Casein kinase 2 (CK2) is a protein kinase that phosphorylates a plethora of cellular target proteins involved in processes including DNA repair, cell cycle control, and circadian timekeeping. CK2 is functionally conserved across eukaryotes, although the substrate proteins identified in a range of complex tissues are often different. The marine alga Ostreococcus tauri is a unicellular eukaryotic...

The two stars that form the subject of this paper are both short-period double-lined eclipsing binaries. They have non-circular orbits despite their short periods, both of which are very close to integral numbers of sidereal days (10.0015 and 9.0127 sidereal days respectively), making it difficult to achieve uniform phase coverage of the orbits from a single site in the short term. Although the...