PBS with 0.02% sodium azide and 50% glycerol pH 7.3,-20℃ for 12 months(Avoid repeated freeze / thaw cycles.)
Background
HEK1 (Checkpoint kinase-1) is also named as CHK1 and belongs to the protein kinase superfamily. It is implicated in a circuit in which it activates checkpoints, DNA repair and proliferating cell nuclear antigen and FANCD2 monoubiquitinylation (PMID:21389083) . CHEK1 protects vertebrate cells against spontaneous chromosome missegregation and is required to sustain anaphase delay when spindle function is disrupted by taxol (PMID:17276342) . It has 3 isoforms produced by alternative splicing with the molecular mass of 54 kDa, 44 kDa and 50 kDa.