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Protein kinase D1 (PKD1)
- Target
- PKD1
- Molecular classification
- Enzyme, Serine/threonine kinase, Protein kinase D family, Calcium/calmodulin-dependent protein kinase (CaMK) branch
01
Overview
Protein kinase D1 is a stress-activated serine/threonine kinase that functions as an intracellular signaling node, integrating signals from PKC activation and diacylglycerol accumulation. It has a modular structure with N-terminal regulatory domains (including C1A/C1B and PH domains) and a C-terminal kinase domain. PKD1 localizes to the cytosol, nucleus, membranes, Golgi, and mitochondria, executing pivotal roles in signal transduction, regulation of cell proliferation, apoptosis, differentiation, immune modulation, membrane trafficking, and migration. Its activity is essential for normal development, and dysregulation is implicated in cancer progression, metastasis, and other pathologies.
- Other names
- PKD1PRKD1PKC-muserine/threonine-protein kinase D1PKCM
02
Mechanism of action
Inhibition of PKD1 kinase activity by blocking phosphorylation Modulation of downstream signaling cascades controlling cell growth, survival, and migration
03
Biological functions
Signal transductionCell proliferationApoptosisImmune regulationCellular differentiationCardiac contraction and hypertrophyAngiogenesisMembrane traffickingCell migrationCell survival
04
Disease associations
Cancer (notably prostate, breast, and colon cancer)Cardiovascular disease (cardiac hypertrophy and contraction)InflammationOther (early embryonic lethality in PKD1 knockout models)
05
Safety considerations
Possible off-target effects due to close homology with PKD2/PKD3, especially in inhibitor developmentEssential role in embryogenesis (inhibition could lead to developmental toxicity)
06
Interacting drugs
Drugs targeting PKD1 are under research; specific named drugs are not routinely listed in public clinical sources. Some small-molecule inhibitors of the PKD family have been described in the literature but not individually cited here.
07
Biomarkers
PKD1 expression levels (prognostic biomarker for cancer progression and metastasis)Phosphorylation status of PKD1
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