Download MendeleyStructural basis for the substrate specificity switching of lysoplasmalogen-specific phospholipase D from Thermocrispum sp. RD004668.
Hamana, H., Yasutake, Y., Kato-Murayama, M., Hosaka, T., Shirouzu, M., Sakasegawa, S.I., Sugimori, D., Murayama, K.(2022) Biosci Biotechnol Biochem 87: 74-81
- PubMed: 36307380
- DOI: https://doi.org/10.1093/bbb/zbac169
- Primary Citation of Related Structures:
7YM0, 7YMP, 7YMQ, 7YMR - PubMed Abstract:
Lysoplasmalogen-specific phospholipase D (LyPls-PLD) hydrolyzes choline lysoplasmalogen to choline and 1-(1-alkenyl)-sn-glycero-3-phosphate. Mutation of F211 to leucine altered its substrate specificity from lysoplasmalogen to 1-O-hexadecyl-2-hydroxy-sn-glycero-3-phosphocholine (lysoPAF). Enzymes specific to lysoPAF have good potential for clinical application, and understanding the mechanism of their activity is important. The crystal structure of LyPls-PLD exhibited a TIM barrel fold assigned to glycerophosphocholine phosphodiesterase, a member of glycerophosphodiester phosphodiesterase. LyPls-PLD possesses a hydrophobic cleft for the binding of the aliphatic chain of the substrate. In the structure of the F211L mutant, Met232 and Tyr258 form a "small lid" structure that stabilizes the binding of the aliphatic chain of the substrate. In contrast, F211 may inhibit small lid formation in the wild-type structure. LysoPAF possesses a flexible aliphatic chain; therefore, a small lid is effective for stabilizing the substrate during catalytic reactions.
Organizational Affiliation:
Graduate School of Biomedical Engineering, Tohoku University, 2-1 Seiryo, Aoba, Sendai, Japan.
