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CKAP2 phosphorylation by CDK1/cyclinB1 is crucial for maintaining centrosome integrity
유범호,강두석,박치후,강경진,배창대 생화학분자생물학회 2017 Experimental and molecular medicine Vol.49 No.-
Previously, we have reported that CKAP2 is involved in the maintenance of centrosome integrity, thus allowing for proper mitosis in primary hepatocytes. To understand this biological process, we identified the mitosis-specific phosphorylation sites in mouse CKAP2 and investigated CKAP’s possible role in cell cycle progression. Because we observed mouse CKAP2 depletion in amplified centrosomes and aberrant chromosomal segregation, which was rescued by ectopic expression of wild-type CKAP2, we focused on the centrosome duplication process among the various aspects of the cell cycle. Among the identified phosphorylation sites, T603 and possibly S608 were phosphorylated by CDK1–cyclin B1 during mitosis, and the ectopic expression of both T603A and S608A mutants was unable to restore the centrosomal abnormalities in CKAP2-depleted cells. These results indicated that the phosphorylation status of CKAP2 during mitosis is critical for controlling both centrosome biogenesis and bipolar spindle formation.
암무니아가 염소소독력 및 소독부산물 생산에 미치는 영향
신호상(Ho Sang Shin),박치후(Chi Hu Park) 한국물환경학회 1999 한국물환경학회지 Vol.15 No.4
The bactericidal effects and by-products of chlorine by ammonia were studied. The bactericidal efficiency was perfect only after chlorine was added until the breakpoint. The concentration of residual chlorine increased from initial time to addition of chlorine 6㎎/L and decreased to addition of chlorine 11㎎/L, and then again increased after the breakpoints. Ammonia existence in raw water could reduce amount of the by-products of chlorine such as THMs, halo acetic acids, chloral hydrate and chloroacetonitrile but the concentration of nitrate was increased. At the condition bactericidal efficiency was slightly decreased.