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Related Concept Videos

Transcription01:10

Transcription

154.1K
Overview
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
154.1K
Transcription01:17

Transcription

31.1K
Transcription is the synthesis of RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in correctly synthesizing messenger RNA (mRNA). Transcriptional regulation is responsible for the differentiation of different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds of RNA Molecules
In eukaryotes,...
31.1K
Determination01:51

Determination

20.4K
During embryogenesis, cells become progressively committed to different fates through a two-step process: specification followed by determination. Specification is demonstrated by removing a segment of an early embryo, “neutrally” culturing the tissue in vitro—for example, in a petri dish with simple medium—and then observing the derivatives. If the cultured region gives rise to cell types that it would normally generate in the embryo, this means that it is specified. In...
20.4K
Master Transcription Regulators02:23

Master Transcription Regulators

7.5K
Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a  complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
7.5K
Morphogenesis02:19

Morphogenesis

29.8K
Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.
29.8K
Notch Signaling Pathway03:14

Notch Signaling Pathway

5.9K
The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
5.9K

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Transcriptional Decoding of Morphogen Gradients during Development.

Gloria R Garcia1, Daniel R Larson1

  • 1Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA.

Developmental Cell
|September 29, 2020
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Summary
This summary is machine-generated.

Researchers visualized real-time gene expression in living organisms. They discovered that enhancers use frequency modulation to decode bone morphogenetic protein gradients during development.

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Area of Science:

  • Molecular Biology
  • Developmental Biology
  • Genetics

Background:

  • Real-time visualization of transcription in living organisms is crucial for understanding gene expression dynamics.
  • Gene expression studies in development have advanced significantly with new imaging techniques.

Purpose of the Study:

  • To investigate how bone morphogenetic protein (BMP) gradients are interpreted during embryonic development.
  • To explore the role of enhancers in decoding signaling gradients.

Main Methods:

  • Utilized live imaging techniques to visualize gene transcription in real time.
  • Employed genetic and molecular approaches to study enhancer function.

Main Results:

  • Demonstrated that enhancers encode information through frequency modulation.
  • Showed that this frequency modulation is key to decoding BMP gradients.

Conclusions:

  • Enhancers act as critical decoding elements for morphogen gradients.
  • Frequency modulation is a novel mechanism by which developmental signals are interpreted.