کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1935792 | 1050675 | 2008 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Ciz, a transcription factor with a nucleocytoplasmic shuttling activity, interacts with C-propeptides of type I collagen Ciz, a transcription factor with a nucleocytoplasmic shuttling activity, interacts with C-propeptides of type I collagen](/preview/png/1935792.png)
Ciz is a zinc finger transcription factor with nucleocytoplasmic shuttling activity. Ciz-deficient mice show high bone mass phenotype. As a first step to address how Ciz suppresses bone formation, we examined the binding partners of Ciz based on a yeast two-hybrid screening. While Ciz is an intracellular protein, 47% of the positive clones were genes encoding extracellular matrix proteins, including Col1a1, Col1a2, Fbln2, and Rpsa. In vitro coimmunoprecipitation experiments using in vitro translated proteins revealed direct binding of Ciz-ΔZF (zinc finger) to C-propeptides of Col1a1 and Col1a2. In vivo association of the transfected Ciz and C-propeptide of Col1a1 was observed in COS-7 cells based on immunoprecipitation. In terms of intracellular localization, overexpressed C-propeptides of Col1 and Ciz were co-localized in nuclei. These results revealed that Ciz interacts with C-propeptides of type I collagen and this association takes place in nuclei.
Journal: Biochemical and Biophysical Research Communications - Volume 368, Issue 2, 4 April 2008, Pages 205–210