Publications by authors named "J P Mittal"

Understanding the origin and effect of the confinement of molecules and transition states within the micropores of a zeolite can enable targeted design of such materials for catalysis, gas storage, and membrane-based separations. Linear correlations of the thermodynamic parameters of molecular adsorption in zeolites have been proposed; however, their generalizability across diverse molecular classes and zeolite structures has not been established. Here, using molecular simulations of >3500 combinations of adsorbates and zeolites, we show that linear trends hold in many cases; however, they collapse for highly confined systems.

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Breast cancer is a disease that has a 1 in 8 lifetime risk for women, making it an international burden. Although breast cancer mostly affects women, men have a lifetime risk of around 1 in 1000. The majority of breast cancer instances continue linked to breast cancers that have acquired somatic mutations during a person's lifespan.

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The self-assembly of intrinsically disordered proteins into biomolecular condensates shows a dependence on the primary sequence of the protein, leading to sequence-dependent phase separation. Methods to investigate this sequence-dependent phase separation rely on effective residue-level interaction potentials that quantify the propensity for the residues to remain in the dilute phase versus the dense phase. The most direct measure of these effective potentials are the distribution coefficients of the different amino acids between the two phases, but due to the lack of availability of these coefficients, proxies, most notably hydropathy, have been used.

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Article Synopsis
  • The incorporation of fluorinated amino acids into proteins allows for better understanding of biomolecular structures and functions.
  • A new method for site-specific integration of fluoroprolines into proteins has been developed, tested on a non-pathogenic version of the huntingtin protein.
  • Experimental findings reveal that the effects of fluoroproline variants on protein structure vary based on factors like stereochemistry and the specific amino acid sequence, with insights supported by molecular dynamics simulations.
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Article Synopsis
  • Biomolecular condensates exhibit viscoelastic properties that are crucial for their functions in cells, and understanding these properties can reveal how they are organized and behave in different physiological contexts.
  • Current methods for studying the viscoelastic behavior of these condensates are largely experimental and limited, prompting the need for better quantification techniques.
  • The study introduces a computational microrheology approach that utilizes a passive probe to analyze the viscoelasticity of intrinsically disordered proteins (IDPs), providing insights into how sequence variations impact their physical properties and functionalities.
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