scholarly journals Direct Protein Delivery to Mammalian Cells Using Cell-permeable Cys2-His2 Zinc-finger Domains

10.3791/52814 ◽  
2015 ◽  
Author(s):  
Thomas Gaj ◽  
Jia Liu
Keyword(s):  
Zinc Finger ◽  
Protein Delivery ◽  
Mammalian Cells ◽  
Zinc Finger Domains

scholarly journals Protein Delivery Using Cys2–His2 Zinc-Finger Domains

2014 ◽  
Vol 9 (8) ◽  
pp. 1662-1667 ◽  
Author(s):  
Thomas Gaj ◽  
Jia Liu ◽  
Kimberly E. Anderson ◽  
Shannon J. Sirk ◽  
Carlos F. Barbas
Keyword(s):  
Zinc Finger ◽  
Protein Delivery ◽  
Zinc Finger Domains

scholarly journals Determination of DNA binding specificities of mutated zinc finger domains

FEBS Letters ◽  
1991 ◽  
Vol 283 (1) ◽  
pp. 23-26 ◽  
Author(s):  
Hans-Jürgen Thiesen ◽  
Christian Bach
Keyword(s):  
Dna Binding ◽  
Zinc Finger ◽  
Zinc Finger Domains

scholarly journals Methods for protein delivery into cells: from current approaches to future perspectives

2020 ◽  
Vol 48 (2) ◽  
pp. 357-365
Author(s):  
Chalmers Chau ◽  
Paolo Actis ◽  
Eric Hewitt
Keyword(s):  
Single Molecule ◽  
Cell Biology ◽  
Protein Delivery ◽  
Mammalian Cells ◽  
Cultured Cells ◽  
Cellular Damage ◽  
Future Perspectives ◽  
Chemically Modified ◽  
Recent Developments ◽  
Direct Delivery

The manipulation of cultured mammalian cells by the delivery of exogenous macromolecules is one of the cornerstones of experimental cell biology. Although the transfection of cells with DNA expressions constructs that encode proteins is routine and simple to perform, the direct delivery of proteins into cells has many advantages. For example, proteins can be chemically modified, assembled into defined complexes and subject to biophysical analyses prior to their delivery into cells. Here, we review new approaches to the injection and electroporation of proteins into cultured cells. In particular, we focus on how recent developments in nanoscale injection probes and localized electroporation devices enable proteins to be delivered whilst minimizing cellular damage. Moreover, we discuss how nanopore sensing may ultimately enable the quantification of protein delivery at single-molecule resolution.

scholarly journals Biochemical Activities of Highly Purified, Catalytically Active Human APOBEC3G: Correlation with Antiviral Effect

2006 ◽  
Vol 80 (12) ◽  
pp. 5992-6002 ◽  
Author(s):  
Yasumasa Iwatani ◽  
Hiroaki Takeuchi ◽  
Klaus Strebel ◽  
Judith G. Levin
Keyword(s):  
Zinc Finger ◽  
Cytidine Deaminase ◽  
Antiviral Effect ◽  
Minimum Length ◽  
Nucleic Acid Binding ◽  
Mobility Shift ◽  
Pure System ◽  
Dna And Rna ◽  
Catalytically Active ◽  
Zinc Finger Domains

ABSTRACT APOBEC3G (APO3G), a cytidine deaminase with two zinc finger domains, inhibits human immunodeficiency virus type 1 replication in the absence of Vif. Here, we provide a comprehensive molecular analysis of the deaminase and nucleic acid binding activities of human APO3G using a pure system containing only one protein component, i.e., highly purified, catalytically active enzyme expressed in a baculovirus system. We demonstrate that APO3G deaminates cytosines in single-stranded DNA (ssDNA) only, whereas it binds efficiently to ssDNA and ssRNA, about half as well to a DNA/RNA hybrid, and poorly to double-stranded DNA and RNA. In addition, the base specificities for deamination and binding of ssDNA are not correlated. The minimum length required for detection of APO3G binding to an ssDNA oligonucleotide in an electrophoretic mobility shift assay is 16 nucleotides. Interestingly, if nucleocapsid protein and APO3G are present in the same reaction, we find that they do not interfere with each other's binding to RNA and a complex containing the RNA and both proteins is formed. Finally, we also identify the functional activities of each zinc finger domain. Thus, although both zinc finger domains have the ability to bind nucleic acids, the first zinc finger contributes more to binding and APO3G encapsidation into virions than finger two. In contrast, deamination is associated exclusively with the second zinc finger. Moreover, zinc finger two is more important than finger one for the antiviral effect, demonstrating a correlation between deaminase and antiviral activities.

scholarly journals Targeting Ligandable Pockets on Plant Homeodomain (PHD) Zinc Finger Domains by a Fragment-Based Approach

2018 ◽  
Vol 13 (4) ◽  
pp. 915-921 ◽  
Author(s):  
Anastasia Amato ◽  
Xavier Lucas ◽  
Alessio Bortoluzzi ◽  
David Wright ◽  
Alessio Ciulli
Keyword(s):  
Zinc Finger ◽  
Plant Homeodomain ◽  
Zinc Finger Domains

Structural Analyses of Zinc Finger Domains for Specific Interactions with DNA

2016 ◽  
Vol 26 (12) ◽  
pp. 2019-2029 ◽  
Author(s):  
Ki Seong Eom ◽  
Jin Sung Cheong ◽  
Seung Jae Lee
Keyword(s):  
Zinc Finger ◽  
Specific Interactions ◽  
Zinc Finger Domains
Sign in / Sign up

Export Citation Format

Share Document