Protein Name:
Myotonin-protein kinase
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UniprotKB/SwissProt ID: Q09013 (Q09013)
Gene Name:
DMPK
Organism: Homo sapiens (Human)
Function: Non-receptor serine/threonine protein kinase which is necessary for the maintenance of skeletal muscle structure and function. May play a role in myocyte differentiation and survival by regulating the integrity of the nuclear envelope and the expression of muscle-specific genes. May also phosphorylate PPP1R12A and inhibit the myosin phosphatase activity to regulate myosin phosphorylation. Also critical to the modulation of cardiac contractility and to the maintenance of proper cardiac conduction activity probably through the regulation of cellular calcium homeostasis. Phosphorylates PLN, a regulator of calcium pumps and may regulate sarcoplasmic reticulum calcium uptake in myocytes. May also phosphorylate FXYD1/PLM which is able to induce chloride currents. May also play a role in synaptic plasticity
Other Modifications: View all modification sites in dbPTM
Protein Subcellular Localization: Endoplasmic reticulum membrane. Nucleus outer membrane. Mitochondrion outer membrane. Sarcoplasmic reticulum membrane. Cell membrane. Cytoplasm, cytosol. Mitochondrion membrane. Mitochondrion membrane
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Graphical Visualization of S-nitrosylation Sites:
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