Related Experiment Video

Updated: Aug 9, 2025

Identification of Transcription Factor Regulators using Medium-Throughput Screening of Arrayed Libraries and a Dual-Luciferase-Based Reporter
11:32

Identification of Transcription Factor Regulators using Medium-Throughput Screening of Arrayed Libraries and a Dual-Luciferase-Based Reporter

Published on: March 27, 2020

7.0K

The Conserved Transcriptional Activation Activity Identified in Dual-Specificity

Xiuke Ouyang1, Zhuqing Wang1, Bingtong Wu1

  • 1Fang Zongxi Center, MoE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China.

Biomolecules
|February 25, 2023
PubMed

Insights

Dual-specificity tyrosine-(Y)-phosphorylation-regulated kinase 1 (DYRK1) has a novel function beyond its kinase activity. This protein kinase also acts as a transcription factor, regulating genes involved in neuronal function and intellectual disability.

Area of Science:

  • Molecular Biology
  • Neuroscience
  • Genetics

Background:

  • Dual-specificity tyrosine-(Y)-phosphorylation-regulated kinase 1 (DYRK1) is crucial for neuron development.
  • The non-kinase functions of DYRK1 are not well understood.

Purpose of the Study:

  • To investigate potential non-kinase functions of DYRK1.
  • To identify conserved functional domains and regulatory mechanisms of DYRK1.
  • To explore the role of DYRK1's transcriptional activity in neurodevelopmental disorders.

Main Methods:

  • Analysis of ascidian Ciona robusta DYRK1 (CrDYRK1) and human HsDYRK1A.
  • Assessment of transcriptional activation and repression activities.
  • Identification of target genes and DNA motifs using transcriptome data.
  • Examination of mutation sites associated with intellectual disability.

Main Results:

  • CrDYRK1 possesses C-terminal transcriptional activation activity independent of its kinase function.
  • N-terminal repression domain autoinhibits DYRK1's activation.
  • HsDYRK1A retains both activation and repression domains, regulating genes involved in ion transport and neuroactive ligand-receptor interactions.
  • Mutation sites for DYRK1A-related intellectual disability syndrome are located in the C-terminal domain.

Conclusions:

  • DYRK1 possesses a conserved transcription activation domain in urochordates and vertebrates.
  • This transcriptional activity is independent of kinase function and subject to autoinhibition.
  • DYRK1's transcriptional role is implicated in synaptic transmission and neuronal function relevant to intellectual disability.
Keywords:
DYRK1intellectual disability syndromeion transportneuronal functiontranscriptional activation

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