Extemporaneously prepared, alcohol-free, 1-mg/mL suspensions of melatonin and melatonin-pyridoxine hydrochloride in a 1:1 mixture of Ora-Plus and either Ora Sweet or Ora Sweet SF were stable for at least 90 days when stored in 2-oz amber plastic bottles at room temperature.
The heterodecameric Dam1 complex is involved in establishing and maintaining the connection between the kinetochore and the mitotic spindle during mitosis. Biochemical studies of the reconstituted complex have shed light upon how it interacts with microtubules. However, little information about the biochemical properties of the isolated subunits has been available. This report examines the stability and structure of Dad2p, one of the Dam1 complex subunits isolated from Candida albicans. By employing differential scanning fluorimetry, protease protection and hydrodynamic analyses, we show that Dad2p is specifically responsive to the presence of divalent cations. This observation may be important for understanding the dynamic structure and regulation of the Dam1 complex in fungal cells.
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