Phosphoryl transfer reaction catalyzed by membrane diacylglycerol kinase: a theoretical mechanism study

Literature Information

Publication Date 2015-08-24
DOI 10.1039/C5CP03342J
Impact Factor 3.676
Authors

Yafei Jiang, Hongwei Tan, Jimin Zheng, Xichen Li, Guangju Chen, Zongchao Jia


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Abstract

Diacylglycerol kinase is an integral membrane protein which catalyzes phosphoryl transfer from ATP to diacylglycerol. As the smallest kinase known, it shares no sequence homology with conventional kinases and possesses a distinct trimer structure. Thus far, its catalytic mechanism remains elusive. Using molecular dynamics and quantum mechanics calculations, we investigated the co-factor and the substrate binding and phosphoryl transfer mechanism. Based on the analysis of density functional theory calculations, we reveal that the phosphorylation reaction of diacylglycerol kinase features the same phosphoryl transfer mechanism as other kinases, despite its unique structural properties. Our results further show that the active site is relatively open and able to accommodate ligands in multiple orientations, suggesting that the optimization of binding orientations and conformational changes would occur prior to actual phosphoryl transfer.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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