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Updated: Dec 21, 2025

Direct Protein Delivery to Mammalian Cells Using Cell-permeable Cys2-His2 Zinc-finger Domains
Published on: March 25, 2015
[Zn-CysHis Protein Factor Families: Role of Electrostatic Interaction of Zn-Domains in Factor Functions]
Y N Chirgadze1,2, V V Ivanov3,4
1Institute of Protein Research, Russian Academy of Sciences, Pushchino, Moscow oblast, 142290 Russia.
Abstract:
The large amount of the DNA- and RNA-binding protein regulatory factors contain Zn-domains. Total six Zn-CysHis factor families with different functions were considered. Among them the transcription factors of family PF00096, complex type Zn-Cys2His2, is the most important because it includes over 340.000 members of 365.000 total members listed at present in the Zn-containing factor families. The role of electrostatic potential of Zn-domains in the structure and function of factors from different factor families has been considered. We have shown that the positive electrostatic potential of Zn-domains plays an essential role in forming contact of factors' Zn-domains with DNA/RNA in three protein factor families PF00096, PF12874, and PF09329. While in other three families PF03119, PF08996, and PF01258 Zn-domains do not contact with nucleic acids, and electrostatic interactions do not play a distinctive role, consequently.
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