Understanding of the roles of phospholipase D and phosphatidic acid through their binding partners.
Phospholipase D (PLD) is a phosphatidyl choline (PC)-hydrolyzing enzyme that generates phosphatidic acid (PA), a lipid second messenger that modulates diverse intracellular signaling. Through interactions with signaling molecules, both PLD and PA can mediate a variety of cellular functions, such as, growth/proliferation, vesicle trafficking, cytoskeleton modulation, development, and morphogenesis. Therefore, systemic approaches for investigating PLD networks including interrelationship between PLD and PA and theirs binding partners, such as proteins and lipids, can enhance fundamental knowledge of roles of PLD and PA in diverse biological processes. In this review, we summarize previously reported protein-protein and protein-lipid interactions of PLD and PA and their binding partners. In addition, we describe the functional roles played by PLD and PA in these interactions, and provide PLD network that summarizes these interactions. The PLD network suggests that PLD and PA could act as a decision maker and/or as a coordinator of signal dynamics. This viewpoint provides a turning point for understanding the roles of PLD-PA as a dynamic signaling hub.
School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, Pohang, Kyungbook 790-784, South Korea.
Jin-Hyeok
JH
Jang
Chang Sup
CS
Lee
Daehee
D
Hwang
Sung Ho
SH
Ryu
D001692:Biological Transport; D003599:Cytoskeleton; D020558:GTP Phosphohydrolases / Q000378:metabolism; D006801:Humans; D010712:Phosphatidic Acids / Q000737:chemistry / Q000378:metabolism*; D010739:Phospholipase D / Q000737:chemistry / Q000378:metabolism*; D011485:Protein Binding; D060066:Protein Interaction Maps; D011494:Protein Kinases / Q000378:metabolism; D015398:Signal Transduction
D010712:Phosphatidic Acids; D011494:Protein Kinases; D010739:Phospholipase D; D020558:GTP Phosphohydrolases