F-box protein Skp2: a novel transcriptional target of E2F
نویسندگان
چکیده
منابع مشابه
Role of the F-box protein Skp2 in lymphomagenesis.
The F-box protein Skp2 (S-phase kinase-associated protein 2) positively regulates the G(1)-S transition by controlling the stability of several G(1) regulators, such as the cell cycle inhibitor p27. We show here that Skp2 expression correlates directly with grade of malignancy and inversely with p27 levels in human lymphomas. To directly evaluate the potential of Skp2 to deregulate growth in vi...
متن کاملRepression of the F-box protein Skp2 is essential for actin damage-induced tetraploid G1 arrest
We previously reported that p53 plays a role as a key regulator in the tetraploid G1 checkpoint, which is activated by actin damage-induced cytokinesis blockade and then prevents uncoupled DNA replication and nuclear division without cytokinesis. In this study, we investigated a role of Skp2, which targets CDK2 inhibitor p27/Kip1, in actin damage-induced tetraploid G1 arrest. Expression of Skp2...
متن کاملRole of the F-Box Protein Skp2 in Adhesion-Dependent Cell Cycle Progression
Cell adhesion to the extracellular matrix (ECM) is a requirement for proliferation that is typically lost in malignant cells. In the absence of adhesion, nontransformed cells arrest in G1 with increased levels of the cyclin-dependent kinase inhibitor p27. We have reported previously that the degradation of p27 requires its phosphorylation on Thr-187 and is mediated by Skp2, an F-box protein tha...
متن کاملF-box protein substrate recognition
Ubiquitin E3 ligases represent an increasingly diverse group of proteins whose precise biologic role still remains enigmatic. Of the SCF (Skp1-Cullin1-F-box) E3 ligase family, for example, only very few subunits from over 60 family members are well-characterized. The SCF apparatus contains a multi-subunit catalytic core consisting of Skp1, Cullin1 and the E2 ubiquitin-conjugating (Ubc) enzyme a...
متن کاملAn Arabidopsis F-box protein acts as a transcriptional co-factor to regulate floral development.
Plants flower in response to both environmental and endogenous signals. The Arabidopsis LEAFY (LFY) transcription factor is crucial in integrating these signals, and acts in part by activating the expression of multiple floral homeotic genes. LFY-dependent activation of the homeotic APETALA3 (AP3) gene requires the activity of UNUSUAL FLORAL ORGANS (UFO), an F-box component of an SCF ubiquitin ...
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ژورنال
عنوان ژورنال: Oncogene
سال: 2005
ISSN: 0950-9232,1476-5594
DOI: 10.1038/sj.onc.1209286