ZNF184 | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Aliases | ZNF184 , kr-ZNF3, zinc finger protein 184 | ||||||||||||||||||||||||||||||||||||||||||||||||||
External IDs | OMIM: 602277 MGI: 1922244 HomoloGene: 113602 GeneCards: ZNF184 | ||||||||||||||||||||||||||||||||||||||||||||||||||
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Wikidata | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Zinc finger protein 184, also known as ZNF184, is a protein that in humans is encoded by the ZNF184 gene [5] on chromosome 6. It was first identified by Goldwurm et al. in 1996. [6]
The National Center for Biotechnology Information (NCBI) Gene database entry [5] for ZNF184 identifies conserved domains KRAB_A (Krüppel associated box) near the N-terminus and Zn-finger (Zinc finger) at the C-terminus of the translated protein. The former is associated with transcription repression [7] and the latter with DNA binding (see Zinc finger).
The figure below is a reformatted and annotated conceptual translation display of ZNF184's Consensus CDS. [8] CCDS displays exons in alternating black and blue font, with red indicating a residue coded across a splice boundary.
ZNF184 has 19 zinc finger motifs at the end of its final and longest exon. The figure shows regularity among the fingers in this protein, including the 2 columns of green-highlighted Cysteine residues and the 2 columns of blue-highlighted His residues which are the reason this type of zinc finger is called C2H2. Light grey highlighted columns (one with all F; one with mostly L, and F substitutions) are highly conserved hydrophobic residues within the zinc finger motif. The other light grey highlighted column (mostly K, with a similar R substitution) is an example of fairly strong conservation in the coil sections connecting adjacent fingers.
Near the N-terminus is a KRAB_A domain followed by a KRAB_B domain. KRAB_A has a shorter α-Helix followed by a longer α-Helix. The KRAB_A motif in a zinc finger protein is known to bind with a KAP-1 protein (aka TRIM28) to accomplish a transcription repressor function, however a gene so regulated by ZNF184 has yet to be identified. The length-11 finger helices are indicated, as well as the overlapping 7-residue section in each finger which binds targeted DNA (if the finger is functioning).
The Krüppel associated box (KRAB) domain is a category of transcriptional repression domains present in approximately 400 human zinc finger protein-based transcription factors. The KRAB domain typically consists of about 75 amino acid residues, while the minimal repression module is approximately 45 amino acid residues. It is predicted to function through protein-protein interactions via two amphipathic helices. The most prominent interacting protein is called TRIM28 initially visualized as SMP1, cloned as KAP1 and TIF1-beta. Substitutions for the conserved residues abolish repression.
Zinc finger protein 281 is a protein that in humans is encoded by the ZNF281 gene.
Zinc finger protein OZF is a protein that in humans is encoded by the ZNF146 gene.
Zinc finger protein 43 is a protein that in humans is encoded by the ZNF43 gene.
Zinc finger protein 10 is a protein that in humans is encoded by the ZNF10 gene.
Zinc finger protein 274 is a protein that in humans is encoded by the ZNF274 gene.
Zinc finger protein 649 is a protein that in humans is encoded by the ZNF649 gene on Human Chromozone 19 containing 5 exons.
Zinc finger protein with KRAB and SCAN domains 1 is a protein that in humans is encoded by the ZKSCAN1 gene.
Zinc finger protein 267 is a protein that in humans is encoded by the ZNF267 gene.
Zinc finger protein 19 is a protein that in humans is encoded by the ZNF19 gene.
Zinc finger protein 41 is a protein that in humans is encoded by the ZNF41 gene.
Zinc finger protein 268 is a protein that in humans is encoded by the ZNF268 gene.
Zinc finger protein 331 is a protein that in humans is encoded by the ZNF331 gene.
Zinc finger protein 83 is a protein that in humans is encoded by the ZNF83 gene.
Zinc finger protein 8 is a protein that in humans is encoded by the ZNF8 gene.
Zinc finger protein 23 is a protein that in humans is encoded by the ZNF23 gene.
Zinc finger protein 133 is a protein that in humans is encoded by the ZNF133 gene.
Zinc finger protein 160 is a protein that, in humans, is encoded by the ZNF160 gene.
Zinc finger protein 208 is a protein that in humans is encoded by the ZNF208 gene.
Zinc Finger Protein 548 (ZNF548) is a human protein encoded by the ZNF548 gene which is located on chromosome 19. It is found in the nucleus and is hypothesized to play a role in the regulation of transcription by RNA Polymerase II. It belongs to the Krüppel C2H2-type zinc-finger protein family as it contains many zinc-finger repeats.