Redundant targeting of Isr1 by two CDKs in mitotic cells.
Redundant targeting of Isr1 by two CDKs in mitotic cells.
复制标题
有丝分裂细胞中两种CDK对Isr1的冗余靶向作用。
DOI:
10.1007/s00294-020-01110-x
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发表时间:
2021-03
期刊:
影响因子:
2.5
通讯作者:
Toczyski DP
中科院分区:
文献类型:
--
作者:
Alme EB;Toczyski DP
Protein phosphorylation is an essential regulatory mechanism that controls most cellular processes, integrating a variety of environmental signals to drive cellular growth. Isr1 is a negative regulator of the hexosamine biosynthesis pathway (HBP), which produces UDP-GlcNAc, an essential carbohydrate that is the building block of N-glycosylation, GPI anchors and chitin. Isr1 was recently shown to be regulated by phosphorylation by the nutrient-responsive CDK kinase Pho85, allowing it to be targeted for degradation by the SCFCDC4. Here, we show that while deletion of PHO85 stabilizes Isr1 in asynchronous cells, Isr1 is still unstable in mitotically arrested cells in a pho85Δ strain. We provide evidence to suggest that this is through phosphorylation by CDK1. Redundant targeting of Isr1 by two distinct kinases may allow for tight regulation of the HBP in response to different cellular signals.
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影响因子:
21.3
作者:
Benanti, Jennifer A.;Cheung, Stephanie K.;Toczyski, David P.
通讯作者:
Toczyski, David P.
影响因子:
64.5
作者:
Skowyra, D;Craig, KL;Harper, JW
通讯作者:
Harper, JW
影响因子:
16
作者:
Hao, Bing;Oehlmann, Stephanie;Pavletich, Nikola P.
通讯作者:
Pavletich, Nikola P.
影响因子:
3.3
作者:
Spellman, PT;Sherlock, G;Futcher, B
通讯作者:
Futcher, B
DOI:
10.1073/pnas.76.2.645
发表时间:
1979-01-01
影响因子:
11.1
作者:
SCHEKMAN, R;BRAWLEY, V
通讯作者:
BRAWLEY, V