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- W2024096723 endingPage "2213" @default.
- W2024096723 startingPage "2203" @default.
- W2024096723 abstract "Protein structure and dynamics are crucial for protein function. Thus, the study of conformational properties can be very informative for characterizing new proteins and to rationalize how residue substitutions at specific protein sites affect its dynamics, activity and thermal stability. Here, we investigate the structure and dynamics of the recently isolated cold-adapted acylaminoacyl peptidase from Sporosarcina psychrophila (SpAAP) by the integration of simulations, circular dichroism, mass spectrometry and other experimental data. Our study notes traits of cold-adaptation, such as lysine-to-arginine substitutions and a lack of disulphide bridges. Cold-adapted enzymes are generally characterized by a higher number of glycine residues with respect to their warm-adapted counterparts. Conversely, the SpAAP glycine content is lower than that in the warm-adapted variants. Nevertheless, glycine residues are strategically located in proximity to the functional sites in SpAAP, such as the active site and the linker between the two domains.. In particular, G457 reduces the steric hindrance around the nucleophile elbow. Our results suggest a local weakening of the intramolecular interactions in the cold-adapted enzyme. This study offers a basis for the experimental mutagenesis of SpAAP and related enzymes. The approaches employed in this study may also provide a more general framework to characterize new protein structures in the absence of X-ray or NMR data." @default.
- W2024096723 created "2016-06-24" @default.
- W2024096723 creator A5006808667 @default.
- W2024096723 creator A5012807945 @default.
- W2024096723 creator A5023376117 @default.
- W2024096723 creator A5062442747 @default.
- W2024096723 creator A5089976447 @default.
- W2024096723 date "2014-12-01" @default.
- W2024096723 modified "2023-10-14" @default.
- W2024096723 title "Structural investigation of the cold-adapted acylaminoacyl peptidase from Sporosarcina psychrophila by atomistic simulations and biophysical methods" @default.
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