Measurement of Phospholipase D Activation in Vascular Smooth Muscle Cells
Bibliographic record
Abstract
Phospholipase D (PLD), which hydrolyzes phospholipids (primarily phos-phatidylcholine) to generate phosphatidic acid, is an essential component in cellular signal transduction (1,2). Phosphatidic acid and its dephosphorylated product 1,2 diacylglycerol, are important intracellular second messengers that play critical roles in various cell types including vascular smooth muscle cells (3,4). The human PLD gene 1 has been cloned and expressed. The expressed mammalian PLD has a molecular weight of approx 120 and has both catalytic and transphosphatidylation activities with phosphatidyl cho-line as substrate (5). PLD activation can be initiated by various agonists that fall into two main categories: (1) agents that signal through tyrosine kinase-dependent pathways, e.g., growth factors, and (2) agents that signal through seven transmembrane receptors, acting through trimeric membrane G proteins, e.g., angiotensin II and endothelin-1 (6-9). The molecular mechanisms by which Ang II receptors couple to PLD have recently been identified. The Gβγ subunits as well as their associated Gα(12) subunits, mediate Ang II-induced PLD activation via Src-dependent mechanisms in vascular smooth muscle cells. Small molecular-weight G protein RhoA is also involved in these signaling cascades (10).
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".