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A zinc finger is a small protein structural motif that is characterized by the coordination of one or more zinc ions (Zn 2+) which stabilizes the fold. The term zinc finger was originally coined to describe the finger-like appearance of a hypothesized structure from the African clawed frog (Xenopus laevis) transcription factor IIIA.
This gene on the X chromosome is structurally similar to a related gene on the Y chromosome ().It encodes a member of the krüppel C2H2-type zinc-finger protein family. The full-length protein contains an acidic transcriptional activation domain (AD), a nuclear localization sequence (NLS) and a DNA binding domain (DBD) consisting of 13 C2H2-type zinc fingers.
In molecular biology, a RING (short for Really Interesting New Gene) finger domain is a protein structural domain of zinc finger type which contains a C 3 HC 4 amino acid motif which binds two zinc cations (seven cysteines and one histidine arranged non-consecutively).
The Cys2His2 zinc finger repeats function as a binding mechanism for a zinc, or other metal ion. [14] The structure of this motif is two ligands from a knuckle and two more from the c-terminus of a helix. It is thought that these domains are crucial to the regulation of transcription for both DNA and RNA. [15] The ZFP62 protein contains 26 of ...
Zinc finger Y-chromosomal protein is a protein that in humans is encoded by the ZFY gene of the Y chromosome. [3] [4] This gene encodes a zinc finger-containing protein that may function as a transcription factor. This gene was once a candidate gene for the testis-determining factor (TDF) and was erroneously referred to as TDF. [4]
The first zinc cluster is strictly conserved, whereas the second zinc cluster displays variability in the position of the two His residues. In Arabidopsis thaliana (Mouse-ear cress), the hypersensitive to red and blue 1 (Hrb1) protein, which regulating both red and blue light responses, contains a ZZ-type zinc finger domain. [3] ZZ-type zinc ...
Zinc finger transcription factors or ZF-TFs, are transcription factors composed of a zinc finger-binding domain and any of a variety of transcription-factor effector-domains that exert their modulatory effect in the vicinity of any sequence to which the protein domain binds. [1] Zinc finger protein transcription factors can be encoded by genes ...
In molecular biology, GATA zinc fingers are zinc-containing domains found in a number of transcription factors (including erythroid-specific transcription factor and nitrogen regulatory proteins). Some members of this class of zinc fingers specifically bind the DNA sequence (A/T)GATA(A/G) in the regulatory regions of genes., [1] giving rise to ...