager to incorporate reaction field effects.[1] The model can be combined with quantum chemical calculations to formally derive a continuum model of solvent effects suitable for computer simulations of small and large molecular systems. The model is included in the CHARMM molecular mechanics code.[2]

## References

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1. ^ a b Hassan, Sergio A.; Guarnieri, Frank; Mehler, Ernest L. (2000-07-01). "A General Treatment of Solvent Effects Based on Screened Coulomb Potentials". The Journal of Physical Chemistry B. 104 (27): 6478–6489\. doi:10.1021/jp993895e. ISSN 1520-6106.
2. ^ "scpism (c48b2) | CHARMM". academiccharmm.org. Retrieved 2025-03-03.

## External links

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* An essay on SCP-ISM
* CHARMM website

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