Anti-MST1/STK4 Antibody Picoband® Fluoro647 Conjugated

Serine/threonine-protein kinase 4 is an enzyme that in humans is encoded by the STK4 gene. The protein encoded by this gene is a cytoplasmic kinase that is structurally similar to the yeast Ste20p kinase, which acts upstream of the stress-induced mitogen-activated protein kinase cascade. The encoded protein can phosphorylate myelin basic protein and undergoes autophosphorylation. A caspase-cleaved fragment of the encoded protein has been shown to be capable of phosphorylating histone H2B. The particular phosphorylation catalyzed by this protein has been correlated with apoptosis, and it's possible that this protein induces the chromatin condensation observed in this process.

1. Abdollahpour, H., Appaswamy, G., Kotlarz, D., Diestelhorst, J., Beier, R., Schaffer, A. A., Gertz, E. M., Schambach, A., Kreipe, H. H., Pfeifer, D., Engelhardt, K. R., Rezaei, N., Grimbacher, B., Lohrmann, S., Sherkat, R., Klein, C. The phenotype of human STK4 deficiency. Blood 119: 3450-3457, 2012. 2. Cheung, W. L., Ajiro, K., Samejima, K., Kloc, M., Cheung, P., Mizzen, C. A., Beeser, A., Etkin, L. D., Chernoff, J., Earnshaw, W. C., Allis, C. D. Apoptotic phosphorylation of histone H2B is mediated by mammalian sterile twenty kinase. Cell 113: 507-517, 2003. 3. Creasy, C. L., Chernoff, J. Cloning and characterization of a human protein kinase with homology to Ste20. J. Biol. Chem. 270: 21695-21700, 1995.