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- W4379523771 abstract "Structural genomics consortia established that protein crystallization is the primary obstacle to structure determination using x-ray crystallography. We previously demonstrated that crystallization propensity is systematically related to primary sequence, and we subsequently performed computational analyses showing that arginine is the most overrepresented amino acid in crystal-packing interfaces in the Protein Data Bank. Given the similar physicochemical characteristics of arginine and lysine, we hypothesized that multiple lysine-to-arginine (KR) substitutions should improve crystallization. To test this hypothesis, we developed software that ranks lysine sites in a target protein based on the redundancy-corrected KR substitution frequency in homologs. We demonstrate that three unrelated single-domain proteins can tolerate 5-11 KR substitutions with at most minor destabilization and that these substitutions consistently enhance crystallization propensity. This approach rapidly produced a 1.9 Å crystal structure of a human protein domain refractory to crystallization with its native sequence. Structures from bulk-KR-substituted domains show the engineered arginine residues frequently make high-quality hydrogen-bonds across crystal-packing interfaces. We thus demonstrate that bulk KR substitution represents a rational and efficient method for probabilistic engineering of protein surface properties to improve protein crystallization." @default.
- W4379523771 created "2023-06-07" @default.
- W4379523771 creator A5029997178 @default.
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- W4379523771 date "2023-06-06" @default.
- W4379523771 modified "2023-09-27" @default.
- W4379523771 title "Systematic enhancement of protein crystallization efficiency by bulk lysine-to-arginine (KR) substitution" @default.
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- W4379523771 doi "https://doi.org/10.1101/2023.06.03.543563" @default.
- W4379523771 hasPublicationYear "2023" @default.
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- W4379523771 hasAuthorship W4379523771A5029997178 @default.