Regulatory mechanisms triggered by enzyme interactions with lipid membrane surfaces

J Yu, DD Boehr - Frontiers in Molecular Biosciences, 2023 - frontiersin.org
Recruitment of enzymes to intracellular membranes often modulates their catalytic activity,
which can be important in cell signaling and membrane trafficking. Thus, re-localization is …

Stressed lipid droplets: How neutral lipids relieve surface tension and membrane expansion drives protein association

S Kim, MI Oh, JMJ Swanson - The Journal of Physical Chemistry …, 2021 - ACS Publications
Lipid droplets (LDs) are intracellular storage organelles composed of neutral lipids, such as
triacylglycerol (TG), surrounded by a phospholipid (PL) monolayer decorated with specific …

Membrane lipids assist catalysis by CTP: phosphocholine cytidylyltransferase

RB Cornell - Journal of molecular biology, 2020 - Elsevier
While most of the articles in this issue review the workings of integral membrane enzymes, in
this review, we describe the catalytic mechanism of an enzyme that contains a soluble …

Phospholipid synthesis in mammalian cells

ND Ridgway - Biochemistry of lipids, lipoproteins and membranes, 2021 - Elsevier
Phospholipids are the primary building blocks of biological membranes, are secreted in
protein–lipid complexes and serve as precursors in cell signalling. The functional diversity of …

Lipid-and phospho-regulation of CTP: Phosphocholine Cytidylyltransferase α association with nuclear lipid droplets

J Foster, M McPhee, L Yue, G Dellaire… - Molecular Biology of …, 2024 - Am Soc Cell Biol
Fatty acids stored in triacylglycerol-rich lipid droplets are assembled with a surface
monolayer composed primarily of phosphatidylcholine (PC). Fatty acids stimulate PC …

Arabidopsis CTP: phosphocholine cytidylyltransferase 1 is phosphorylated and inhibited by sucrose nonfermenting 1–related protein kinase 1 (SnRK1)

KMP Caldo, Y Xu, L Falarz, K Jayawardhane… - Journal of Biological …, 2019 - ASBMB
De novo phosphatidylcholine (PC) biosynthesis via the Kennedy pathway involves highly
endergonic biochemical reactions that must be fine-tuned with energy homeostasis …

Differential dephosphorylation of CTP: phosphocholine cytidylyltransferase upon translocation to nuclear membranes and lipid droplets

L Yue, MJ McPhee, K Gonzalez… - Molecular Biology of …, 2020 - Am Soc Cell Biol
CTP: phosphocholine cytidylyltransferase-alpha (CCTα) and CCTβ catalyze the rate-limiting
step in phosphatidylcholine (PC) biosynthesis. CCTα is activated by association of its α …

Disease-linked mutations in the phosphatidylcholine regulatory enzyme CCTα impair enzymatic activity and fold stability

RB Cornell, SG Taneva, MK Dennis, R Tse… - Journal of Biological …, 2019 - ASBMB
CTP phosphocholine cytidylyltransferase (CCT) is the key regulatory enzyme in
phosphatidylcholine (PC) synthesis and is activated by binding to PC-deficient membranes …

Structural determinants of the catalytic mechanism of Plasmodium CCT, a key enzyme of malaria lipid biosynthesis

E Guca, GN Nagy, F Hajdú, L Marton, R Izrael, F Hoh… - Scientific Reports, 2018 - nature.com
The development of the malaria parasite, Plasmodium falciparum, in the human erythrocyte,
relies on phospholipid metabolism to fulfil the massive need for membrane biogenesis …

Remodeling of the interdomain allosteric linker upon membrane binding of CCTα pulls its active site close to the membrane surface

DG Knowles, J Lee, SG Taneva, RB Cornell - Journal of Biological …, 2019 - ASBMB
The rate-limiting step in the biosynthesis of the major membrane phospholipid,
phosphatidylcholine, is catalyzed by CTP: phosphocholine cytidylyltransferase (CCT), which …