About STK4
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. [provided by RefSeq, Jul 2008]

About DyLight 633
DyLight™ 633 is a red-emitting fluroescent dye that can be excited by the 628 nm laser and collected using a 670/30 nm bandpass filter. DyLight™ 633 has an excitation peak of 638 nm and an emission peak of 658 nm, and is spectrally similar to Alexa Fluor™ 633. DyLight™ 633 is most commonly used in flow cytometery and fluorescence microscopy applications.