CRL4-DDB1-VPRBP ubiquitin ligase mediates the stress triggered proteolysis of Mcm10.
CRL4-DDB1-VPRBP ubiquitin ligase mediates the stress triggered proteolysis of Mcm10.
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DOI:
10.1093/nar/gks366
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发表时间:
2012-08
影响因子:
14.9
通讯作者:
Saxena S
中科院分区:
文献类型:
--
作者:
Kaur M;Khan MM;Kar A;Sharma A;Saxena S
When mammalian cells experience radiation insult, DNA replication is stalled to prevent erroneous DNA synthesis. UV-irradiation triggers proteolysis of Mcm10, an essential human replication factor, inhibiting the ongoing replication. Here, we report that Mcm10 associates with E3 ubiquitin ligase comprising DNA damage-binding protein, DDB1, cullin, Cul4 and ring finger protein, Roc1. Depletion of DDB1, Roc1 or Cul4 abrogates the UV-triggered Mcm10 proteolysis, implying that Cul4–Roc1–DDB1 ubiquitin ligase mediates Mcm10 downregulation. The purified Cul4–Roc1–DDB1 complex ubiquitinates Mcm10 in vitro, proving that Mcm10 is its substrate. By screening the known DDB1 interacting proteins, we discovered that VprBP is the substrate recognition subunit that targets Mcm10 for degradation. Hence, these results establish that Cul4–DDB1–VprBP ubiquitin ligase mediates the stress-induced proteolysis of replication factor, Mcm10.
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影响因子:
8
作者:
Huang, J.;Chen, J.
通讯作者:
Chen, J.
影响因子:
--
作者:
Kaur M;Sharma A;Khan M;Kar A;Saxena S
通讯作者:
Saxena S
DOI:
10.1073/pnas.0511160103
发表时间:
2006-02-21
影响因子:
11.1
作者:
Kapetanaki, MG;Guerrero-Santoro, J;Levine, AS
通讯作者:
Levine, AS
影响因子:
4.3
作者:
Le Rouzic, Erwann;Belaidouni, Nadia;Margottin-Goguet, Florence
通讯作者:
Margottin-Goguet, Florence
影响因子:
10.5
作者:
Abbas, Tarek;Sivaprasad, Uma;Dutta, Anindya
通讯作者:
Dutta, Anindya