نتایج جستجو برای: apobec3g

تعداد نتایج: 713  

ژورنال: فیض 2009

سابقه و هدف: مولکول APOBEC3G ، به عنوان فاکتور سلولی دخیل در میانکنش با vif HIV-1 عمل می­کند که برای بررسی میانکنش آن با vif HIV-1 ، از سلول­های ناپذیرای طبیعی و ذاتی مثل H9 و PBMC انسانی مولد APOBEC3G استفاده می­شود. به دلیل ناکارآمدی آنها در این نوع بررسی­ها، نیازمند سلول­های ناپذیرایی بودیم که به طور ثابت و به میزان بالا تولید APOBEC3G بنماید. لذا از سلول­های 293T برای ایجاد این دسته از سلول...

Journal: :The Journal of biological chemistry 2007
Xiaojun Wang Patrick T Dolan Ying Dang Yong-Hui Zheng

APOBEC3G and APOBEC3F are cytidine deaminase with duplicative cytidine deaminase motifs that restrict HIV-1 replication by catalyzing C-to-U transitions on nascent viral cDNA. Despite 60% protein sequence similarity, APOBEC3F and APOBEC3G have a different target consensus sequence for editing, and importantly, APOBEC3G has 10-fold higher anti-HIV activity than APOBEC3F. Thus, APOBEC3F and APOBE...

ژورنال: :فیض 0
احمد پیروزمند ahmad ‍piroozmand department of microbiology, kashan university of medical sciences, kashan, iranکاشان، کیلومتر 5 بلوار قطب راوندی، دانشکده پزشکی، گروه میکروبیولوژی و ویرولوژی

سابقه و هدف: مولکول apobec3g ، به عنوان فاکتور سلولی دخیل در میانکنش با vif hiv-1 عمل می­کند که برای بررسی میانکنش آن با vif hiv-1 ، از سلول­های ناپذیرای طبیعی و ذاتی مثل h9 و pbmc انسانی مولد apobec3g استفاده می­شود. به دلیل ناکارآمدی آنها در این نوع بررسی­ها، نیازمند سلول­های ناپذیرایی بودیم که به طور ثابت و به میزان بالا تولید apobec3g بنماید. لذا از سلول­های 293t برای ایجاد این دسته از سلول...

Journal: :Journal of virology 2010
Qiujia Shao Yudi Wang James E K Hildreth Bindong Liu

Proteasomal degradation of APOBEC3G is a critical step for human immunodeficiency virus type 1 (HIV-1) replication. However, the necessity for polyubiquitination of APOBEC3G in this process is still controversial. In this study, we showed that although macaque simian immunodeficiency virus (SIVmac) Vif is more stable than HIV-1 Vif in human cells, SIVmac Vif induces degradation of APBOEC3G as e...

2017
Ruidong Chen Xue Zhao Yongxiang Wang Youhua Xie Jing Liu

The apolipoprotein B mRNA editing catalytic polypeptide-like (APOBEC) family proteins bind RNA and single-stranded DNA, and create C-to-U base modifications through cytidine deaminase activity. APOBEC3G restricts human immunodeficiency virus 1 (HIV-1) infection by creating hypermutations in proviral DNA, while HIV-1-encoded vif protein antagonizes such restriction by targeting APOBEC3G for degr...

Journal: :Blood 2012
Roni Nowarski Ofer I Wilner Ori Cheshin Or D Shahar Edan Kenig Leah Baraz Elena Britan-Rosich Arnon Nagler Reuben S Harris Michal Goldberg Itamar Willner Moshe Kotler

APOBEC3 proteins catalyze deamination of cytidines in single-stranded DNA (ssDNA), providing innate protection against retroviral replication by inducing deleterious dC > dU hypermutation of replication intermediates. APOBEC3G expression is induced in mitogen-activated lymphocytes; however, no physiologic role related to lymphoid cell proliferation has yet to be determined. Moreover, whether AP...

2013
Madison B. Adolph Jonathon Webb Linda Chelico

It is well established that the cytosine deaminase APOBEC3G can restrict HIV-1 virions in the absence of the virion infectivity factor (Vif) by inducing genome mutagenesis through deamination of cytosine to uracil in single-stranded HIV-1 (-)DNA. However, whether APOBEC3G is able to restrict HIV-1 using a deamination-independent mode remains an open question. In this report we use in vitro prim...

2013
Iraj Hosseini Feilim Mac Gabhann

The interplay between the innate immune system restriction factor APOBEC3G and the HIV protein Vif is a key host-retrovirus interaction. APOBEC3G can counteract HIV infection in at least two ways: by inducing lethal mutations on the viral cDNA; and by blocking steps in reverse transcription and viral integration into the host genome. HIV-Vif blocks these antiviral functions of APOBEC3G by imped...

2016
Shraddha Sharma Santosh K. Patnaik Robert T. Taggart Bora E. Baysal

APOBEC3G is a cytidine deaminase with two homologous domains and restricts retroelements and HIV-1. APOBEC3G deaminates single-stranded DNAs via its C-terminal domain, whereas the N-terminal domain is considered non-catalytic. Although APOBEC3G is known to bind RNAs, APOBEC3G-mediated RNA editing has not been observed. We recently discovered RNA editing by the single-domain enzyme APOBEC3A in i...

Journal: :PLoS ONE 2007
Kun-Lin Zhang Bastien Mangeat Millan Ortiz Vincent Zoete Didier Trono Amalio Telenti Olivier Michielin

BACKGROUND APOBEC3G (apolipoprotein B mRNA-editing enzyme, catalytic polypeptide-like 3G) has antiretroviral activity associated with the hypermutation of viral DNA through cytosine deamination. APOBEC3G has two cytosine deaminase (CDA) domains; the catalytically inactive amino-terminal domain of APOBEC3G (N-CDA) carries the Vif interaction domain. There is no 3-D structure of APOBEC3G solved b...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید